SPL Set ID: 227b8b2b-a238-efb4-e063-6394a90acc7e

Quetiapine is an atypical antipsychotic belonging to a chemical class, the dibenzothiazepine derivatives. The chemical designation is 2-[2-(4-dibenzo [b , f] [1,4]thiazepin-11-yl-1-piperazinyl)ethoxy]-ethanol fumarate (2:1) (salt). It is present in tablets as the fumarate salt. All doses and tablet strengths are expressed as milligrams of base, not as fumarate salt. Its molecular formula is C 42 H 50 N 6 O 4 S 2 . C 4 H 4 O 4 and it has a molecular weight of 883.11 (fumarate salt). The structural formula is: Quetiapine fumarate is a white to off-white crystalline powder which is moderately soluble in water. Quetiapine tablets USP are supplied for oral administration as 25 mg (quetiapine) round, pink tablets, 50 mg (quetiapine) round, white tablets, 100 mg (quetiapine) round, yellow tablets, 200 mg (quetiapine) round, white tablets, 300 mg (quetiapine) capsule-shaped, white tablets and 400 mg (quetiapine) capsule-shaped, yellow tablets. Inactive ingredients are dibasic calcium phosphate dihydrate, hypromellose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, polyethylene glycol, povidone, sodium starch glycolate and titanium dioxide. The 25 mg tablets contain iron oxide red and iron oxide black; and the 100 mg and 400 mg tablets contain iron oxide yellow. Each 25 mg film-coated tablet contains 28.78 mg of quetiapine fumarate USP equivalent to 25 mg quetiapine. Each 50 mg film-coated tablet contains 57.56 mg of quetiapine fumarate USP equivalent to 50 mg quetiapine. Each 100 mg film-coated tablet contains 115.12 mg of quetiapine fumarate USP equivalent to 100 mg quetiapine. Each 200 mg film-coated tablet contains 230.24 mg of quetiapine fumarate USP equivalent to 200 mg quetiapine. Each 300 mg film-coated tablet contains 345.36 mg of quetiapine fumarate USP equivalent to 300 mg quetiapine. Each 400 mg film-coated tablet contains 460.48 mg of quetiapine fumarate USP equivalent to 400 mg quetiapine. Molecular Structure