Drugs Similar to PRAZOSIN HCL

Prazosin hydrochloride USP, a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7-dimethoxy 2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: [Chemical Structure] Molecular Formula: C19H21N5O4•HCl It is white to tan powder, slightly soluble in water, in methanol, in dimethyl formamide, in dimethyl acetamide, very slightly soluble in alcohol, practically insoluble in isotonic saline, in chloroform and in acetone and has a molecular weight of 419.86. Each capsule, for oral administration, contains prazosin hydrochloride, USP equivalent (as the polyhydrate) to 1 mg, 2 mg or 5 mg of prazosin. Inert ingredients in the formulations are: colloidal silicon dioxide, lactose monohydrate, magnesium stearate, microcrystalline cellulose and sodium lauryl sulfate. The hard gelatin capsules contain gelatin and titanium dioxide. In addition, the 2 mg empty gelatin capsules contain FD&C Red No. 40, FD&C Red No. 3 and FD&C Blue No. 1; and the 5 mg empty gelatin capsules contain FD&C Red 3 and FD&C Blue No. 1. The imprinting ink also contains Black Iron Oxide, Potassium Hydroxide, Shellac. FDA approved dissolution test specifications differ from USP.

Prazosin hydrochloride USP, a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7-dimethoxy 2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: [Chemical Structure] Molecular Formula: C19H21N5O4•HCl It is white to tan powder, slightly soluble in water, in methanol, in dimethyl formamide, in dimethyl acetamide, very slightly soluble in alcohol, practically insoluble in isotonic saline, in chloroform and in acetone and has a molecular weight of 419.86. Each capsule, for oral administration, contains prazosin hydrochloride, USP equivalent (as the polyhydrate) to 1 mg, 2 mg or 5 mg of prazosin. Inert ingredients in the formulations are: colloidal silicon dioxide, lactose monohydrate, magnesium stearate, microcrystalline cellulose and sodium lauryl sulfate. The hard gelatin capsules contain gelatin and titanium dioxide. In addition, the 2 mg empty gelatin capsules contain FD&C Red No. 40, FD&C Red No. 3 and FD&C Blue No. 1; and the 5 mg empty gelatin capsules contain FD&C Red 3 and FD&C Blue No. 1. The imprinting ink also contains Black Iron Oxide, Potassium Hydroxide, Shellac. FDA approved dissolution test specifications differ from USP.

Prazosin hydrochloride USP, a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7-dimethoxy 2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: [Chemical Structure] Molecular Formula: C19H21N5O4•HCl It is white to tan powder, slightly soluble in water, in methanol, in dimethyl formamide, in dimethyl acetamide, very slightly soluble in alcohol, practically insoluble in isotonic saline, in chloroform and in acetone and has a molecular weight of 419.86. Each capsule, for oral administration, contains prazosin hydrochloride, USP equivalent (as the polyhydrate) to 1 mg, 2 mg or 5 mg of prazosin. Inert ingredients in the formulations are: colloidal silicon dioxide, lactose monohydrate, magnesium stearate, microcrystalline cellulose and sodium lauryl sulfate. The hard gelatin capsules contain gelatin and titanium dioxide. In addition, the 2 mg empty gelatin capsules contain FD&C Red No. 40, FD&C Red No. 3 and FD&C Blue No. 1; and the 5 mg empty gelatin capsules contain FD&C Red 3 and FD&C Blue No. 1. The imprinting ink also contains Black Iron Oxide, Potassium Hydroxide, Shellac. FDA approved dissolution test specifications differ from USP.

Prazosin hydrochloride USP, a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7-dimethoxy 2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: [Chemical Structure] Molecular Formula: C19H21N5O4•HCl It is white to tan powder, slightly soluble in water, in methanol, in dimethyl formamide, in dimethyl acetamide, very slightly soluble in alcohol, practically insoluble in isotonic saline, in chloroform and in acetone and has a molecular weight of 419.86. Each capsule, for oral administration, contains prazosin hydrochloride, USP equivalent (as the polyhydrate) to 1 mg, 2 mg or 5 mg of prazosin. Inert ingredients in the formulations are: colloidal silicon dioxide, lactose monohydrate, magnesium stearate, microcrystalline cellulose and sodium lauryl sulfate. The hard gelatin capsules contain gelatin and titanium dioxide. In addition, the 2 mg empty gelatin capsules contain FD&C Red No. 40, FD&C Red No. 3 and FD&C Blue No. 1; and the 5 mg empty gelatin capsules contain FD&C Red 3 and FD&C Blue No. 1. The imprinting ink also contains Black Iron Oxide, Potassium Hydroxide, Shellac. FDA approved dissolution test specifications differ from USP.

Prazosin Hydrochloride Capsules, USP, a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7-dimethoxy­-2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: Molecular formula C 19 H 21 N 5 O 4 •HCl It is a white, crystalline substance, slightly soluble in water and isotonic saline, and has a molecular weight of 419.87. Each 1 mg capsule of prazosin hydrochloride for oral use contains drug equivalent to 1 mg free base. Inert ingredients in the formulations are: hard gelatin capsules (which may contain alcohol, black iron oxide, butyl alcohol, D&C Red No. 33, D&C Yellow No. 10, FD&C Blue No. 1, FD&C Blue No. 2, FD&C Red No. 40, gelatin, propylene glycol, shellac, titanium dioxide); lactose anhydrous; lactose monohydrate; magnesium stearate; pregelatinized starch 1500. FDA approved dissolution test specifications differ from USP. Chemical Structure

Prazosin hydrochloride USP, a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7-dimethoxy 2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: [Chemical Structure] Molecular Formula: C19H21N5O4•HCl It is white to tan powder, slightly soluble in water, in methanol, in dimethyl formamide, in dimethyl acetamide, very slightly soluble in alcohol, practically insoluble in isotonic saline, in chloroform and in acetone and has a molecular weight of 419.86. Each capsule, for oral administration, contains prazosin hydrochloride, USP equivalent (as the polyhydrate) to 1 mg, 2 mg or 5 mg of prazosin. Inert ingredients in the formulations are: colloidal silicon dioxide, lactose monohydrate, magnesium stearate, microcrystalline cellulose and sodium lauryl sulfate. The hard gelatin capsules contain gelatin and titanium dioxide. In addition, the 2 mg empty gelatin capsules contain FD&C Red No. 40, FD&C Red No. 3 and FD&C Blue No. 1; and the 5 mg empty gelatin capsules contain FD&C Red 3 and FD&C Blue No. 1. The imprinting ink also contains Black Iron Oxide, Potassium Hydroxide, Shellac. FDA approved dissolution test specifications differ from USP.

Prazosin hydrochloride USP, a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7-dimethoxy 2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: [Chemical Structure] Molecular Formula: C19H21N5O4•HCl It is white to tan powder, slightly soluble in water, in methanol, in dimethyl formamide, in dimethyl acetamide, very slightly soluble in alcohol, practically insoluble in isotonic saline, in chloroform and in acetone and has a molecular weight of 419.86. Each capsule, for oral administration, contains prazosin hydrochloride, USP equivalent (as the polyhydrate) to 1 mg, 2 mg or 5 mg of prazosin. Inert ingredients in the formulations are: colloidal silicon dioxide, lactose monohydrate, magnesium stearate, microcrystalline cellulose and sodium lauryl sulfate. The hard gelatin capsules contain gelatin and titanium dioxide. In addition, the 2 mg empty gelatin capsules contain FD&C Red No. 40, FD&C Red No. 3 and FD&C Blue No. 1; and the 5 mg empty gelatin capsules contain FD&C Red 3 and FD&C Blue No. 1. The imprinting ink also contains Black Iron Oxide, Potassium Hydroxide, Shellac. FDA approved dissolution test specifications differ from USP.

Prazosin hydrochloride capsules, USP a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7-dimethoxy-2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: Molecular formula C 19 H 21 N 5 O 4 • HCl It is a white to tan powder, slightly soluble in water and methanol, very slightly soluble in alcohol, practically insoluble in chloroform and acetone and has a molecular weight of 419.87. Each capsule, for oral use, contains prazosin hydrochloride, USP equivalent (as the polyhydrate) to 1 mg, 2 mg or 5 mg of prazosin. Inert ingredients in the formulations are: colloidal silicon dioxide, lactose monohydrate, magnesium stearate and microcrystalline cellulose. The empty gelatin capsules contain black iron oxide, gelatin, red iron oxide, titanium dioxide and yellow iron oxide. In addition, the 1 mg empty gelatin capsules contain D&C Yellow No. 10 and FD&C Green No. 3; the 2 mg empty gelatin capsules contain D&C Red No. 28, D&C Yellow No. 10, FD&C Blue No. 1 and FD&C Red No. 40; and the 5 mg empty gelatin capsules contain FD&C Blue No. 1. The imprinting ink also contains ammonium hydroxide, propylene glycol, shellac glaze, simethicone and titanium dioxide. Prazosin Hydrochloride Structural Formula

Prazosin hydrochloride USP, a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7-dimethoxy 2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: Molecular Formula: C 19 H 21 N 5 O 4• HCl It is white to tan powder, slightly soluble in water, in methanol, in dimethyl formamide, in dimethyl acetamide, very slightly soluble in alcohol, practically insoluble in isotonic saline, in chloroform and in acetone and has a molecular weight of 419.86. Each capsule, for oral administration, contains prazosin hydrochloride, USP equivalent (as the polyhydrate) to 1 mg, 2 mg or 5 mg of prazosin. Inert ingredients in the formulations are: colloidal silicon dioxide, lactose monohydrate, magnesium stearate, microcrystalline cellulose and sodium lauryl sulfate. The hard gelatin capsules contain gelatin and titanium dioxide. In addition, the 2 mg empty gelatin capsules contain FD&C Red No. 40, FD&C Red No. 3 and FD&C Blue No. 1; and the 5 mg empty gelatin capsules contain FD&C Red 3 and FD&C Blue No. 1. The imprinting ink also contains Black Iron Oxide, Potassium Hydroxide, Shellac. FDA approved dissolution test specifications differ from USP.

Prazosin hydrochloride, USP a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7-dimethoxy-2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: Molecular formula C 19 H 21 N 5 O 4 •HCl It is a white to tan powder, slightly soluble in water, practically insoluble in chloroform and acetone and has a molecular weight of 419.87. Each capsule, for oral administration, contains prazosin hydrochloride, USP equivalent (as the polyhydrate) to 1 mg, 2 mg or 5 mg of prazosin. Inert ingredients in the formulations are: colloidal silicon dioxide, lactose monohydrate, lactose anhydrous, magnesium stearate and microcrystalline cellulose. The empty hard gelatin capsules contain black iron oxide, gelatin, red iron oxide, titanium dioxide and yellow iron oxide. In addition, the 1 mg empty gelatin capsules contain D&C Yellow No. 10 and FD&C Green No. 3; the 2 mg empty gelatin capsules contain D&C Red No. 28, D&C Yellow No. 10, FD&C Blue No. 1 and FD&C Red No. 40; and the 5 mg empty gelatin capsules contain FD&C Blue No. 1. The capsules shells are imprinted in edible ink which contains concentrated ammonium solution, potassium hydroxide, propylene glycol, shellac and titanium dioxide. Prazosin Structure

Prazosin hydrochloride, USP a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7-dimethoxy-2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: C 19 H 21 N 5 O 4 •HCl M.W. 419.87 It is a white, crystalline substance, slightly soluble in water and isotonic saline. Each capsule for oral administration, contains prazosin hydrochloride, USP equivalent to 1 mg, 2 mg or 5 mg of prazosin. Inactive ingredients include: anhydrous lactose, magnesium stearate, and pregelatinized starch. Additional inactive ingredients for the gelatin capsule include: 1 mg (Ivory): D&C Yellow No. 10 and titanium dioxide; 2 mg (Pink): FD&C Blue No. 1, FD&C Red No. 40, D&C Red No. 28, and titanium dioxide; 5 mg (Light Blue): FD&C Blue No. 1 and titanium dioxide. Structural Formula

Prazosin hydrochloride USP, a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7-dimethoxy 2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: Molecular Formula: C 19 H 21 N 5 O 4• HCl It is white to tan powder, slightly soluble in water, in methanol, in dimethyl formamide, in dimethyl acetamide, very slightly soluble in alcohol, practically insoluble in isotonic saline, in chloroform and in acetone and has a molecular weight of 419.86. Each capsule, for oral administration, contains prazosin hydrochloride, USP equivalent (as the polyhydrate) to 1 mg, 2 mg or 5 mg of prazosin. Inert ingredients in the formulations are: colloidal silicon dioxide, lactose monohydrate, magnesium stearate, microcrystalline cellulose and sodium lauryl sulfate. The hard gelatin capsules contain gelatin and titanium dioxide. In addition, the 2 mg empty gelatin capsules contain FD&C Red No. 40, FD&C Red No. 3 and FD&C Blue No. 1; and the 5 mg empty gelatin capsules contain FD&C Red 3 and FD&C Blue No. 1. The imprinting ink also contains Black Iron Oxide, Potassium Hydroxide, Shellac. FDA approved dissolution test specifications differ from USP.

Prazosin hydrochloride, USP a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7-dimethoxy-2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: Molecular formula C 19 H 21 N 5 O 4 •HCl It is a white to tan powder, slightly soluble in water, practically insoluble in chloroform and acetone and has a molecular weight of 419.87. Each capsule, for oral administration, contains prazosin hydrochloride, USP equivalent (as the polyhydrate) to 1 mg, 2 mg or 5 mg of prazosin. Inert ingredients in the formulations are: colloidal silicon dioxide, lactose monohydrate, lactose anhydrous, magnesium stearate and microcrystalline cellulose. The empty hard gelatin capsules contain black iron oxide, gelatin, red iron oxide, titanium dioxide and yellow iron oxide. In addition, the 1 mg empty gelatin capsules contain D&C Yellow No. 10 and FD&C Green No. 3; the 2 mg empty gelatin capsules contain D&C Red No. 28, D&C Yellow No. 10, FD&C Blue No. 1 and FD&C Red No. 40; and the 5 mg empty gelatin capsules contain FD&C Blue No. 1. The capsules shells are imprinted in edible ink which contains concentrated ammonium solution, potassium hydroxide, propylene glycol, shellac and titanium dioxide. Prazosin Structure

Prazosin hydrochloride capsules, USP a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7-dimethoxy-2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: Molecular formula C 19 H 21 N 5 O 4 •HCl It is white or almost white crystalline powder, very slightly soluble in water, slightly soluble in methanol, in dimethylformamide, in dimethylacetamide and in alcohol; practically insoluble in chloroform and in acetone, and has a molecular weight of 419.87. Each capsule, for oral use, contains prazosin hydrochloride, USP equivalent to 1 mg, 2 mg or 5 mg of prazosin. Inert ingredients in the formulations are: colloidal silicon dioxide, magnesium stearate, sodium starch glycolate, sucrose. The empty hard gelatin capsule shells contain gelatin and titanium dioxide. In addition, the 2 mg and 5 mg empty hard gelatin capsule shells contains D&C Red 28, FD&C Blue 1, FD&C Red 3 and FD&C Red 40. The Imprint ink contains black iron oxide, potassium hydroxide, propylene glycol and shellac. FDA approved dissolution test specifications differ from USP. structure

Prazosin hydrochloride capsules, USP a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7-dimethoxy-2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: It is a white to tan powder, slightly soluble in water and methanol, very slightly soluble in alcohol, practically insoluble in chloroform and acetone and has a molecular weight of 419.87. Each capsule, for oral use, contains prazosin hydrochloride, USP equivalent (as the polyhydrate) to 1 mg, 2 mg or 5 mg of prazosin. Molecular formula C 19 H 21 N 5 O 4 • HCl Inert ingredients in the formulations are: colloidal silicon dioxide, lactose monohydrate, magnesium stearate and microcrystalline cellulose. The empty gelatin capsules contain black iron oxide, gelatin, red iron oxide, titanium dioxide and yellow iron oxide. In addition, the 1 mg empty gelatin capsules contain D&C Yellow No. 10 and FD&C Green No. 3; the 2 mg empty gelatin capsules contain D&C Red No. 28, D&C Yellow No. 10, FD&C Blue No. 1 and FD&C Red No. 40; and the 5 mg empty gelatin capsules contain FD&C Blue No. 1. The imprinting ink also contains ammonium hydroxide, propylene glycol, shellac glaze, simethicone and titanium dioxide. Prazosin HCl Molecular Formula

Prazosin hydrochloride, USP a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7-dimethoxy-2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: Molecular formula C 19 H 21 N 5 O 4 •HCl It is a white to tan powder, slightly soluble in water, practically insoluble in chloroform and acetone and has a molecular weight of 419.87. Each capsule, for oral administration, contains prazosin hydrochloride, USP equivalent (as the polyhydrate) to 1 mg, 2 mg or 5 mg of prazosin. Inert ingredients in the formulations are: colloidal silicon dioxide, lactose monohydrate, lactose anhydrous, magnesium stearate and microcrystalline cellulose. The empty hard gelatin capsules contain black iron oxide, gelatin, red iron oxide, titanium dioxide and yellow iron oxide. In addition, the 1 mg empty gelatin capsules contain D&C Yellow No. 10 and FD&C Green No. 3; the 2 mg empty gelatin capsules contain D&C Red No. 28, D&C Yellow No. 10, FD&C Blue No. 1 and FD&C Red No. 40; and the 5 mg empty gelatin capsules contain FD&C Blue No. 1. The capsules shells are imprinted in edible ink which contains concentrated ammonium solution, potassium hydroxide, propylene glycol, shellac and titanium dioxide. Prazosin Structure

Prazosin hydrochloride capsules, USP a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7-dimethoxy-2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: Molecular formula C 19 H 21 N 5 O 4 • HCl It is a white to tan powder, slightly soluble in water and methanol, very slightly soluble in alcohol, practically insoluble in chloroform and acetone and has a molecular weight of 419.87. Each capsule, for oral use, contains prazosin hydrochloride, USP equivalent (as the polyhydrate) to 1 mg, 2 mg or 5 mg of prazosin. Inert ingredients in the formulations are: colloidal silicon dioxide, lactose monohydrate, magnesium stearate and microcrystalline cellulose. The empty gelatin capsules contain black iron oxide, gelatin, red iron oxide, titanium dioxide and yellow iron oxide. In addition, the 1 mg empty gelatin capsules contain D&C Yellow No. 10 and FD&C Green No. 3; the 2 mg empty gelatin capsules contain D&C Red No. 28, D&C Yellow No. 10, FD&C Blue No. 1 and FD&C Red No. 40; and the 5 mg empty gelatin capsules contain FD&C Blue No. 1. The imprinting ink also contains ammonium hydroxide, propylene glycol, shellac glaze, simethicone and titanium dioxide.

Prazosin hydrochloride, USP a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7-dimethoxy-2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: C 19 H 21 N 5 O 4 •HCl M.W. 419.87 It is a white, crystalline substance, slightly soluble in water and isotonic saline. Each capsule for oral administration, contains prazosin hydrochloride, USP equivalent to 1 mg, 2 mg or 5 mg of prazosin. Inactive ingredients include: anhydrous lactose, magnesium stearate, and pregelatinized starch. Additional inactive ingredients for the gelatin capsule include: 1 mg (Ivory): D&C Yellow No. 10 and titanium dioxide; 2 mg (Pink): FD&C Blue No. 1, FD&C Red No. 40, D&C Red No. 28, and titanium dioxide; 5 mg (Light Blue): FD&C Blue No. 1 and titanium dioxide. prazosin hydrochloride capsules structural formula

Prazosin hydrochloride, USP a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7-dimethoxy-2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: C 19 H 21 N 5 O 4 •HCl M.W. 419.87 It is a white, crystalline substance, slightly soluble in water and isotonic saline. Each capsule for oral administration, contains prazosin hydrochloride, USP equivalent to 1 mg, 2 mg or 5 mg of prazosin. Inactive ingredients include: anhydrous lactose, magnesium stearate, and pregelatinized starch. Additional inactive ingredients for the gelatin capsule include: 1 mg (Ivory): D&C Yellow No. 10 and titanium dioxide; 2 mg (Pink): FD&C Blue No. 1, FD&C Red No. 40, D&C Red No. 28, and titanium dioxide; 5 mg (Light Blue): FD&C Blue No. 1 and titanium dioxide. Structural Formula

Prazosin hydrochloride USP, a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7-dimethoxy 2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: Molecular Formula: C 19 H 21 N 5 O 4• HCl It is white to tan powder, slightly soluble in water, in methanol, in dimethyl formamide, in dimethyl acetamide, very slightly soluble in alcohol, practically insoluble in isotonic saline, in chloroform and in acetone and has a molecular weight of 419.86. Each capsule, for oral administration, contains prazosin hydrochloride, USP equivalent (as the polyhydrate) to 1 mg, 2 mg or 5 mg of prazosin. Inert ingredients in the formulations are: colloidal silicon dioxide, lactose monohydrate, magnesium stearate, microcrystalline cellulose and sodium lauryl sulfate. The hard gelatin capsules contain gelatin and titanium dioxide. In addition, the 2 mg empty gelatin capsules contain FD&C Red No. 40, FD&C Red No. 3 and FD&C Blue No. 1; and the 5 mg empty gelatin capsules contain FD&C Red 3 and FD&C Blue No. 1. The imprinting ink also contains Black Iron Oxide, Potassium Hydroxide, Shellac. FDA approved dissolution test specifications differ from USP. Chemical Structure

Prazosin hydrochloride capsules, USP a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7-dimethoxy-2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: Molecular formula C 19 H 21 N 5 O 4 •HCl It is white or almost white crystalline powder, very slightly soluble in water, slightly soluble in methanol, in dimethylformamide, in dimethylacetamide and in alcohol; practically insoluble in chloroform and in acetone, and has a molecular weight of 419.87. Each capsule, for oral use, contains prazosin hydrochloride, USP equivalent to 1 mg, 2 mg or 5 mg of prazosin. Inert ingredients in the formulations are: colloidal silicon dioxide, magnesium stearate, sodium starch glycolate, sucrose. The empty hard gelatin capsule shells contain gelatin and titanium dioxide. In addition, the 2 mg and 5 mg empty hard gelatin capsule shells contains D&C Red 28, FD&C Blue 1, FD&C Red 3 and FD&C Red 40. The Imprint ink contains black iron oxide, potassium hydroxide, propylene glycol and shellac. FDA approved dissolution test specifications differ from USP. structure

Prazosin hydrochloride USP, a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7-dimethoxy 2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: Molecular Formula: C 19 H 21 N 5 O 4• HCl It is white to tan powder, slightly soluble in water, in methanol, in dimethyl formamide, in dimethyl acetamide, very slightly soluble in alcohol, practically insoluble in isotonic saline, in chloroform and in acetone and has a molecular weight of 419.86. Each capsule, for oral administration, contains prazosin hydrochloride, USP equivalent (as the polyhydrate) to 1 mg, 2 mg or 5 mg of prazosin. Inert ingredients in the formulations are: colloidal silicon dioxide, lactose monohydrate, magnesium stearate, microcrystalline cellulose and sodium lauryl sulfate. The hard gelatin capsules contain gelatin and titanium dioxide. In addition, the 2 mg empty gelatin capsules contain FD&C Red No. 40, FD&C Red No. 3 and FD&C Blue No. 1; and the 5 mg empty gelatin capsules contain FD&C Red 3 and FD&C Blue No. 1. The imprinting ink also contains Black Iron Oxide, Potassium Hydroxide, Shellac. FDA approved dissolution test specifications differ from USP. Chemical Structure

Prazosin hydrochloride, a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6, 7-dimethoxy-2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: Molecular formula C 19 H 21 N 5 O 4 .HCl It is a white or almost white crystalline powder, very slightly soluble in water, slightly soluble in alcohol and methanol, practically insoluble in acetone and has a molecular weight of 419.87. Each 1 mg capsule of prazosin hydrochloride USP, for oral use contains drug equivalent to 1 mg free base. Prazosin hydrochloride capsules USP contains the following inactive ingredients: corn starch, magnesium stearate, sodium lauryl sulfate, sucrose. The hard gelatin capsules contain gelatin and titanium dioxide. In addition, the 1 mg hard gelatin capsules contain D&C Yellow 10 and FD&C Yellow 6; the 2 mg hard gelatin capsules contain D&C Yellow 10, FD&C Blue 1, FD&C Red 3 and FD&C Yellow 6; the 5 mg hard gelatin capsules contains D&C Yellow 10, FD&C Blue 1, FD&C Red 3 and FD&C Yellow 6. The capsule shells are imprinted with black ink which contains black iron oxide, potassium hydroxide and shellac. FDA approved dissolution test specifications differ from USP. Chemical Structure

Prazosin hydrochloride, USP a quinazoline derivative, is the first of a new chemical class of antihypertensives. It is the hydrochloride salt of 1-(4-amino-6,7-dimethoxy-2-quinazolinyl)-4-(2-furoyl) piperazine and its structural formula is: C 19 H 21 N 5 O 4 •HCl M.W. 419.87 It is a white, crystalline substance, slightly soluble in water and isotonic saline. Each capsule for oral administration, contains prazosin hydrochloride, USP equivalent to 1 mg, 2 mg or 5 mg of prazosin. Inactive ingredients include: anhydrous lactose, magnesium stearate, and pregelatinized corn starch. Additional inactive ingredients for the gelatin capsule include: 1 mg (Ivory): D&C Yellow No. 10 and titanium dioxide; 2 mg (Pink): FD&C Blue No. 1, FD&C Red No. 40, D&C Red No. 28, and titanium dioxide; 5 mg (Light Blue): FD&C Blue No. 1 and titanium dioxide.