SPL Set ID: b02324b1-e7f0-4cbc-8778-5f7c4a5d194a

Quetiapine fumarate 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 extended-release tablets are supplied for oral administration as 50 mg (peach to red), 150 mg (white), 200 mg (yellow), 300 mg (yellow to pale yellow), and 400 mg (white). All tablets are capsule shaped and film coated. Inactive ingredients for quetiapine extended-release tablets are hypromellose, hypromellose 2208, lactose monohydrate, magnesium stearate, microcrystalline cellulose and sodium citrate dihydrate. The film coating for all quetiapine extended-release tablets contain hypromellose 2910, macrogol and titanium dioxide. In addition, red iron oxide (for 50 mg) and yellow iron oxide (for 50 mg, 200 mg and 300 mg) are included in the film coating of specific strengths. Each 50 mg film-coated tablet contains 58 mg of quetiapine fumarate USP equivalent to 50 mg quetiapine. Each 150 mg film-coated tablet contains 173 mg of quetiapine fumarate USP equivalent to 150 mg quetiapine. Each 200 mg film-coated tablet contains 230 mg of quetiapine fumarate equivalent to 200 mg quetiapine. Each 300 mg film-coated tablet contains 345 mg of quetiapine fumarate equivalent to 300 mg quetiapine. Each 400 mg film-coated tablet contains 461 mg of quetiapine fumarate equivalent to 400 mg quetiapine. USP Dissolution Test Pending. Image