08/27/2021 Alembic launches generic Sinequan Alembic's generic Sinequan is used to treat psychoneurotic patients with depression or anxiety. Sandra Levy Senior Editor Alembic is rolling out doxepin hydrochloride capsules. The product is the generic of Sinequan. Doxepin hydrochloride capsules are used in the treatment of psychoneurotic patients with depression or anxiety. [Read more: Rolling with the punches: Generics firms innovate, expand scope to stay competitive] Alembic's product is available in five dosage strengths: 10 mg, 25 mg, 50 mg, 75 mg, and 100 mg. The product comes in 100-count bottles.