paliperidone - Medication Listings

Paliperidone extended-release tablet contains paliperidone USP, an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. Paliperidone contains a racemic mixture of (+)- and (-)- paliperidone. The chemical name is (±)-3-[2-[4-(6-fluoro-1,2-‑benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-‑pyrido[1,2-a]pyrimidin-4-one. Its molecular formula is C 23 H 27 FN 4 O 3 and its molecular weight is 426.49. The structural formula is: Paliperidone is sparingly soluble in 0.1N HCl and methylene chloride; practically insoluble in water, 0.1N NaOH, and hexane; and slightly soluble in N,N-dimethylformamide. Paliperidone extended-release tablets are intended for oral administration and are available in 1.5 mg (brown), 3 mg (white to off-white), 6 mg (yellow), and 9 mg (pink) strengths. Paliperidone extended-release tablets are formulated as a polymer matrix based once-a-day controlled release tablet for oral use. Inactive ingredients are polyethylene oxide, hypromellose, anhydrous lactose, magnesium stearate, ethyl cellulose, triethyl citrate, talc, titanium dioxide and polyethylene glycol. The 1.5 mg and 6 mg tablets also contain lactose monohydrate, iron oxide yellow and iron oxide red. The 9 mg tablets also contain lactose monohydrate and iron oxide red. Imprinting ink contains shellac glaze, iron oxide black, N-butyl alcohol, propylene glycol and ammonium hydroxide. Delivery System Components and Performance Paliperidone extended release tablets employ a film-coated hydrophilic hydrogel matrix to deliver paliperidone at a controlled rate over 24 hours. The system comprises of: a core consists of the drug, rate-controlling polymer (forming hydrogel) and other excipients with pH independent coat surrounding core, comprising of water soluble and insoluble polymer and a film coat over it. Upon ingestion outer film coat dissolves exposing the coated tablet to the gastric fluids. Once the water soluble polymer from coat gets dissolved, pores are formed which allow penetration of fluid inside the membrane leading to hydration of core-forming hydrogel. Drug release occurs via slow diffusion out of the gel layer and subsequent gel erosion. structure

Paliperidone extended-release tablets contains paliperidone USP, an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. Paliperidone extended-release tablets contains a racemic mixture of (+)- and (-)- paliperidone. The chemical name is (±)-3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one. Its molecular formula is C 23 H 27 FN 4 O 3 and its molecular weight is 426.48. The structural formula is: Paliperidone, USP is sparingly soluble in 0.1N hydrochloride and methylene chloride; practically insoluble in water, 0.1N sodium hydroxide and hexane; and slightly soluble in N,N-dimethylformamide, tetrahydrofuran. Paliperidone extended-release tablets are intended for oral administration and are available in 1.5 mg (brown), 3 mg (white to off white), 6 mg (beige) and 9 mg (pink) strengths. Paliperidone extended-release tablets utilizes OROS ® osmotic drug-release technology. Paliperidone extended-release tablets contain the following inactive ingredients: butylated hydroxy toluene, cellulose acetate, ferric oxide red, hydroxy ethyl cellulose, hypromellose, polyethylene glycol, polyethylene oxide, povidone, sodium chloride, sodium stearyl fumarate and titanium dioxide. Additionally, each 1.5 mg and 6 mg tablet contains iron oxide yellow, and 3 mg tablet contains talc. The tablet is imprinted with black pharmaceutical ink and contains following inactive ingredients: ferrosoferric oxide, propylene glycol and shellac. Delivery System Components and Performance Paliperidone Extended-Release Tablets uses osmotic pressure to deliver paliperidone at a controlled rate. The delivery system, which resembles a round-shaped tablet in appearance, consists of an osmotically active bilayer core surrounded by a subcoat and semipermeable membrane. The bilayer core is composed of two drug layers containing the drug and excipients, and a push layer containing osmotically active components. There is two precision laser-drilled orifice on the drug-layer side of the tablet. Each tablet strength has a different colored water-dispersible overcoat and print markings. In an aqueous environment, such as the gastrointestinal tract, the water-dispersible color overcoat erodes quickly. Water then enters the tablet through the semipermeable membrane that controls the rate at which water enters the tablet core, which, in turn, determines the rate of drug delivery. The hydrophilic polymers of the core hydrate and swell, creating a gel containing paliperidone that is then pushed out through the tablet orifice. 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. Image

Paliperidone extended-release tablet contains paliperidone USP, an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. Paliperidone contains a racemic mixture of (+)- and (-)- paliperidone. The chemical name is (±)-3-[2-[4-(6-fluoro-1,2-­benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-­pyrido[1,2-a]pyrimidin-4-one. Its molecular formula is C 23 H 27 FN 4 O 3 and its molecular weight is 426.49. The structural formula is: Paliperidone is sparingly soluble in 0.1N HCl and methylene chloride; practically insoluble in water, 0.1N NaOH, and hexane; and slightly soluble in N,N-dimethylformamide. Paliperidone extended-release tablets are intended for oral administration and are available in 1.5 mg (brown), 3 mg (white to off-white), 6 mg (yellow), and 9 mg (pink) strengths. Paliperidone extended-release tablets are formulated as a polymer matrix based once-a-day controlled release tablet for oral use. Inactive ingredients are polyethylene oxide, hypromellose, anhydrous lactose, magnesium stearate, ethyl cellulose, triethyl citrate, talc, titanium dioxide and polyethylene glycol. The 1.5 mg and 6 mg tablets also contain lactose monohydrate, iron oxide yellow and iron oxide red. The 9 mg tablets also contain lactose monohydrate and iron oxide red. Imprinting ink contains shellac glaze, iron oxide black, N-butyl alcohol, propylene glycol and ammonium hydroxide. Delivery System Components and Performance Paliperidone extended release tablets employ a film-coated hydrophilic hydrogel matrix to deliver paliperidone at a controlled rate over 24 hours. The system comprises of: a core consists of the drug, rate-controlling polymer (forming hydrogel) and other excipients with pH independent coat surrounding core, comprising of water soluble and insoluble polymer and a film coat over it. Upon ingestion outer film coat dissolves exposing the coated tablet to the gastric fluids. Once the water soluble polymer from coat gets dissolved, pores are formed which allow penetration of fluid inside the membrane leading to hydration of core-forming hydrogel. Drug release occurs via slow diffusion out of the gel layer and subsequent gel erosion. structure

Paliperidone extended-release tablet contains paliperidone USP, an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. Paliperidone contains a racemic mixture of (+)- and (-)- paliperidone. The chemical name is (±)-3-[2-[4-(6-fluoro-1,2-­benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-­pyrido[1,2-a]pyrimidin-4-one. Its molecular formula is C 23 H 27 FN 4 O 3 and its molecular weight is 426.49. The structural formula is: Paliperidone is sparingly soluble in 0.1N HCl and methylene chloride; practically insoluble in water, 0.1N NaOH, and hexane; and slightly soluble in N,N-dimethylformamide. Paliperidone extended-release tablets are intended for oral administration and are available in 1.5 mg (brown), 3 mg (white to off-white), 6 mg (yellow), and 9 mg (pink) strengths. Paliperidone extended-release tablets are formulated as a polymer matrix based once-a-day controlled release tablet for oral use. Inactive ingredients are polyethylene oxide, hypromellose, anhydrous lactose, magnesium stearate, ethyl cellulose, triethyl citrate, talc, titanium dioxide and polyethylene glycol. The 1.5 mg and 6 mg tablets also contain lactose monohydrate, iron oxide yellow and iron oxide red. The 9 mg tablets also contain lactose monohydrate and iron oxide red. Imprinting ink contains shellac glaze, iron oxide black, N-butyl alcohol, propylene glycol and ammonium hydroxide. Delivery System Components and Performance Paliperidone extended release tablets employ a film-coated hydrophilic hydrogel matrix to deliver paliperidone at a controlled rate over 24 hours. The system comprises of: a core consists of the drug, rate-controlling polymer (forming hydrogel) and other excipients with pH independent coat surrounding core, comprising of water soluble and insoluble polymer and a film coat over it. Upon ingestion outer film coat dissolves exposing the coated tablet to the gastric fluids. Once the water soluble polymer from coat gets dissolved, pores are formed which allow penetration of fluid inside the membrane leading to hydration of core-forming hydrogel. Drug release occurs via slow diffusion out of the gel layer and subsequent gel erosion. structure

Paliperidone extended-release tablet contains paliperidone USP, an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. Paliperidone contains a racemic mixture of (+)- and (-)- paliperidone. The chemical name is (±)-3-[2-[4-(6-fluoro-1,2-­benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-­pyrido[1,2-a]pyrimidin-4-one. Its molecular formula is C 23 H 27 FN 4 O 3 and its molecular weight is 426.49. The structural formula is: Paliperidone is sparingly soluble in 0.1N HCl and methylene chloride; practically insoluble in water, 0.1N NaOH, and hexane; and slightly soluble in N,N-dimethylformamide. Paliperidone extended-release tablets are intended for oral administration and are available in 1.5 mg (brown), 3 mg (white to off-white), 6 mg (yellow), and 9 mg (pink) strengths. Paliperidone extended-release tablets are formulated as a polymer matrix based once-a-day controlled release tablet for oral use. Inactive ingredients are polyethylene oxide, hypromellose, anhydrous lactose, magnesium stearate, ethyl cellulose, triethyl citrate, talc, titanium dioxide and polyethylene glycol. The 1.5 mg and 6 mg tablets also contain lactose monohydrate, iron oxide yellow and iron oxide red. The 9 mg tablets also contain lactose monohydrate and iron oxide red. Imprinting ink contains shellac glaze, iron oxide black, N-butyl alcohol, propylene glycol and ammonium hydroxide. structure Delivery System Components and Performance Paliperidone extended release tablets employ a film-coated hydrophilic hydrogel matrix to deliver paliperidone at a controlled rate over 24 hours. The system comprises of: a core consists of the drug, rate-controlling polymer (forming hydrogel) and other excipients with pH independent coat surrounding core, comprising of water soluble and insoluble polymer and a film coat over it. Upon ingestion outer film coat dissolves exposing the coated tablet to the gastric fluids. Once the water soluble polymer from coat gets dissolved, pores are formed which allow penetration of fluid inside the membrane leading to hydration of core-forming hydrogel. Drug release occurs via slow diffusion out of the gel layer and subsequent gel erosion.

Paliperidone extended-release tablet contains paliperidone, USP, an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. Paliperidone extended-release tablets contain a racemic mixture of (+)- and (-)- Paliperidone, USP. The chemical name is (±)-3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H- pyrido [l,2-a]pyrimidin-4-one. Its molecular formula is C 23 H 27 FN 4 O 3 and its molecular weight is 426.49. The structural formula is: Paliperidone, USP is sparingly soluble in 0.1 N hydrochloride and in methylene chloride, slightly soluble in N,N dimethyl formamide and in tetrahydrofuran; practically insoluble in water, in 0.1 N sodium hydroxide, and in hexane. Paliperidone extended-release tablets are intended for oral administration and are available in 1.5 mg (orange-brown), 3 mg (white), 6 mg (beige), and 9 mg (pink) strengths. Paliperidone Extended-Release Tablets are formulated as a polymer matrix based once-a-day controlled release tablet for oral use. Inactive ingredients are mannitol, microcrystalline cellulose, hypromellose, magnesium stearate, hydroxypropyl cellulose, hypromellose phthalate, ethylcellulose, dibutyl sebacate, polyethylene glycol and titanium dioxide. The 1.5 mg tablets also contain FD&C Yellow #6 Aluminum Lake, D&C Yellow #10 Aluminum Lake and FD&C Blue #2 Aluminum Lake. The 6 mg tablets also contain iron oxide yellow, iron oxide red and iron oxide black. The 9 mg tablets also contain iron oxide red. The tablets are imprinted with edible black ink. The edible ink contains shellac, isopropyl alcohol, iron oxide black, n-butyl alcohol, propylene glycol and ammonium hydroxide. Delivery System Components and Performance Paliperidone Extended-Release Tablet uses a pH-independent hydrophilic matrix and pH dependent enteric coating to deliver Paliperidone, USP at a controlled rate. The Paliperidone Extended-Release Tablet comprises of an inner core made of the drug, rate controlling pH independent hydrophilic polymers and other excipients. The core is surrounded by barrier layer of pH independent polymer followed by enteric coating. When tablet expose to an acidic environment such as the stomach, the drug release will be minimal due to outer enteric coating of the pH dependent polymer. The outer enteric coating upon reaching an environment of pH 5.5 and above it starts to dissolve and the polymer in the inner core tablet will hydrate to form a gel layer. The drug releases via diffusion from a gel layer and subsequently through gel erosion. structure

Paliperidone extended-release tablet contains paliperidone USP, an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. Paliperidone contains a racemic mixture of (+)- and (-)- paliperidone. The chemical name is (±)-3-[2-[4-(6-fluoro-1,2-­benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-­pyrido[1,2-a]pyrimidin-4-one. Its molecular formula is C 23 H 27 FN 4 O 3 and its molecular weight is 426.49. The structural formula is: Paliperidone is sparingly soluble in 0.1N HCl and methylene chloride; practically insoluble in water, 0.1N NaOH, and hexane; and slightly soluble in N,N-dimethylformamide. Paliperidone extended-release tablets are intended for oral administration and are available in 1.5 mg (brown), 3 mg (white to off-white), 6 mg (yellow), and 9 mg (pink) strengths. Paliperidone extended-release tablets are formulated as a polymer matrix based once-a-day controlled release tablet for oral use. Inactive ingredients are polyethylene oxide, hypromellose, anhydrous lactose, magnesium stearate, ethyl cellulose, triethyl citrate, talc, titanium dioxide and polyethylene glycol. The 1.5 mg and 6 mg tablets also contain lactose monohydrate, iron oxide yellow and iron oxide red. The 9 mg tablets also contain lactose monohydrate and iron oxide red. Imprinting ink contains shellac glaze, iron oxide black, N-butyl alcohol, propylene glycol and ammonium hydroxide. structure Delivery System Components and Performance Paliperidone extended release tablets employ a film-coated hydrophilic hydrogel matrix to deliver paliperidone at a controlled rate over 24 hours. The system comprises of: a core consists of the drug, rate-controlling polymer (forming hydrogel) and other excipients with pH independent coat surrounding core, comprising of water soluble and insoluble polymer and a film coat over it. Upon ingestion outer film coat dissolves exposing the coated tablet to the gastric fluids. Once the water soluble polymer from coat gets dissolved, pores are formed which allow penetration of fluid inside the membrane leading to hydration of core-forming hydrogel. Drug release occurs via slow diffusion out of the gel layer and subsequent gel erosion.

Paliperidone extended-release tablet contains paliperidone, USP, an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. Paliperidone extended-release tablets contain a racemic mixture of (+)- and (-)- paliperidone, USP. The chemical name is (±)-3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H- pyrido [l,2-a]pyrimidin-4-one. Its molecular formula is C23H27FN4O3 and its molecular weight is 426.49. The structural formula is: Paliperidone, USP is sparingly soluble in 0.1N hydrochloride and methylene chloride; practically insoluble in water, 0.1N sodium hydroxide, and hexane; and slightly soluble in N,N-dimethyl formamide and tetrahydrofuran. Paliperidone extended-release tablets are intended for oral administration and are available in 1.5 mg (orange-brown), 3 mg (white), 6 mg (beige), and 9 mg (pink) strengths. Paliperidone extended-release tablets are formulated as a polymer matrix based once-a-day controlled release tablet for oral use. Inactive ingredients are dibutyl sebacate, ethylcellulose, hydroxypropyl cellulose, hypromellose, hypromellose phthalate, magnesium stearate, mannitol, microcrystalline cellulose, polyethylene glycol and titanium dioxide. The 1.5 mg tablets also contain D&C Yellow #10 Aluminum Lake, FD&C Blue #2 Aluminum Lake and FD&C Yellow #6 Aluminum Lake. The 6 mg tablets also contain iron oxide black, iron oxide red and iron oxide yellow. The 9 mg tablets also contain iron oxide red. The tablets are imprinted with edible black ink. The edible ink contains iron oxide black and propylene glycol, shellac. Delivery System Components and Performance Paliperidone extended-release tablet uses a pH-independent hydrophilic matrix and pH dependent enteric coating to deliver paliperidone, USP at a controlled rate. The paliperidone extended-release tablet comprises of an inner core made of the drug, rate controlling pH independent hydrophilic polymers and other excipients. The core is surrounded by barrier layer of pH independent polymer followed by enteric coating. When tablet expose to an acidic environment such as the stomach, the drug release will be minimal due to outer enteric coating of the pH dependent polymer. The outer enteric coating upon reaching an environment of pH 5.5 and above it starts to dissolve and the polymer in the inner core tablet will hydrate to form a gel layer. The drug releases via diffusion from a gel layer and subsequently through gel erosion. structure

Paliperidone extended-release tablets contains paliperidone USP, an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. Paliperidone, USP contains a racemic mixture of (+)- and (-)- paliperidone. The chemical name is (±)-3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one. Its molecular formula is C 23 H 27 FN 4 O 3 and its molecular weight is 426.49. The structural formula is: Paliperidone, USP is sparingly soluble in 0.1N HCl and methylene chloride; practically insoluble in water, 0.1N NaOH, and hexane; and slightly soluble in N,N-dimethylformamide. Paliperidone extended-release tablets are intended for oral administration and are available in 1.5 mg (brown), 3 mg (white), 6 mg (light beige), and 9 mg (pink) strengths. Inactive ingredients are colloidal silicon dioxide, fumaric acid, hypromellose, lactose monohydrate, macrogol, magnesium stearate, methacrylic acid copolymer, microcrystalline cellulose, polyethylene oxides, povidone, talc and triethyl citrate. The 1.5 mg tablets also contain iron oxide black, iron oxide red and iron oxide yellow. The 6 mg tablets also contain iron oxide red and iron oxide yellow. The 9 mg tablets also contain iron oxide black, iron oxide red and iron oxide yellow. chem structure

Paliperidone extended-release tablets contains paliperidone USP, an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. Paliperidone, USP contains a racemic mixture of (+)- and (-)- paliperidone. The chemical name is (±)-3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one. Its molecular formula is C 23 H 27 FN 4 O 3 and its molecular weight is 426.49. The structural formula is: Paliperidone, USP is sparingly soluble in 0.1N HCl and methylene chloride; practically insoluble in water, 0.1N NaOH, and hexane; and slightly soluble in N,N-dimethylformamide. Paliperidone extended-release tablets are intended for oral administration and are available in 1.5 mg (brown), 3 mg (white), 6 mg (light beige), and 9 mg (pink) strengths. Inactive ingredients are colloidal silicon dioxide, fumaric acid, hypromellose, lactose monohydrate, macrogol, magnesium stearate, methacrylic acid copolymer, microcrystalline cellulose, polyethylene oxides, povidone, talc and triethyl citrate. The 1.5 mg tablets also contain iron oxide black, iron oxide red and iron oxide yellow. The 6 mg tablets also contain iron oxide red and iron oxide yellow. The 9 mg tablets also contain iron oxide black, iron oxide red and iron oxide yellow. Delivery System Components and Performance Paliperidone extended-release tablets use a hydrophilic matrix core and pH dependent enteric coating to deliver paliperidone, USP at a controlled rate. The delivery system consists of an inner core composed of the drug, rate controlling polymers and other excipients. The core is coated with multiple layers comprising of delayed release polymer and a drug layering polymer system. Each tablet strength has a different colored coating. In an aqueous environment, such as the gastrointestinal tract, the water-dispersible overcoat erodes quickly. The combination of the coating layers ensures an initial drug release, while delaying exposure of the matrix core. Upon attaining the intended pH, the delayed release coating dissolves, the hydrophilic polymers of the core hydrate and swell forming a gel like barrier that regulates the rate at which the drug is released from the tablet, ensuring a steady and prolonged delivery. chem structure

Paliperidone extended-release tablet contains paliperidone USP, an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. Paliperidone contains a racemic mixture of (+)- and (-)- paliperidone. The chemical name is (±)-3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one. Its molecular formula is C 23 H 27 FN 4 O 3 and its molecular weight is 426.49. The structural formula is: Paliperidone is sparingly soluble in 0.1N HCl and methylene chloride; practically insoluble in water, 0.1N NaOH, and hexane; and slightly soluble in N,N-dimethylformamide. Paliperidone extended-release tablets are intended for oral administration and are available in 1.5 mg (brown), 3 mg (white to off-white), 6 mg (yellow), and 9 mg (pink) strengths. Paliperidone extended-release tablets are formulated as a polymer matrix based once-a-day controlled release tablet for oral use. Inactive ingredients are polyethylene oxide, hypromellose, anhydrous lactose, magnesium stearate, ethyl cellulose, triethyl citrate, talc, titanium dioxide and polyethylene glycol. The 1.5 mg and 6 mg tablets also contain lactose monohydrate, iron oxide yellow and iron oxide red. The 9 mg tablets also contain lactose monohydrate and iron oxide red. Imprinting ink contains shellac glaze, iron oxide black, N-butyl alcohol, propylene glycol and ammonium hydroxide. Structure Formula Delivery System Components and Performance Paliperidone extended release tablets employ a film-coated hydrophilic hydrogel matrix to deliver paliperidone at a controlled rate over 24 hours. The system comprises of: a core consists of the drug, rate-controlling polymer (forming hydrogel) and other excipients with pH independent coat surrounding core, comprising of water soluble and insoluble polymer and a film coat over it. Upon ingestion outer film coat dissolves exposing the coated tablet to the gastric fluids. Once the water soluble polymer from coat gets dissolved, pores are formed which allow penetration of fluid inside the membrane leading to hydration of core-forming hydrogel. Drug release occurs via slow diffusion out of the gel layer and subsequent gel erosion.

Paliperidone extended-release tablet contains paliperidone USP, an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. Paliperidone contains a racemic mixture of (+)- and (-)- paliperidone. The chemical name is (±)-3-[2-[4-(6-fluoro-1,2-­benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-­pyrido[1,2-a]pyrimidin-4-one. Its molecular formula is C 23 H 27 FN 4 O 3 and its molecular weight is 426.49. The structural formula is: Paliperidone is sparingly soluble in 0.1N HCl and methylene chloride; practically insoluble in water, 0.1N NaOH, and hexane; and slightly soluble in N,N-dimethylformamide. Paliperidone extended-release tablets are intended for oral administration and are available in 1.5 mg (brown), 3 mg (white to off-white), 6 mg (yellow), and 9 mg (pink) strengths. Paliperidone extended-release tablets are formulated as a polymer matrix based once-a-day controlled release tablet for oral use. Inactive ingredients are polyethylene oxide, hypromellose, anhydrous lactose, magnesium stearate, ethyl cellulose, triethyl citrate, talc, titanium dioxide and polyethylene glycol. The 1.5 mg and 6 mg tablets also contain lactose monohydrate, iron oxide yellow and iron oxide red. The 9 mg tablets also contain lactose monohydrate and iron oxide red. Imprinting ink contains shellac glaze, iron oxide black, N-butyl alcohol, propylene glycol and ammonium hydroxide. structure Delivery System Components and Performance Paliperidone extended release tablets employ a film-coated hydrophilic hydrogel matrix to deliver paliperidone at a controlled rate over 24 hours. The system comprises of: a core consists of the drug, rate-controlling polymer (forming hydrogel) and other excipients with pH independent coat surrounding core, comprising of water soluble and insoluble polymer and a film coat over it. Upon ingestion outer film coat dissolves exposing the coated tablet to the gastric fluids. Once the water soluble polymer from coat gets dissolved, pores are formed which allow penetration of fluid inside the membrane leading to hydration of core-forming hydrogel. Drug release occurs via slow diffusion out of the gel layer and subsequent gel erosion.

Paliperidone extended-release tablets contains paliperidone USP, an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. Paliperidone, USP contains a racemic mixture of (+)- and (-)- paliperidone. The chemical name is (±)-3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one. Its molecular formula is C 23 H 27 FN 4 O 3 and its molecular weight is 426.49. The structural formula is: Paliperidone, USP is sparingly soluble in 0.1N HCl and methylene chloride; practically insoluble in water, 0.1N NaOH, and hexane; and slightly soluble in N,N-dimethylformamide. Paliperidone extended-release tablets are intended for oral administration and are available in 1.5 mg (brown), 3 mg (white), 6 mg (light beige), and 9 mg (pink) strengths. Inactive ingredients are colloidal silicon dioxide, fumaric acid, hypromellose, lactose monohydrate, macrogol, magnesium stearate, methacrylic acid copolymer, microcrystalline cellulose, polyethylene oxides, povidone, talc and triethyl citrate. The 1.5 mg tablets also contain iron oxide black, iron oxide red and iron oxide yellow. The 6 mg tablets also contain iron oxide red and iron oxide yellow. The 9 mg tablets also contain iron oxide black, iron oxide red and iron oxide yellow.

Paliperidone extended-release tablets contain paliperidone, an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. Paliperidone extended-release tablets contain a racemic mixture of (+)- and (-)- paliperidone. The chemical name is (±)-3-[2-[ 4-(6-fluoro-1 ,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one. Its molecular formula is C 23 H 27 FN 4 O 3 and its molecular weight is 426.48. The structural formula is: Paliperidone is sparingly soluble in 0.1 N HCl and in methylene chloride practically insoluble in water, in 0.1N NaOH, and in hexane and slightly soluble in N,N-dimethyl formamide and in tetrahydrofuran. Paliperidone extended-release tablets are intended for oral administration and are available in 1.5 mg (brown), 3 mg (white to off-white), 6 mg (yellow), and 9 mg (pink) strengths. Paliperidone extended-release tablets utilize OROS® osmotic drug-release technology. Inactive ingredients are polyethylene oxide, microcrystalline cellulose, povidone, butylated hydroxytoluene, colloidal silicone dioxide, magnesium stearate, sodium chloride, ferric oxide, hydroxypropyl cellulose, cellulose acetate, polyethylene glycol. Film coating contains hypromellose, titanium dioxide, and for 1.5 mg polyethylene glycol/macrogol MW 400, iron oxide yellow, iron oxide red. For 3 mg polyethylene glycol/macrogol MW 400. for 6 mg polyethylene glycol/macrogol 8000, talc, iron oxide yellow, black iron oxide. for 9 mg polyethylene glycol/macrogol MW 400, iron oxide yellow, iron oxide red. For imprinting, ink contains shellac glaze, propylene glycol and black iron oxide. Delivery System Components and Performance Paliperidone extended-release tablets use osmotic pressure to deliver paliperidone at a controlled rate. The delivery system, which resembles a round-shaped tablet in appearance, consists of an osmotically active bilayer core surrounded by a subcoat and semipermeable membrane. The bilayer core is composed of one drug layer containing the drug and excipients, and a push layer containing osmotically active components. There is one precision laser-drilled orifice on the drug-layer dome of the tablet. Each tablet strength has a different colored water-dispersible overcoat and print markings. In an aqueous environment, such as the gastrointestinal tract, the water-dispersible color overcoat erodes quickly. Water then enters the tablet through the semipermeable membrane that controls the rate at which water enters the tablet core, which, in turn, determines the rate of drug delivery. The hydrophilic polymers of the core hydrate and swell, creating a gel containing paliperidone that is then pushed out through the tablet orifices. 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. structure

Paliperidone extended-release tablets contain paliperidone, an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. Paliperidone extended-release tablets contains a racemic mixture of (+)- and (-)- paliperidone. The chemical name is (±)-3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one. Its molecular formula is C 23 H 27 FN 4 O 3 and its molecular weight is 426.49. The structural formula is: Paliperidone is sparingly soluble in dichloromethane, slightly soluble in 0.1 N hydrochloric acid and insoluble in water. Paliperidone extended-release tablets are intended for oral administration and are available in 1.5 mg (brown), 3 mg (white), 6 mg (beige), and 9 mg (pink) strengths. Paliperidone extended-release tablets utilize osmotic drug release technology . Inactive ingredients are butylated hydroxy toluene, cellulose acetate, hydroxy propyl cellulose, hypromellose, iron oxide black, iron oxide red, iron oxide yellow, lactose monohydrate, polyethylene glycol, polyethylene oxide, povidone, propylene glycol, shellac, sodium chloride, stearic acid, and titanium dioxide. Delivery System Components and Performance Paliperidone extended-release tablets use osmotic pressure to deliver paliperidone at a controlled rate. The delivery system, which resembles a round-shaped tablet in appearance, consists of an osmotically active bilayer core surrounded by a subcoat and semipermeable membrane. The bilayer core is composed of drug layer containing the drug and excipients, and a push layer containing osmotically active components. There are two precision laser-drilled orifices on the drug-layer dome of the tablet. Each tablet strength has a different colored water-dispersible overcoat and print markings. In an aqueous environment, such as the gastrointestinal tract, the water-dispersible color overcoat erodes quickly. Water then enters the tablet through the semipermeable membrane that controls the rate at which water enters the tablet core, which, in turn, determines the rate of drug delivery. The hydrophilic polymers of the core hydrate and swell, creating a gel containing paliperidone that is then pushed out through the tablet orifices. 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. Image

Paliperidone Extended-Release Tablets contains paliperidone, an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. Paliperidone Extended-Release Tablets contains a racemic mixture of (+)- and (-)-paliperidone. The chemical name is (±)-3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1piperidinyl]ethyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrido[1,2-a] pyrimidin-4-one. Its molecular formula is C 23 H 27 FN 4 O 3 and its molecular weight is 426.49. The structural formula is Paliperidone is sparingly soluble in 0.1N HCl and in methylene chloride; practically insoluble in water, in 0.1N NaOH and hexane; and slightly soluble in N, N-dimethyl formamide and in Tetrahydrofuran. Paliperidone Extended-Release Tablets are intended for oral administration and are available in 1.5 mg (blue), 3 mg (white), 6 mg (yellow), and 9 mg (beige) strengths. Paliperidone Extended-Release Tablets utilizes Osmotic Drug delivery (OROS, Push-Pull technology) system. Inactive ingredients are hydroxypropyl cellulose, butylated hydroxytoluene, polyethylene oxide, talc, sodium chloride, colloidal silicon dioxide, sodium stearyl fumarate, iron oxide red, cellulose acetate, polyethylene glycol, polyvinyl alcohol, and titanium dioxide. The 1.5 mg tablets also contain F D & C blue # 2 and the 6 mg, and 9 mg tablets also contain iron oxide yellow. The imprinting ink contains shellac, black iron oxide, propylene glycol, and ammonium hydroxide. Chemical Structure Delivery System Components and Performance Paliperidone Extended-Release Tablets uses osmotic pressure to deliver paliperidone at a controlled rate. The tablets contain an osmotically active bi-layer core tablet that consists of a drug layer containing the entire amount of active ingredient in a hydrophilic polymer matrix and a push layer that contains an osmotic agent in a hydrophilic, swell-able polymer matrix. The bi-layer core tablet is coated with a release-controlling semi-permeable membrane (SPM). The SPM allows water permeation into the core without allowing components to quickly dissipate from the core. A laser-drilled aperture is present on the drug layer side of the SPM-coated tablet and is necessary for delivery. The tablets contain a water-soluble cosmetic over-coating that is imprinted with an identifier. Once ingested, the cosmetic over-coating rapidly dissipates in the gastrointestinal tract. The SPM allows water to penetrate into the core as the osmotic agent in the push layer provides a driving force for water influx. Once hydrated, the swell-able polymer matrix in the push layer (high molecular weight polyethylene oxide) expands, exerting a pressure on the drug layer portion of the core tablet which forces it out of the laser-drilled aperture in a plug-flow fashion. As the release rate is controlled by the rate of water influx into the core (SPM permeability), the delivery is independent of pH or gastrointestinal motility. The biologically inert tablet core, containing residual push layer components, remains intact and is eliminated in the feces. Drug absorption is controlled by a combination of drug release from the tablet and subsequent dissolution in the gastrointestinal tract.

Paliperidone Extended-Release Tablets contains paliperidone, an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. Paliperidone Extended-Release Tablets contains a racemic mixture of (+)- and (-)-paliperidone. The chemical name is (±)-3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1piperidinyl]ethyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4Hpyrido[1,2-a] pyrimidin-4-one. Its molecular formula is C 23 H 27 FN 4 O 3 and its molecular weight is 426.49. The structural formula is Paliperidone is sparingly soluble in 0.1N HCl and in methylene chloride; practically insoluble in water, in 0.1N NaOH and hexane; and slightly soluble in N, N-dimethyl formamide and in Tetrahydrofuran. Paliperidone Extended-Release Tablets are intended for oral administration and are available in 1.5 mg (blue), 3 mg (white), 6 mg (yellow), and 9 mg (beige) strengths. Paliperidone Extended-Release Tablets utilizes Osmotic Drug delivery (OROS, Push-Pull technology) system. Inactive ingredients are hydroxypropyl cellulose, butylated hydroxytoluene, polyethylene oxide, talc, sodium chloride, colloidal silicon dioxide, sodium stearyl fumarate, iron oxide red, cellulose acetate, polyethylene glycol, polyvinyl alcohol, and titanium dioxide. The 1.5 mg tablets also contain F D & C blue # 2 and the 6 mg, and 9 mg tablets also contain iron oxide yellow. The imprinting ink contains shellac, black iron oxide, propylene glycol, and ammonium hydroxide. Delivery System Components and Performance Paliperidone Extended-Release Tablets uses osmotic pressure to deliver paliperidone at a controlled rate. The tablets contain an osmotically active bi-layer core tablet that consists of a drug layer containing the entire amount of active ingredient in a hydrophilic polymer matrix and a push layer that contains an osmotic agent in a hydrophilic, swell-able polymer matrix. The bi-layer core tablet is coated with a releasecontrolling semi-permeable membrane (SPM). The SPM allows water permeation into the core without allowing components to quickly dissipate from the core. A laser-drilled aperture is present on the drug layer side of the SPM-coated tablet and is necessary for delivery. The tablets contain a water-soluble cosmetic over-coating that is imprinted with an identifier. Once ingested, the cosmetic over-coating rapidly dissipates in the gastrointestinal tract. The SPM allows water to penetrate into the core as the osmotic agent in the push layer provides a driving force for water influx. Once hydrated, the swell-able polymer matrix in the push layer (high molecular weight polyethylene oxide) expands, exerting a pressure on the drug layer portion of the core tablet which forces it out of the laser-drilled aperture in a plug-flow fashion. As the release rate is controlled by the rate of water influx into the core (SPM permeability), the delivery is independent of pH or gastrointestinal motility. The biologically inert tablet core, containing residual push layer components, remains intact and is eliminated in the feces. Drug absorption is controlled by a combination of drug release from the tablet and subsequent dissolution in the gastrointestinal tract. Chemical Structure

Paliperidone extended-release tablets contain paliperidone, USP an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. Paliperidone extended-release tablets contain a racemic mixture of (+)- and (-)- paliperidone. The chemical name is (±)-3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one. Its molecular formula is C 23 H 27 FN 4 O 3 and its molecular weight is 426.48. The structural formula is: Paliperidone, USP is sparingly soluble in 0.1N HCl and methylene chloride; practically insoluble in water, 0.1N NaOH, and hexane; and slightly soluble in N,N-dimethylformamide. Paliperidone extended-release tablets are intended for oral administration and are available in 1.5 mg (beige), 3 mg (pink), 6 mg (beige), and 9 mg (yellow) strengths. Paliperidone extended-release tablets utilize OROS ® osmotic drug-release technology. Inactive ingredients are lactose monohydrate, sodium chloride, hydroxypropyl methyl cellulose, polyethylene oxides, stearic acid, FD & C Red No. 40, povidone, magnesium stearate, hydroxypropyl cellulose, cellulose acetate, polyethylene glycol, ferrosoferric oxide, propylene glycol, and titanium dioxide. The 1.5 mg and 6 mg strengths also contain iron oxide yellow and iron oxide red. The 3 mg strength also contain iron oxide red. The 9 mg strength also contain iron oxide yellow and polysorbate 80. Delivery System Components and Performance Paliperidone extended-release tablets use osmotic pressure to deliver paliperidone at a controlled rate. The delivery system, which resembles a capsule-shaped tablet in appearance, consists of an osmotically active trilayer core surrounded by a subcoat and semipermeable membrane. The trilayer core is composed of two drug layers containing the drug and excipients, and a push layer containing osmotically active components. There are two precision laser-drilled orifices on the drug-layer dome of the tablet. Each tablet strength has a different colored water-dispersible overcoat and print markings. In an aqueous environment, such as the gastrointestinal tract, the water-dispersible color overcoat erodes quickly. Water then enters the tablet through the semipermeable membrane that controls the rate at which water enters the tablet core, which, in turn, determines the rate of drug delivery. The hydrophilic polymers of the core hydrate and swell, creating a gel containing paliperidone that is then pushed out through the tablet orifices. 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. struct

Paliperidone Extended-Release Tablets contain paliperidone, USP, an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. Paliperidone extended-release tablets contain a racemic mixture of (+)- and (-)- paliperidone. The chemical name is (9 RS )-3-[2-[4-(6-Fluoro-1,2-benzisoxazol-3-yl)piperidin-1-yl]]ethyl]-9-hydroxy-2-methyl-6,7,8,9-tetrahydro-4 H -pyrido[1,2- a ]pyrimidin-4-one. Its molecular formula is C 23 H 27 FN 4 O 3 and its molecular weight is 426.49. The structural formula is: Paliperidone is sparingly soluble in 0.1N HCl and methylene chloride; practically insoluble in water, 0.1N NaOH, and hexane; and slightly soluble in N,N-dimethylformamide. Paliperidone extended-release tablets are intended for oral administration and are available in 3 mg (white), 6 mg (light beige), and 9 mg (pink) strengths. Paliperidone extended-release tablets utilize osmotic drug-release technology [see Description (11) ] . Inactive ingredients are butylated hydroxytoluene, cellulose acetate, colloidal silicon dioxide, hydroxypropyl cellulose, hypromellose, polyethylene glycol, polyethylene oxide, red iron oxide, sodium chloride, sodium stearyl fumarate, talc, titanium dioxide and yellow iron oxide. The 3 mg tablets also contain polyvinyl alcohol. The 6 mg tablets also contain black iron oxide, FD&C Blue No. 1 Aluminum Lake and polyvinyl alcohol. The 9 mg tablets also contain FD&C Blue No. 1 Aluminum Lake and polyvinyl alcohol. The imprinting ink contains the following: black iron oxide, hypromellose and propylene glycol. Delivery System Components and Performance Paliperidone extended-release uses osmotic pressure to deliver paliperidone at a controlled rate. The delivery system, which resembles a capsule-shaped tablet in appearance, consists of an osmotically active trilayer core surrounded by a subcoat and semipermeable membrane. The trilayer core is composed of two drug layers containing the drug and excipients, and a push layer containing osmotically active components. There are two precision laser-drilled orifices on the drug-layer dome of the tablet. Each tablet strength has a different colored water-dispersible overcoat and print markings. In an aqueous environment, such as the gastrointestinal tract, the water-dispersible color overcoat erodes quickly. Water then enters the tablet through the semipermeable membrane that controls the rate at which water enters the tablet core, which, in turn, determines the rate of drug delivery. The hydrophilic polymers of the core hydrate and swell, creating a gel containing paliperidone that is then pushed out through the tablet orifices. 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. description

Paliperidone extended-release tablets contains paliperidone USP, an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. Paliperidone, USP contains a racemic mixture of (+)- and (-)- paliperidone. The chemical name is (±)-3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one. Its molecular formula is C 23 H 27 FN 4 O 3 and its molecular weight is 426.49. The structural formula is: Paliperidone, USP is sparingly soluble in 0.1N HCl and methylene chloride; practically insoluble in water, 0.1N NaOH, and hexane; and slightly soluble in N,N-dimethylformamide. Paliperidone extended-release tablets are intended for oral administration and are available in 1.5 mg (brown), 3 mg (white), 6 mg (light beige), and 9 mg (pink) strengths. Inactive ingredients are colloidal silicon dioxide, fumaric acid, hypromellose, lactose monohydrate, macrogol, magnesium stearate, methacrylic acid copolymer, microcrystalline cellulose, polyethylene oxides, povidone, talc and triethyl citrate. The 1.5 mg tablets also contain iron oxide black, iron oxide red and iron oxide yellow. The 6 mg tablets also contain iron oxide red and iron oxide yellow. The 9 mg tablets also contain iron oxide black, iron oxide red and iron oxide yellow. Delivery System Components and Performance Paliperidone extended-release tablets use a hydrophilic matrix core and pH dependent enteric coating to deliver paliperidone, USP at a controlled rate. The delivery system consists of an inner core composed of the drug, rate controlling polymers and other excipients. The core is coated with multiple layers comprising of delayed release polymer and a drug layering polymer system. Each tablet strength has a different colored coating. In an aqueous environment, such as the gastrointestinal tract, the water-dispersible overcoat erodes quickly. The combination of the coating layers ensures an initial drug release, while delaying exposure of the matrix core. Upon attaining the intended pH, the delayed release coating dissolves, the hydrophilic polymers of the core hydrate and swell forming a gel like barrier that regulates the rate at which the drug is released from the tablet, ensuring a steady and prolonged delivery.

Paliperidone extended-release tablets contain paliperidone, an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. Paliperidone contains a racemic mixture of (+)- and (-)- paliperidone. The chemical name is (±)-3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one. Its molecular formula is C 23 H 27 FN 4 O 3 and its molecular weight is 426.49. The structural formula is: Paliperidone is sparingly soluble in 0.1N HCl and methylene chloride; practically insoluble in water, 0.1N NaOH, and hexane; and slightly soluble in N,N-dimethylformamide. Paliperidone extended-release tablets are intended for oral administration and are available in 1.5 mg (orange-brown), 3 mg (white), 6 mg (beige), and 9 mg (pink) strengths. Paliperidone extended-release tablets utilize coated matrix drug-release technology . Inactive ingredients are butylated hydroxytoluene, carbomer homopolymer, colloidal silicon dioxide, dibutyl sebacate, ethyl cellulose, hypromellose phthalate, magnesium stearate, microcrystalline cellulose, polyethylene oxides, talc, titanium dioxide. The 1.5 mg and 6 mg tablets also contain ferric oxide yellow and ferric oxide red. The 9 mg tablets contain ferric oxide red. Delivery System Components and Performance Paliperidone extended-release tablets uses coated matrix formulation to deliver paliperidone at a controlled rate. The delivery system which resembles the round shape tablet in appearance consists of active in a core surrounded by a semipermeable membrane. The matrix core is composed of the drug, release controlling polymers and excipients. The semipermeable membrane surrounding the core consists of polymers. Each tablet strength has a different colorant and printing markings. In an aqueous environment, such as the gastrointestinal tract, aqueous fluid enters the tablets core through semipermeable membrane that controls the rate at which aqueous medium enters the tablet core, which in turn determine the lag of drug delivery. The hydrophilic polymers of the core hydrates, swells, creating a gel containing paliperidone which in turn determine the rate of drug delivery. structure

Paliperidone extended-release tablets contain paliperidone, an atypical antipsychotic belonging to the chemical class of benzisoxazole derivatives. Paliperidone contains a racemic mixture of (+)- and (-)- paliperidone. The chemical name is (±)-3-[2-[4-(6-fluoro-1,2-benzisoxazol-3-yl)-1-piperidinyl]ethyl]-6,7,8,9-tetrahydro-9-hydroxy-2-methyl-4H-pyrido[1,2-a]pyrimidin-4-one. Its molecular formula is C 23 H 27 FN 4 O 3 and its molecular weight is 426.49. The structural formula is: Paliperidone is sparingly soluble in 0.1N HCl and methylene chloride; practically insoluble in water, 0.1N NaOH, and hexane; and slightly soluble in N,N-dimethylformamide. Paliperidone extended-release tablets are intended for oral administration and are available in 1.5 mg (brown), 3 mg (white), 6 mg (beige), and 9 mg (pink) strengths. Paliperidone extended-release tablets utilize OROS ® osmotic drug-release technology. Inactive ingredients are butylated hydroxytoluene, cellulose acetate, ferric oxide red, hydroxypropyl cellulose, hypromellose, polyethylene glycol, polyethylene oxides, povidone, stearic acid and sodium chloride. The film coating of 1.5 mg and 6 mg tablets contains ferric oxide red, ferric oxide yellow, ferrosoferric oxide, hypromellose, polyethylene glycol and titanium dioxide. The film coating of 3 mg tablets contains lactose monohydrate, hypromellose, titanium dioxide and triacetin. The film coating of 9 mg tablets contains ferric oxide red, hypromellose, polyethylene glycol and titanium dioxide. The imprinting ink contains ammonium hydroxide, ferrosoferric oxide, isopropyl alcohol, N-butyl alcohol, shellac glaze and propylene glycol. Delivery System Components and Performance Paliperidone extended-release tablets use osmotic pressure to deliver paliperidone at a controlled rate. The delivery system, which resembles a capsule-shaped tablet in appearance, consists of an osmotically active trilayer core surrounded by a subcoat and semipermeable membrane. The trilayer core is composed of two drug layers containing the drug and excipients, and a push layer containing osmotically active components. There is one precision laser-drilled orifice on the drug-layer dome of the tablet. Each tablet strength has a different colored water-dispersible overcoat and print markings. In an aqueous environment, such as the gastrointestinal tract, the water-dispersible color overcoat erodes quickly. Water then enters the tablet through the semipermeable membrane that controls the rate at which water enters the tablet core, which, in turn, determines the rate of drug delivery. The hydrophilic polymers of the core hydrate and swell, creating a gel containing paliperidone that is then pushed out through the tablet orifice. 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. chem draw structure