SPL Set ID: 0c630a24-dc51-4601-a5d6-2f9e397a0449
1 drug(s) with this SPL Set ID
Carbidopa and levodopa tablets, USP are a combination of carbidopa and levodopa for the treatment of Parkinson's disease and syndrome. Carbidopa, USP an inhibitor of aromatic amino acid decarboxylation, is a white to creamy-white powder, slightly soluble in water, with a molecular weight of 244.24. It is designated chemically as (-)-L-α-hydrazino-3, 4-dihydroxy-α-methylhydrocinnamic acid monohydrate. Its empirical formula is C 10 H 14 N 2 O 4 •H 2 O, and its structural formula is: Tablet content is expressed in terms of anhydrous carbidopa which has a molecular weight of 226.24. Levodopa, USP an aromatic amino acid, is a white to off-white, crystalline powder, slightly soluble in water, with a molecular weight of 197.19. It is designated chemically as (2S)-2-Amino-3-(3,4-dihydroxyphenyl) propanoic acid. Its empirical formula is C 9 H 11 NO 4 , and its structural formula is: Carbidopa and levodopa is supplied as tablets in three strengths: Carbidopa and levodopa tablets, USP 10 mg/100 mg containing 10 mg of carbidopa USP and 100 mg of levodopa USP. Carbidopa and levodopa tablets, USP 25 mg/100 mg containing 25 mg of carbidopa USP and 100 mg of levodopa USP. Carbidopa and levodopa tablets, USP 25 mg/250 mg containing 25 mg of carbidopa USP and 250 mg of levodopa USP. Inactive ingredients are microcrystalline cellulose, pregelatinized starch (maize), crospovidone, hydroxypropyl cellulose and magnesium stearate. Carbidopa and levodopa tablets, USP 10 mg/100 mg and 25 mg/250 mg also contain FD&C Blue No.2. Carbidopa and levodopa tablets, USP 25 mg/100 mg also contain D&C Yellow No.10. FDA approved dissolution test specifications differ from USP. Carbidopa Structure Levodopa Structure