SPL Set ID: c1d4ef59-bf58-44fe-9b46-1af42e2f7f8b

Quetiapine tablets, USP are 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. The structural formula is: C 42 H 50 N 6 O 4 S 2 •C 4 H 4 O 4 M.W. 883.11 (fumarate salt) Quetiapine fumarate, USP 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 (round, light orange), 50 mg (round, white to off-white), 100 mg (round, light orange), 200 mg (round, white to off-white), 300 mg (capsule-shaped, pale yellow), and 400 mg (capsule-shaped, white to off-white) tablets. Inactive ingredients are colloidal silicon dioxide, dibasic calcium phosphate dihydrate, hypromellose, lactose monohydrate, magnesium stearate, microcrystalline cellulose, povidone, sodium starch glycolate, titanium dioxide and triacetin. Additionally, the 25 mg, 100 mg, and 300 mg tablets contain iron oxide yellow; the 25 mg and 100 mg tablets contain FD&C Yellow No. 6/Sunset Yellow FCF Aluminum Lake; and the 50 mg, 200 mg, and 400 mg tablets contain polydextrose and polyethylene glycol. Each 25 mg tablet contains 28.78 mg of quetiapine fumarate, USP equivalent to 25 mg quetiapine. Each 50 mg tablet contains 57.57 mg of quetiapine fumarate, USP equivalent to 50 mg quetiapine. Each 100 mg tablet contains 115.15 mg of quetiapine fumarate, USP equivalent to 100 mg quetiapine. Each 200 mg tablet contains 230.30 mg of quetiapine fumarate, USP equivalent to 200 mg quetiapine. Each 300 mg tablet contains 345.45 mg of quetiapine fumarate, USP equivalent to 300 mg quetiapine. Each 400 mg tablet contains 460.60 mg of quetiapine fumarate, USP equivalent to 400 mg quetiapine. quetiapine fumarate structural formula