SPL Set ID: 4be76756-4114-4d50-a36c-fd410f6c773d

Amlodipine and atorvastatin tablets, USP combine the calcium channel blocker amlodipine besylate with the HMG-CoA-reductase inhibitor atorvastatin calcium. Amlodipine besylate is chemically described as 3-ethyl 5-methyl (4 RS )-2-[(2-aminoethoxy) methyl]-4-(2-chlorophenyl)-6-methyl-1,4-dihydropyridine-3,5-dicarboxylate benzenesulfonate. Its emperical formula is C 20 H 25 ClN 2 O 5 •C 6 H 6 O 3 S. Atorvastatin calcium is chemically described as Calcium ( βR , δR )-2-( p -fluorophenyl)- β , δ -dihydroxy-5-isopropyl-3-phenyl-4-(phenylcarbamoyl)pyrrole-1-heptanoate (1:2), trihydrate. Its emperical formula is C 66 H 68 CaF 2 N 4 O 10 •3H 2 O. The structural formulae for amlodipine besylate and atorvastatin calcium are shown below. Amlodipine and atorvastatin tablets contain amlodipine besylate USP, a white or almost white powder, and atorvastatin calcium USP, a white to off-white crystalline powder. Amlodipine besylate has a molecular weight of 567.1 and atorvastatin calcium has a molecular weight of 1209.42. Amlodipine besylate is slightly soluble in water and sparingly soluble in ethanol. Atorvastatin calcium is insoluble in aqueous solutions of pH 4 and below. Atorvastatin calcium is very slightly soluble in distilled water, pH 7.4 phosphate buffer, and acetonitrile; slightly soluble in ethanol; and freely soluble in methanol. Amlodipine and atorvastatin tablets are available as film-coated tablets containing: • 5 mg amlodipine equivalent to 6.94 mg amlodipine besylate and 10 mg atorvastatin equivalent to 10.844 mg atorvastatin calcium. • 5 mg amlodipine equivalent to 6.94 mg amlodipine besylate and 20 mg atorvastatin equivalent to 21.688 mg atorvastatin calcium. • 5 mg amlodipine equivalent to 6.94 mg amlodipine besylate and 40 mg atorvastatin equivalent to 43.376 mg atorvastatin calcium. • 5 mg amlodipine equivalent to 6.94 mg amlodipine besylate and 80 mg atorvastatin equivalent to 86.751 mg atorvastatin calcium. • 10 mg amlodipine equivalent to 13.88 mg amlodipine besylate and 10 mg atorvastatin equivalent to 10.844 mg atorvastatin calcium. • 10 mg amlodipine equivalent to 13.88 mg amlodipine besylate and 20 mg atorvastatin equivalent to 21.688 mg atorvastatin calcium. • 10 mg amlodipine equivalent to 13.88 mg amlodipine besylate and 40 mg atorvastatin equivalent to 43.376 mg atorvastatin calcium. • 10 mg amlodipine equivalent to 13.88 mg amlodipine besylate and 80 mg atorvastatin equivalent to 86.751 mg atorvastatin calcium. Each film-coated tablet also contains colloidal silicon dioxide, croscarmellose sodium, hydroxypropyl cellulose, L-arginine, lecithin, magnesium stearate, microcrystalline cellulose, polyvinyl alcohol, pregelatinized starch (corn), sodium carbonate anhydrous, talc, titanium dioxide and xanthan gum. The 10 mg/10 mg, 10 mg/20 mg, 10 mg/40 mg and 10 mg/80 mg tablets also contain FD&C Blue No. 2 Aluminum Lake. Atorvastatin Calcium Meets USP Organic Impurities Procedure 2. Amlodipine Besylate and Atorvastatin Calcium Structural Formulae