methylphenidate hydrochloride - Generic Medications

Methylphenidate hydrochloride tablets, USP contains methylphenidate hydrochloride, a CNS stimulant. It is available as tablets of 5 mg, 10 mg, and 20 mg strengths for oral administration. Methylphenidate hydrochloride is methyl α-phenyl-2-piperidineacetate hydrochloride, and its structural formula is: Methylphenidate hydrochloride USP is a white, odorless, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77 g/mol. Methylphenidate hydrochloride tablets, USP contains the following inactive ingredients: colloidal silicon dioxide, lactose anhydrous, magnesium stearate, and microcrystalline cellulose. Methylphenidate hydrochloride structural formula.

Methylphenidate hydrochloride tablets contain methylphenidate hydrochloride, a CNS stimulant. It is available as tablets of 5 mg, 10 mg, and 20 mg strengths for oral administration. Methylphenidate hydrochloride is methyl α-phenyl-2-piperidineacetate hydrochloride, and its structural formula is: Methylphenidate hydrochloride USP is a white, odorless, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77 g/mol. Methylphenidate hydrochloride tablets contain the following inactive ingredients: lactose monohydrate, silicified microcrystalline cellulose, sodium lauryl sulfate, magnesium stearate and D&C Yellow #10 (5 mg and 20 mg tablets).

Methylphenidate hydrochloride chewable tablets are a mild central nervous system (CNS) stimulant, available as 2.5 mg, 5 mg and 10 mg for oral administration. Methylphenidate hydrochloride is methyl α-phenyl-2-piperidineacetate hydrochloride, and its structural formula is Methylphenidate Hydrochloride C 14 H 19 NO 2 • HCl MW = 269.77 Methylphenidate hydrochloride USP is a white, odorless, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Each methylphenidate hydrochloride chewable tablet, for oral administration, contains 2.5 mg, 5 mg or 10 mg of methylphenidate hydrochloride USP. In addition, methylphenidate hydrochloride chewable tablets also contain the following inactive ingredients: aspartame, lactose anhydrous, microcrystalline cellulose, guar gum, grape flavor, pregelatinized starch, and stearic acid. structure

Methylphenidate hydrochloride tablets contain methylphenidate hydrochloride, a CNS stimulant. They are available as tablets of 5 mg, 10 mg, and 20 mg strengths for oral administration. Methylphenidate hydrochloride is methyl α-phenyl-2-piperidineacetate hydrochloride, and its structural formula is: Methylphenidate hydrochloride USP is a white, odorless, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77 g/mol. Methylphenidate hydrochloride tablets contain the following inactive ingredients: lactose monohydrate, magnesium stearate, microcrystalline cellulose, and talc. Note: Methylphenidate hydrochloride tablets are color-additive free. Chemical Structure

Methylphenidate HCl Extended-Release Tablets, USP are a central nervous system (CNS) stimulant. Methylphenidate HCl Extended-Release Tablets, USP are available in four tablet strengths. Each extended-release tablet for once-a-day oral administration contains 18, 27, 36, or 54 mg of methylphenidate HCl USP and is designed to have a 12-hour duration of effect. Chemically, methylphenidate HCl is d,l (racemic) methyl α-phenyl-2-piperidineacetate hydrochloride. Its empirical formula is C 14 H 19 NO 2 •HCl. Its structural formula is: Methylphenidate HCl USP is a white, odorless crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77. Methylphenidate HCl Extended-Release Tablets, USP also contains the following inert ingredients: carboxymethylcellulose sodium, colloidal silicon dioxide, corn starch, ethocel, hydroxypropyl cellulose, hypromellose, hypromellose acetate succinate, magnesium stearate, microcrystalline cellulose, polyethylene glycol, sucrose, talc, titanium dioxide and triethyl citrate. The 18, 36, and 54 mg tablets also contain synthetic red iron oxide. The 27 mg tablets also contain yellow iron oxide. Methylphenidate HCl Extended-Release Tablets meet USP Dissolution Test 3. Chemical Structure 11.1 System Components and Performance Methylphenidate HCl Extended-Release Tablets uses extended-release bead technology to deliver methylphenidate HCl at a controlled rate. The system, which resembles a conventional tablet in appearance, is comprised of a tablet core containing the extended-release beads and the core is covered with an immediate-release drug overcoat. In an aqueous environment, such as the gastrointestinal tract, the drug overcoat dissolves within one hour, providing an initial dose of methylphenidate. The tablet disintegrates and then polymer coatings on the beads control the release of methylphenidate HCl over the 12 hour dosing period.

Methylphenidate hydrochloride extended-release tablets, USP is a central nervous system (CNS) stimulant. Methylphenidate hydrochloride extended-release tablets are available in four tablet strengths. Each extended-release tablet for once-a-day oral administration contains 18, 27, 36, or 54 mg of methylphenidate HCl USP and is designed to have a 12-hour duration of effect. Chemically, methylphenidate HCl is d, l (racemic) methyl α-phenyl-2-piperidineacetate hydrochloride. Its empirical formula is C 14 H 19 NO 2 •HCl. Its structural formula is: Methylphenidate HCl USP is a white to off-white crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77. Methylphenidate hydrochloride extended-release tablets, USP also contains the following inert ingredients and are common to all strengths: butylated hydroxytoluene, cellulose acetate, hypromellose, phosphoric acid, polyethylene glycol, polyethylene oxides, povidone, propylene glycol, sodium chloride, stearic acid, succinic acid, ferric oxide yellow, FD&C Red No 40 and titanium dioxide. The 18 mg tablet strength also contains iron oxide yellow and Polysorbate 80. The 27 mg tablet strength also contains iron oxide red. The 36 mg tablet strength also contains talc. The 54 mg tablet strength also contains iron oxide yellow, iron oxide red and talc. Each tablet strength also contains black iron oxide, hypromellose and propylene glycol as imprinting ink. USP Dissolution Test Pending. Structural Formula 11.1 System Components and Performance Methylphenidate hydrochloride extended-release tablets uses osmotic pressure to deliver methylphenidate HCl at a controlled rate. The system, which resembles a conventional tablet in appearance, comprises an osmotically active trilayer core surrounded by a semipermeable membrane with an immediate-release drug overcoat. The trilayer core is composed of two drug layers containing the drug and excipients, and a push layer containing osmotically active components. There is a precision-laser drilled orifice on the drug-layer end of the tablet. In an aqueous environment, such as the gastrointestinal tract, the drug overcoat dissolves within one hour, providing an initial dose of methylphenidate. Water permeates through the membrane into the tablet core. As the osmotically active polymer excipients expand, methylphenidate is released through the orifice. The membrane controls the rate at which water enters the tablet core, which in turn controls drug delivery. Furthermore, the drug release rate from the system increases with time over a period of 6 to 7 hours due to the drug-concentration gradient incorporated into the two drug layers of methylphenidate hydrochloride extended-release tablets. The biologically inert components of the tablet remain intact during gastrointestinal transit and are eliminated in the stool as a tablet shell along with insoluble core components. It is possible that methylphenidate hydrochloride extended-release tablets may be visible on abdominal x-rays under certain circumstances, especially when digital enhancing techniques are utilized.

Methylphenidate HCl Oral Solution is a mild central nervous system (CNS) stimulant available as 5 mg/5 mL and 10 mg/5 mL oral solutions for oral administration. Methylphenidate hydrochloride is methyl α-phenyl-2-piperidineacetate hydrochloride, and its structural formula is Methylphenidate hydrochloride USP is a white, odorless, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Each mL of Methylphenidate HCl Oral Solution 5 mg/5 mL contains 1 mg of methylphenidate hydrochloride USP. Each mL of Methylphenidate HCl Oral Solution 10 mg/5 mL contains 2 mg of methylphenidate hydrochloride USP. In addition, Methylphenidate HCl Oral Solution also contains the following inactive ingredients: diluted hydrochloric acid, glycerin, natural & artificial grape flavor, Polyethylene Glycol 1450 and purified water. image description

Methylphenidate hydrochloride tablets contain methylphenidate hydrochloride, a CNS stimulant. It is available as tablets of 5 mg, 10 mg, and 20 mg strengths for oral administration. Methylphenidate hydrochloride is methyl α-phenyl-2-piperidineacetate hydrochloride, and its structural formula is: Methylphenidate hydrochloride USP is a white, odorless, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77 g/mol. Methylphenidate hydrochloride tablets contain the following inactive ingredients: lactose monohydrate, silicified microcrystalline cellulose, sodium lauryl sulfate, magnesium stearate and D&C Yellow #10 (5 mg and 20 mg tablets).

Methylphenidate hydrochloride extended-release tablets, USP are a central nervous system (CNS) stimulant. Methylphenidate hydrochloride extended-release tablets are available in one tablet strength. Each extended-release tablet for once-a-day oral administration contains 72 mg of methylphenidate HCl, USP and is designed to have a 12-hour duration of effect. Chemically, methylphenidate HCl is d,l (racemic) methyl α-phenyl-2-piperidineacetate hydrochloride. Its molecular formula is C 14 H 19 NO 2 •HCl. Its structural formula is: Methylphenidate HCl, USP is a white, odorless crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77. Methylphenidate hydrochloride extended-release tablets, USP contain the following inactive ingredients: cellulose acetate, colloidal silicon dioxide, FD&C Blue No. 1, FD&C Red No. 40 Aluminum Lake, hypromellose, lactose monohydrate, phosphoric acid, polyethylene glycol, polyethylene oxide, povidone, sodium chloride, stearic acid, succinic acid, talc, titanium dioxide and triacetin. The printing ink also contains: black iron oxide, and shellac glaze. This product meets USP dissolution test 2. Structure 11.1 System Components and Performance Methylphenidate hydrochloride extended-release tablets uses osmotic pressure to deliver methylphenidate HCl at a controlled rate. The system, which resembles a conventional tablet in appearance, comprises an osmotically active bilayer core surrounded by a semipermeable membrane with an immediate-release drug overcoat. The bilayer core is composed of a drug layer containing the drug and excipients, and a push layer containing osmotically active components. There is a precision-laser drilled orifice on the drug-layer end of the tablet. In an aqueous environment, such as the gastrointestinal tract, the drug overcoat dissolves within one hour, providing an initial dose of methylphenidate. Water permeates through the membrane into the tablet core. As the osmotically active polymer excipients expand, methylphenidate is released through the orifice. The membrane controls the rate at which water enters the tablet core, which in turn controls drug delivery. Furthermore, the drug release rate from the system increases with time over a period of 6 to 7 hours due to the drug-concentration gradient incorporated into the drug layer of core of methylphenidate hydrochloride extended-release tablets. The biologically inert components of the tablet remain intact during gastrointestinal transit and are eliminated in the stool as a tablet shell along with insoluble core components. It is possible that methylphenidate hydrochloride extended-release tablets may be visible on abdominal x-rays under certain circumstances, especially when digital enhancing techniques are utilized.

Methylphenidate hydrochloride tablets contain methylphenidate hydrochloride, USP a CNS stimulant. It is available as tablets of 5 mg, 10 mg, and 20 mg strengths for oral administration. Methylphenidate hydrochloride is methyl α-phenyl-2-piperidineacetate hydrochloride, and its structural formula is: Methylphenidate hydrochloride, USP is a white, odorless, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77 g/mol. Each tablet contains 5 mg, 10 mg, or 20 mg of methylphenidate hydrochloride, USP. Inactive ingredients include: lactose monohydrate, magnesium stearate, polyethylene glycol 8000, and talc. In addition, the 5 mg tablet contains FD&C blue No. 2 aluminum lake and FD&C red No. 40 aluminum lake, the 10 mg tablet contains FD&C blue No. 2 aluminum lake and D&C yellow No. 10 aluminum lake and the 20 mg tablet contains FD&C yellow No. 6 aluminum lake.

Methylphenidate hydrochloride extended-release capsules contain methylphenidate hydrochloride, a central nervous system (CNS) stimulant. Methylphenidate hydrochloride extended-release capsules contain multi layered beads, which are composed of an immediate-release layer which contains approximately 40% of the methylphenidate dose, and a controlled release layer which contains approximately 60% of the methylphenidate dose. Methylphenidate hydrochloride extended-release capsules are available in seven capsule strengths. Each extended-release capsule for once-a-day oral administration contains 10 mg, 15 mg, 20 mg, 30 mg, 40 mg, 50 mg, or 60 mg of methylphenidate HCl USP, which is equivalent to 8.6 mg, 13.0 mg, 17.3 mg, 25.9 mg, 34.6 mg, 43.2 mg, or 51.9 mg of methylphenidate free base, respectively. Chemically, methylphenidate HCl is d,l (racemic) methyl α-phenyl-2-piperidineacetate hydrochloride. Its molecular formula is C 14 H 19 NO 2 ∙HCl. Its structural formula is: Methylphenidate hydrochloride USP is a white to off-white, odorless, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77. Inactive Ingredients: ammonio methacrylate copolymer, type B; colloidal silicon dioxide (added if necessary); gelatin; hypromelloses; methacrylic acid copolymer, type C; polyethylene glycol; sugar spheres; talc; titanium oxide; and triethyl citrate. Each strength capsule also contains colorant ingredients in the capsule shell as follows: 10 mg: FD&C Blue No. 1 15 mg: D&C Red No. 28, D&C Yellow No. 10, FD&C Red No. 40 20 mg: D&C Red No. 33, D&C Yellow No. 10 30 mg: FD&C Blue No. 1, FD&C Red No. 3 40 mg: D&C Red No. 28, FD&C Blue No. 1, FD&C Red No. 40 50 mg: D&C Yellow No. 10, FD&C Green No. 3 60 mg: Black Iron Oxide Chemical Structure

Methylphenidate hydrochloride is a mild central nervous system (CNS) stimulant, available as 2.5 mg, 5 mg and 10 mg chewable tablets for oral administration. Methylphenidate hydrochloride is methyl α-phenyl-2-piperidineacetate hydrochloride, and its structural formula is Methylphenidate hydrochloride USP is a white to off-white powder. Its solutions are acid to litmus. It is soluble in water, alcohol, and chloroform. Each methylphenidate hydrochloride chewable tablet, for oral administration, contains 2.5 mg, 5 mg or 10 mg of methylphenidate hydrochloride USP. In addition, methylphenidate hydrochloride chewable tablets also contain the following inactive ingredients: aspartame, maltose, microcrystalline cellulose, grape flavor, pregelatinized starch, phosphoric acid, and stearic acid. Chemical Structure

Methylphenidate hydrochloride extended-release tablets, USP is a central nervous system (CNS) stimulant. Methylphenidate hydrochloride extended-release tablets are available in four tablet strengths. Each extended-release tablet for once-a-day oral administration contains 18, 27, 36, or 54 mg of methylphenidate HCl USP and is designed to have a 12-hour duration of effect. Chemically, methylphenidate HCl is d, l (racemic) methyl α-phenyl-2-piperidineacetate hydrochloride. Its empirical formula is C 14 H 19 NO 2 ·HCl. Its structural formula is: Methylphenidate HCl USP is a white to off-white crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77. Methylphenidate hydrochloride extended-release tablets, USP also contains the following inert ingredients and are common to all strengths: butylated hydroxytoluene, cellulose acetate, hypromellose, phosphoric acid, polyethylene glycol, polyethylene oxides, povidone, propylene glycol, sodium chloride, stearic acid, succinic acid, ferric oxide yellow, FD&C Red No 40 and titanium dioxide. The 18 mg tablet strength also contains iron oxide yellow and Polysorbate 80. The 27 mg tablet strength also contains iron oxide red. The 36 mg tablet strength also contains talc. The 54 mg tablet strength also contains iron oxide yellow, iron oxide red and talc. Each tablet strength also contains black iron oxide, hypromellose and propylene glycol as imprinting ink. USP Dissolution Test Pending. Structure 11.1 System Components and Performance Methylphenidate hydrochloride extended-release tablets uses osmotic pressure to deliver methylphenidate HCl at a controlled rate. The system, which resembles a conventional tablet in appearance, comprises an osmotically active trilayer core surrounded by a semipermeable membrane with an immediate-release drug overcoat. The trilayer core is composed of two drug layers containing the drug and excipients, and a push layer containing osmotically active components. There is a precision-laser drilled orifice on the drug-layer end of the tablet. In an aqueous environment, such as the gastrointestinal tract, the drug overcoat dissolves within one hour, providing an initial dose of methylphenidate. Water permeates through the membrane into the tablet core. As the osmotically active polymer excipients expand, methylphenidate is released through the orifice. The membrane controls the rate at which water enters the tablet core, which in turn controls drug delivery. Furthermore, the drug release rate from the system increases with time over a period of 6 to 7 hours due to the drug-concentration gradient incorporated into the two drug layers of methylphenidate hydrochloride extended-release tablets. The biologically inert components of the tablet remain intact during gastrointestinal transit and are eliminated in the stool as a tablet shell along with insoluble core components. It is possible that methylphenidate hydrochloride extended-release tablets may be visible on abdominal x-rays under certain circumstances, especially when digital enhancing techniques are utilized.

Methylphenidate hydrochloride tablets, USP is a CNS stimulant. It is available as tablets of 5 mg, 10 mg, and 20 mg strength for oral administration. Methylphenidate hydrochloride is methyl α-phenyl-2-piperidineacetate hydrochloride, and its structural formula is: Methylphenidate hydrochloride USP is a white to off white, odorless, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77 g/mol. Methylphenidate hydrochloride tablets, USP contain the following inactive ingredients: compressible sugar, colloidal silicon dioxide, D&C yellow no. 10 (5 mg and 20 mg tablets), lactose monohydrate, magnesium stearate, and microcrystalline cellulose. image description

Methylphenidate hydrochloride tablets contain methylphenidate hydrochloride, a CNS stimulant. It is available as tablets of 5 mg, 10 mg, and 20 mg strengths for oral administration. Methylphenidate hydrochloride is methyl α-phenyl-2-piperidineacetate hydrochloride, and its structural formula is: Methylphenidate hydrochloride USP is a white, odorless, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77 g/mol. Methylphenidate hydrochloride tablets contain the following inactive ingredients: lactose monohydrate, silicified microcrystalline cellulose, sodium lauryl sulfate, magnesium stearate and D&C Yellow #10 (5 mg and 20 mg tablets). structure.jpg

Methylphenidate hydrochloride chewable tablets are a mild central nervous system (CNS) stimulant, available as 2.5 mg, 5 mg and 10 mg for oral administration. Methylphenidate hydrochloride is methyl α-phenyl-2-piperidineacetate hydrochloride, and its structural formula is Methylphenidate Hydrochloride C 14 H 19 NO 2 • HCl MW = 269.77 Methylphenidate hydrochloride USP is a white, odorless, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Each methylphenidate hydrochloride chewable tablet, for oral administration, contains 2.5 mg, 5 mg or 10 mg of methylphenidate hydrochloride USP. In addition, methylphenidate hydrochloride chewable tablets also contain the following inactive ingredients: aspartame, lactose anhydrous, microcrystalline cellulose, guar gum, grape flavor, pregelatinized starch, and stearic acid. structure

Methylphenidate hydrochloride oral solution contains methylphenidate hydrochloride a CNS stimulant. It is available as an oral solution in 5 mg/5 mL and 10 mg/5 mL strengths for oral administration. Chemically, methylphenidate hydrochloride is ( d,l (racemic) methyl α-phenyl-2-piperidineacetate hydrochloride and its structural formula is: Methylphenidate hydrochloride USP is a white to off white, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Each mL of methylphenidate hydrochloride oral solution 5 mg/5 mL contains 1 mg of methylphenidate hydrochloride USP. Each mL of methylphenidate hydrochloride oral solution 10 mg/5 mL contains 2 mg of methylphenidate hydrochloride USP. Methylphenidate hydrochloride oral solution also contains the following inactive ingredients: glycerin, polyethylene glycol 1450, concord grape flavor N&A, diluted hydrochloric acid (10%), and purified water.

Methylphenidate hydrochloride oral solution is a mild central nervous system (CNS) stimulant available as 5 mg/5 mL and 10 mg/5 mL oral solutions for oral administration. Methylphenidate hydrochloride is methyl α-phenyl-2-piperidineacetate hydrochloride, and its structural formula is Methylphenidate hydrochloride USP is a white to off white, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Each mL of methylphenidate hydrochloride oral solution 5 mg/5 mL contains 1 mg of methylphenidate hydrochloride USP. Each mL of methylphenidate hydrochloride oral solution 10 mg/5 mL contains 2 mg of methylphenidate hydrochloride USP. In addition, methylphenidate hydrochloride oral solution also contains the following inactive ingredients: glycerin,polyethylene glycol 1450, concord grape flavor N&A, diluted hydrochloric acid (10%), and purified water.

Methylphenidate HCl Extended-Release Tablets, USP are a central nervous system (CNS) stimulant. Methylphenidate HCl Extended-Release Tablets, USP are available in four tablet strengths. Each extended-release tablet for once-a-day oral administration contains 18, 27, 36, or 54 mg of methylphenidate HCl USP and is designed to have a 12-hour duration of effect. Chemically, methylphenidate HCl is d,l (racemic) methyl α-phenyl-2-piperidineacetate hydrochloride. Its empirical formula is C 14 H 19 NO 2 •HCl. Its structural formula is: Methylphenidate HCl USP is a white, odorless crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77. Methylphenidate HCl Extended-Release Tablets, USP also contains the following inert ingredients: carboxymethylcellulose sodium, colloidal silicon dioxide, corn starch, ethocel, hydroxypropyl cellulose, hypromellose, hypromellose acetate succinate, magnesium stearate, microcrystalline cellulose, polyethylene glycol, sucrose, talc, titanium dioxide and triethyl citrate. The 18, 36, and 54 mg tablets also contain synthetic red iron oxide. The 27 mg tablets also contain yellow iron oxide. Methylphenidate HCl Extended-Release Tablets meet USP Dissolution Test 3. 11.1 System Components and Performance Methylphenidate HCl Extended-Release Tablets uses extended-release bead technology to deliver methylphenidate HCl at a controlled rate. The system, which resembles a conventional tablet in appearance, is comprised of a tablet core containing the extended-release beads and the core is covered with an immediate-release drug overcoat. In an aqueous environment, such as the gastrointestinal tract, the drug overcoat dissolves within one hour, providing an initial dose of methylphenidate. The tablet disintegrates and then polymer coatings on the beads control the release of methylphenidate HCl over the 12 hour dosing period.

Methylphenidate hydrochloride tablets contains methylphenidate hydrochloride, a CNS stimulant. It is available as tablets of 5mg, 10 mg and 20 mg strength for oral administration. Methylphenidate hydrochloride is methyl α-phenyl-2-piperidineacetate hydrochloride, and its structural formula is: Methylphenidate hydrochloride USP is a white, odorless, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77 g/mol. Methylphenidate hydrochloride tablets contains the following inactive ingredients: corn starch, D&C Yellow # 10, lactose monohydrate, magnesium stearate, talc, and FD&C Blue #1 (10mg tablets). chemical-structure-methylphenidate

Methylphenidate hydrochloride extended-release capsules contain methylphenidate hydrochloride, USP a central nervous system (CNS) stimulant. Methylphenidate hydrochloride extended-release capsules contain multi layered beads, which are composed of an immediate-release layer which contains approximately 40% of the methylphenidate dose, and a controlled release layer which contains approximately 60% of the methylphenidate dose. Methylphenidate hydrochloride extended-release capsules are available in seven capsule strengths. Each extended-release capsule for once-a-day oral administration contains 10 mg, 15 mg, 20 mg, 30 mg, 40 mg, 50 mg, or 60 mg of methylphenidate hydrochloride USP, which is equivalent to 8.6 mg, 13.0 mg, 17.3 mg, 25.9 mg, 34.6 mg, 43.2 mg, or 51.9 mg of methylphenidate free base, respectively. Chemically, methylphenidate hydrochloride, USP is d,l (racemic) methyl α-phenyl-2­piperidineacetate hydrochloride. Its structural formula is: C 14 H 19 NO 2 •HCl M.W. 269.77 Methylphenidate hydrochloride, USP is a white to off-white, odorless, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Inactive Ingredients: ammonio methacrylate copolymer type B, fumaric acid, gelatin, hypromellose 2910, methacrylic acid copolymer type A, polyethylene glycol 400, polyethylene glycol 8000, sugar spheres (which contains sucrose and corn starch), talc, titanium dioxide and triethyl citrate. The 10 mg capsules also contain FD&C Blue #1. The 15 mg capsules also contain FD&C Yellow #6. The 20 mg capsules also contain black iron oxide. The 30 mg capsules also contain FD&C Blue#1 and FD&C Red #3. The 40 mg capsules also contain yellow iron oxide. The 50 mg capsules also contain FD&C Blue #1 and yellow iron oxide. The 60 mg capsules also contain FD&C Blue #1 and FD&C Red #40. Black printing ink SW-9008/SW-9009 contains black iron oxide, potassium hydroxide, propylene glycol, shellac, and strong ammonia solution. 1

Methylphenidate HCl is a mild central nervous system (CNS) stimulant, available as 2.5 mg, 5 mg and 10 mg chewable tablets for oral administration. Methylphenidate hydrochloride is methyl α-phenyl-2-piperidineacetate hydrochloride, and its structural formula is Methylphenidate Hydrochloride C 14 H 19 NO 2 • HCl MW = 269.77 Methylphenidate hydrochloride USP is a white, odorless, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Each methylphenidate hydrochloride chewable tablet, for oral administration, contains 2.5 mg, 5 mg or 10 mg of methylphenidate hydrochloride USP. In addition, methylphenidate hydrochloride chewable tablets also contain the following inactive ingredients: aspartame, lactose anhydrous, microcrystalline cellulose, guar gum, grape flavor, pregelatinized starch, and stearic acid.

Methylphenidate hydrochloride tablets, USP is a CNS stimulant. It is available as tablets of 5 mg, 10 mg, and 20 mg strength for oral administration. Methylphenidate hydrochloride is methyl α-phenyl-2-piperidineacetate hydrochloride, and its structural formula is: Methylphenidate hydrochloride USP is a white to off white, odorless, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77 g/mol. Methylphenidate hydrochloride tablets, USP contain the following inactive ingredients: compressible sugar, colloidal silicon dioxide, D&C yellow no. 10 (5 mg and 20 mg tablets), lactose monohydrate, magnesium stearate, and microcrystalline cellulose.

Methylphenidate HCl Extended-Release Tablets, USP are a central nervous system (CNS) stimulant. Methylphenidate HCl Extended-Release Tablets, USP are available in four tablet strengths. Each extended-release tablet for once-a-day oral administration contains 18, 27, 36, or 54 mg of methylphenidate HCl USP and is designed to have a 12-hour duration of effect. Chemically, methylphenidate HCl is d,l (racemic) methyl α-phenyl-2-piperidineacetate hydrochloride. Its empirical formula is C 14 H 19 NO 2 •HCl. Its structural formula is: Methylphenidate HCl USP is a white, odorless crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77. Methylphenidate HCl Extended-Release Tablets, USP also contains the following inert ingredients: carboxymethylcellulose sodium, colloidal silicon dioxide, corn starch, ethocel, hydroxypropyl cellulose, hypromellose, hypromellose acetate succinate, magnesium stearate, microcrystalline cellulose, polyethylene glycol, sucrose, talc, titanium dioxide and triethyl citrate. The 18, 36, and 54 mg tablets also contain synthetic red iron oxide. The 27 mg tablets also contain yellow iron oxide. Methylphenidate HCl Extended-Release Tablets meet USP Dissolution Test 3. 11.1 System Components and Performance Methylphenidate HCl Extended-Release Tablets uses extended-release bead technology to deliver methylphenidate HCl at a controlled rate. The system, which resembles a conventional tablet in appearance, is comprised of a tablet core containing the extended-release beads and the core is covered with an immediate-release drug overcoat. In an aqueous environment, such as the gastrointestinal tract, the drug overcoat dissolves within one hour, providing an initial dose of methylphenidate. The tablet disintegrates and then polymer coatings on the beads control the release of methylphenidate HCl over the 12 hour dosing period.

Methylphenidate hydrochloride tablets contain methylphenidate hydrochloride, a CNS stimulant. It is available as tablets of 5 mg, 10 mg, and 20 mg strengths for oral administration. Methylphenidate hydrochloride is methyl α-phenyl-2-piperidineacetate hydrochloride, and its structural formula is: Methylphenidate hydrochloride USP is a white, odorless, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77 g/mol. Methylphenidate hydrochloride tablets contain the following inactive ingredients: lactose monohydrate, silicified microcrystalline cellulose, sodium lauryl sulfate, magnesium stearate and D&C Yellow #10 (5 mg and 20 mg tablets).

Methylphenidate hydrochloride oral solution is a CNS stimulant available as 5 mg/5 mL and 10 mg/5 mL strengths for oral administration. Chemically, Methylphenidate hydrochloride is ( d,l racemic) methyl α-phenyl-2-piperidineacetate hydrochloride, and its structural formula is: Methylphenidate hydrochloride, USP is a white, odorless, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Each mL of methylphenidate hydrochloride oral solution 5 mg/5 mL contains 1 mg of methylphenidate hydrochloride, USP. Each mL of methylphenidate hydrochloride oral solution 10 mg/5 mL contains 2 mg of methylphenidate hydrochloride, USP. In addition, methylphenidate hydrochloride oral solution also contains the following inactive ingredients: artificial grape flavor, glycerin, hydrochloric acid, polyethylene glycol 1450, and purified water. methylphenidatestructure

Methylphenidate hydrochloride extended-release tablets, USP are a central nervous system (CNS) stimulant. Methylphenidate hydrochloride extended-release tablets, USP are available in five tablet strengths. Each extended-release tablet for once-a-day oral administration contains 18, 27, 36, 54, or 72 mg of methylphenidate HCl USP and is designed to have a 12-hour duration of effect. Chemically, methylphenidate HCl is d,l (racemic) methyl α-phenyl-2-piperidineacetate hydrochloride. Its empirical formula is C 14 H 19 NO 2 •HCl. Its structural formula is: Methylphenidate HCl USP is a white, odorless crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77. Methylphenidate hydrochloride extended-release tablets, USP also contain the following inactive ingredients: black iron oxide, cellulose acetate, colloidal silicon dioxide, ferrosoferric oxide, hypromellose, lactose monohydrate, magnesium stearate, phosphoric acid, polyethylene glycol, polyethylene oxide, sodium chloride, succinic acid, titanium dioxide, triacetin. In addition, 18 mg tablets contain: iron oxide red, iron oxide yellow 27 mg tablets contain: FD&C Yellow #6 Aluminum Lake, FD&C Blue #2 Aluminum Lake, FD&C Red #40 Aluminum Lake 54 mg tablets contain: FD&C Yellow #6 Aluminum Lake, FD&C Red #40 Aluminum Lake, FD&C Blue #2 Aluminum Lake 72 mg tablets contain: FD&C Blue #1 Aluminum Lake FDA approved dissolution test specifications differ from USP structural formula 11.1 System Components and Performance Methylphenidate hydrochloride extended-release tablets use osmotic pressure to deliver methylphenidate HCl at a controlled rate. The system, which resembles a conventional tablet in appearance, comprises an osmotically active bilayer core surrounded by a semipermeable membrane with an immediate-release drug overcoat. The bilayer core is composed of a drug layer containing the drug and excipients, and a push layer containing osmotically active components. There is a precision-laser drilled orifice on the drug-layer end of the tablet. In an aqueous environment, such as the gastrointestinal tract, the drug overcoat dissolves within one hour, providing an initial dose of methylphenidate. Water permeates through the membrane into the tablet core. As the osmotically active polymer excipients expand, methylphenidate is released through the orifice. The membrane controls the rate at which water enters the tablet core, which in turn controls drug delivery. Furthermore, the drug release rate from the system increases with time over a period of 6 to 7 hours due to the drug-concentration gradient incorporated into the drug layer of core of methylphenidate hydrochloride extended-release tablets. The biologically inert components of the tablet remain intact during gastrointestinal transit and are eliminated in the stool as a tablet shell along with insoluble core components. It is possible that methylphenidate hydrochloride extended-release tablets may be visible on abdominal x-rays under certain circumstances, especially when digital enhancing techniques are utilized.

Methylphenidate hydrochloride extended-release tablets, USP contains methylphenidate hydrochloride a CNS stimulant. It is available as extended-release tablets of 10 mg and 20 mg strength for oral administration. Methylphenidate hydrochloride is methyl α-phenyl-2-piperidineacetate hydrochloride, and its structural formula is: Methylphenidate hydrochloride USP is a white, odorless, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77 g/mol. Methylphenidate hydrochloride extended-release tablets, USP contains the following inactive ingredients: hypromellose, microcrystalline cellulose, lactose monohydrate, colloidal silicon dioxide and magnesium stearate. FDA approved dissolution test differs from the USP dissolution test. methyl-ER-tabs-str

Methylphenidate HCl Extended-Release Capsules CD contains methylphenidate hydrochloride, a CNS stimulant. The extended-release capsules comprise both immediate-release (IR) and extended-release (ER) beads such that 30% of the dose is provided by the IR component and 70% of the dose is provided by the ER component. Methylphenidate HCl Extended-Release Capsules CD is available in six capsule strengths containing 10 mg (3 mg IR; 7 mg ER), 20 mg (6 mg IR; 14 mg ER), 30 mg (9 mg IR; 21 mg ER), 40 mg (12 mg IR; 28 mg ER), 50 mg (15 mg IR; 35 mg ER), or 60 mg (18 mg IR; 42 mg ER) of methylphenidate hydrochloride for oral administration. Chemically, methylphenidate HCl is d , l (racemic)- threo -methyl α-phenyl-2-piperidineacetate hydrochloride. Its empirical formula is C 14 H 19 NO 2 •HCl. Its structural formula is: Methylphenidate HCl USP is a white, odorless, crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77. Methylphenidate HCl Extended-Release Capsules CD also contains the following inactive ingredients: Dibutyl sebacate, ethylcellulose aqueous dispersion, gelatin, hydroxypropylmethylcellulose, polyethylene glycol, povidone, sugar spheres, and titanium dioxide. The individual capsules contain the following color agents: 10 mg capsules: FD&C Blue No. 2, FDA/E172 Yellow Iron Oxide 20 mg capsules: FD&C Blue No. 2 30 mg capsules: FD&C Blue No. 2, FDA/E172 Red Iron Oxide 40 mg capsules: FDA/E172 Yellow Iron Oxide 50 mg capsules: FD&C Blue No. 2, FDA/E172 Red Iron Oxide formula

Methylphenidate hydrochloride extended-release tablet contains methylphenidate hydrochloride, a CNS stimulant. It is available as extended-release tablets of 10 mg and 20 mg strength for oral administration. Methylphenidate hydrochloride is methyl α-phenyl-2-piperidineacetate hydrochloride, and its structural formula is: Methylphenidate hydrochloride USP is a white, odorless, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77 g/mol. Methylphenidate hydrochloride extended-release tablet contains the following inactive ingredients: hydroxypropyl methylcellulose, magnesium stearate, microcrystalline cellulose, and talc. chemical structure

Methylphenidate HCl extended-release capsules contain methylphenidate hydrochloride, a CNS stimulant. The extended-release capsules comprise both immediate-release (IR) and extended-release (ER) beads such that 30% of the dose is provided by the IR component and 70% of the dose is provided by the ER component. Methylphenidate HCl extended-release capsules are available in six capsule strengths containing 10 mg (3 mg IR; 7 mg ER), 20 mg (6 mg IR; 14 mg ER), 30 mg (9 mg IR; 21 mg ER), 40 mg (12 mg IR; 28 mg ER), 50 mg (15 mg IR; 35 mg ER), or 60 mg (18 mg IR; 42 mg ER) of methylphenidate hydrochloride for oral administration. Chemically, methylphenidate HCl is d , l (racemic)- threo -methyl α-phenyl-2-piperidineacetate hydrochloride. Its empirical formula is C 14 H 19 NO 2 •HCl. Its structural formula is: Methylphenidate HCl USP is a white, odorless, crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77. Methylphenidate HCl extended-release capsules also contain the following inactive ingredients: Sugar Spheres, Ethylcellulose, Oleic Acid, Medium-Chain Triglycerides, Titanium Dioxide, Gelatin, Shellac, Propylene Glycol, Hypromellose, Polyethylene Glycol, and Black Iron Oxide. The individual capsules contain the following color agents: 10 mg capsules: FD&C Blue No. 2, Yellow Iron Oxide, Sodium Hydroxide, Povidone 20 mg capsules: FD&C Blue No. 2, Sodium Hydroxide, Povidone 30 mg capsules: FD&C Blue No. 1, FD&C Red No. 40, FD&C Yellow No. 6, Sodium Hydroxide, Povidone 40 mg capsules: Yellow Iron Oxide 50 mg capsules: FD&C Blue No. 2, Red Iron Oxide, Sodium Hydroxide, Povidone Chemical Structure

Methylphenidate Hydrochloride Extended-Release Tablets USP are a central nervous system (CNS) stimulant. Methylphenidate hydrochloride extended-release tablets are available in four tablet strengths. Each extended-release tablet for once-a-day oral administration contains 27, 36, or 54 mg of methylphenidate HCl USP and is designed to have a 12-hour duration of effect. Chemically, methylphenidate HCl is d,l (racemic) methyl α-phenyl-2-piperidineacetate hydrochloride. Its structural formula is: Methylphenidate HCl USP is a white, odorless crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Methylphenidate hydrochloride extended-release tablets also contain the following inert ingredients: silicified microcrystalline cellulose, ethylcellulose, hydroxypropyl cellulose, hypromellose, magnesium stearate, medium-chain triglycerides, oleic acid, polyethylene glycol, polyvinyl alcohol, propylene glycol, talc, titanium dioxide, triacetin, shellac. Each tablet also contains the following additional inert ingredients: 27 mg : yellow iron oxide, red iron oxide, black iron oxide; 36 mg : red iron oxide, black iron oxide; 54 mg : red iron oxide, black iron oxide. Chemical Structure 11.1 System Components and Performance Methylphenidate hydrochloride extended-release tablets use a precisely designed diffusion process to deliver methylphenidate hydrochloride at a controlled rate. The system comprises a polymeric core surrounded by a diffusion controlling membrane with an immediate release drug overcoat. In an aqueous environment, such as the gastrointestinal tract, the drug overcoat dissolves within one hour, providing an initial dose of methylphenidate. Water enters the tablet core through the diffusion controlling membrane, and methylphenidate is released in a controlled fashion resulting in C max at 6 to 7 hours. The non-absorbed components of the tablet pass through the gastrointestinal tract and are eliminated in the stool. It is possible that methylphenidate hydrochloride extended-release tablets may be visible on abdominal x-rays under certain circumstances, especially when digital enhancing techniques are utilized. Meets USP Dissolution Test 4.

Methylphenidate hydrochloride extended-release capsules (LA) contains methylphenidate hydrochloride USP, a CNS stimulant. Methylphenidate hydrochloride extended-release capsules (LA) is an extended-release formulation of methylphenidate for oral administration with a bi-modal release profile. Each bead-filled methylphenidate hydrochloride extended-release capsule (LA) contains half the dose as immediate-release beads and half as enteric-coated beads, thus providing an immediate release of methylphenidate and a second delayed release of methylphenidate. The active substance in methylphenidate hydrochloride extended-release capsules (LA) is methyl α-phenyl-2-piperidineacetate hydrochloride, and its structural formula is Methylphenidate hydrochloride USP is a white, odorless, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77 g/mol. Inactive ingredients: Sugar spheres (which contain sucrose and starch (corn)), hypromellose, cellulose acetate butyrate, hypromellose acetate succinate, acetyltributyl citrate, acetone, talc, and purified water. Opaque gelatin capsules contain: titanium dioxide and gelatin. The 10mg capsule contains FD&C Green#3, FD&C#40, and FD&C Yellow #6. The 30 and 40 mg capsules contain D&C Red #28 and FD&C Blue #1. The 60 mg capsules contain iron oxide yellow and sodium lauryl sulfate. The capsules are imprinted with black ink which contains black iron oxide, shellac and potassium hydroxide. The 60 mg black imprinting ink also contains ammonium hydroxide and propylene glycol. Chemical Structure

Methylphenidate Hydrochloride Extended-Release Capsules contain methylphenidate hydrochloride, USP, a CNS stimulant. Methylphenidate Hydrochloride Extended-Release Capsules are an extended-release formulation of methylphenidate for oral administration with a bi-modal release profile. Each Methylphenidate Hydrochloride Extended-Release Capsule contains pellets, with half the dose as immediate-release and half as delayed-release, thus providing an immediate release of methylphenidate and a second delayed release of methylphenidate. The active substance in Methylphenidate Hydrochloride Extended-Release Capsules is methyl α-phenyl-2-piperidineacetate hydrochloride. Its structural formula is as follows: M.W. 269.77 Methylphenidate hydrochloride, USP is a white, odorless, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Each capsule, for oral administration, has the following inactive ingredients: ammonio methacrylate copolymer, black iron oxide, D&C Yellow #10 Aluminum Lake, FD&C Blue #1 Aluminum Lake, FD&C Blue #2 Aluminum Lake, FD&C Red #40 Aluminum Lake, gelatin, hypromellose, methacrylic acid copolymer, polyethylene glycol, propylene glycol, shellac glaze (modified), sugar spheres, talc, titanium dioxide and triethyl citrate. The 10 mg and 40 mg capsule shell contains FD&C blue no. 1, FD&C red no. 40 and FD&C yellow no. 6. The 30 mg capsule shell contains D&C red no. 33 and D&C yellow no. 10. Structural Formula

Methylphenidate hydrochloride extended-release capsules (LA) contains methylphenidate hydrochloride USP, a CNS stimulant. Methylphenidate hydrochloride extended-release capsules (LA) is an extended-release formulation of methylphenidate for oral administration with a bi-modal release profile. Each bead-filled methylphenidate hydrochloride extended-release capsule (LA) contains half the dose as immediate-release beads and half as enteric-coated beads, thus providing an immediate release of methylphenidate and a second delayed release of methylphenidate. The active substance in methylphenidate hydrochloride extended-release capsules (LA) is methyl α-phenyl-2-piperidineacetate hydrochloride, and its structural formula is Methylphenidate hydrochloride USP is a white, odorless, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77 g/mol. Inactive ingredients: Sugar spheres (which contain sucrose and starch (corn)), hypromellose, cellulose acetate butyrate, hypromellose acetate succinate, acetyltributyl citrate, acetone, talc, and purified water. Opaque gelatin capsules contain: titanium dioxide and gelatin. The 10mg capsule contains FD&C Green#3, FD&C#40, and FD&C Yellow #6. The 30 and 40 mg capsules contain D&C Red #28 and FD&C Blue #1. The 60 mg capsules contain iron oxide yellow and sodium lauryl sulfate. The capsules are imprinted with black ink which contains black iron oxide, shellac and potassium hydroxide. The 60 mg black imprinting ink also contains ammonium hydroxide and propylene glycol. ChemicalStructure

QuilliChew ER (methylphenidate hydrochloride extended-release chewable tablets) is available in three dosage strengths - 20 mg, 30 mg and 40 mg. The dosage strengths are expressed in terms of methylphenidate hydrochloride equivalents; however only 15% of methylphenidate is present as methylphenidate hydrochloride salt. The remaining 85% is present as methylphenidate ionically-bound to the sulfonate groups of sodium polystyrene sulfonate particles. QuilliChew ER contains approximately 30% immediate-release and 70% extended-release methylphenidate. The QuilliChew ER extended-release chewable tablets are cherry flavored. Methylphenidate HCl is a central nervous system (CNS) stimulant. The chemical name is methyl α- phenyl-2-piperidineacetate hydrochloride, and its structural formula is shown in Figure 1. Figure 1: Methylphenidate HCl Structure Methylphenidate HCl is a white, odorless crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. QuilliChew ER also contains the following inactive ingredients: aspartame [see Warnings and Precautions ( 5.8 ) ] , cherry flavor, citric acid, crospovidone, D&C red #30 (for 30 mg strength), D&C red #7 (for 40 mg strength), guar gum, magnesium stearate, mannitol, microcrystalline cellulose, polyvinyl acetate, polyvinyl alcohol, povidone, silicon dioxide, sodium polystyrene sulfonate, talc, triacetin, xanthan gum. structure

QUILLIVANT XR is a powder that, after reconstitution with water, forms an extended-release oral suspension formulation of methylphenidate intended for once daily oral administration. QUILLIVANT XR contains approximately 20% immediate-release and 80% extended-release methylphenidate. After reconstitution, QUILLIVANT XR is available in a 25 mg per 5 mL (5 mg per mL) extended-release oral suspension. Methylphenidate HCl is a central nervous system (CNS) stimulant. The chemical name is methyl α-phenyl-2-piperidineacetate hydrochloride, and its structural formula is shown in Figure 1. Figure 1: Methylphenidate HCl structure C 14 H 19 NO 2 •HCI Mol. Wt. 269.77 Methylphenidate HCl is a white, odorless crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. QUILLIVANT XR also contains the following inactive ingredients: sodium polystyrene sulfonate, povidone, triacetin, polyvinyl acetate, sucrose, anhydrous trisodium citrate, anhydrous citric acid, sodium benzoate, sucralose, poloxamer 188, corn starch, xanthan gum, talc, banana flavor, and silicon dioxide. structure

RELEXXII contains methylphenidate, a CNS stimulant, present as methylphenidate hydrochloride salt. Chemically, methylphenidate hydrochloride is d,l (racemic) methyl α-phenyl-2-piperidineacetate hydrochloride. Its empirical formula is C 14 H 19 NO 2 •HCl. Its structural formula is: Methylphenidate hydrochloride is a white, odorless crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. It has a pKa of 8.71 (at 21.5°C). Its molecular weight is 269.77. RELEXXII is for oral administration and is available in the following strengths: 18 mg, 27 mg, 36 mg, 45 mg, 54 mg, 63 mg, and 72 mg containing methylphenidate hydrochloride (equivalent to 15.6 mg, 23.4 mg, 31.1 mg, 38.9 mg, 46.7 mg, 54.5 mg, and 62.3 mg methylphenidate respectively). RELEXXII contains the following inactive ingredients: cellulose acetate, colloidal silicon dioxide, ferrosoferric oxide, hypromellose, iron oxide black, lactose monohydrate, magnesium stearate, phosphoric acid, polyethylene glycol, polyethylene oxide, sodium chloride, succinic acid, titanium dioxide, triacetin. RELEXXII also contains the following color additives: 27 mg: FD&C Yellow #6 Aluminum Lake, FD&C Blue #2 Aluminum Lake, FD&C Red #40 Aluminum Lake 45 mg: FD&C Red #40 Aluminum Lake 54 mg: FD&C Yellow #6 Aluminum Lake, FD&C Red #40 Aluminum Lake, FD&C Blue #2 Aluminum Lake 18 and 63 mg: iron oxide red, iron oxide yellow 72 mg: FD&C Blue #1 Aluminum Lake System Components and Performance RELEXXII uses osmotic pressure to deliver methylphenidate hydrochloride at a controlled rate. The system, which resembles a conventional tablet in appearance, comprises an osmotically active bilayer core surrounded by a semipermeable membrane with an immediate-release drug overcoat. The bilayer core is composed of a drug layer containing the drug and excipients, and a push layer containing osmotically active components. There is a precision-laser drilled orifice on the drug-layer end of the tablet. In an aqueous environment, such as the gastrointestinal tract, the drug overcoat dissolves within one hour, providing an initial dose of methylphenidate. Water permeates through the membrane into the tablet core. As the osmotically active polymer excipients expand, methylphenidate is released through the orifice. The membrane controls the rate at which water enters the tablet core, which in turn controls drug delivery. Furthermore, the drug release rate from the system increases with time over a period of 6 to 7 hours due to the drug-concentration gradient incorporated into the two drug layers of core of RELEXXII. The biologically inert components of the tablet remain intact during gastrointestinal transit and are eliminated in the stool as a tablet shell along with insoluble core components. It is possible that RELEXXII may be visible on abdominal x-rays under certain circumstances, especially when digital enhancing techniques are utilized. RELEXXII Structural Formula

Ritalin LA contains methylphenidate hydrochloride, a CNS stimulant. Ritalin LA extended-release capsules is an extended-release formulation of methylphenidate for oral administration with a bi-modal release profile. Each bead-filled Ritalin LA capsule contains half the dose as immediate-release beads and half as enteric-coated beads, thus providing an immediate release of methylphenidate and a second delayed release of methylphenidate. The active substance in Ritalin LA is methyl α-phenyl-2-piperidineacetate hydrochloride, and its structural formula is Methylphenidate hydrochloride USP is a white, odorless, fine crystalline powder. Its solutions are acid to litmus. It is freely soluble in water and in methanol, soluble in alcohol, and slightly soluble in chloroform and in acetone. Its molecular weight is 269.77 g/mol. Inactive ingredients: ammonio methacrylate copolymer, black iron oxide (10 and 40 mg capsules only), gelatin, methacrylic acid copolymer, polyethylene glycol, red iron oxide (10 and 40 mg capsules only), sugar spheres, talc, titanium dioxide, triethyl citrate, and yellow iron oxide (10, 30, and 40 mg capsules only). Ritalin LA structural formula.