SPL Set ID: db4d83b8-3ce7-433e-b32a-a8dc2f44b909

Amitriptyline hydrochloride, USP, a dibenzocycloheptadiene derivative, is a white, or practically white, odorless, crystalline compound which is freely soluble in water and alcohol. It is designated chemically as 10,11-Dihydro-N,N-dimethyl-5 H -dibenzo[a,d] cycloheptene-Δ 5 , γ-propylamine hydrochloride. It has the following structural formula: C 20 H 23 N∙HCl M.W. 313.87 Amitriptyline hydrochloride, USP is supplied as 10, 25, 50, 75, 100 and 150 mg tablets. The inactive ingredients are croscarmellose sodium, magnesium stearate and silicified microcrystalline cellulose. The tablet coating ingredients are polyvinyl alcohol, polyethylene glycol, talc and titanium dioxide. In addition, the tablet coating also contains: 10 mg – D&C Red No. 27 Aluminum Lake, FD&C Yellow No. 6 Aluminum Lake and FD&C Blue No. 2 Aluminum Lake. 25 mg – FD&C Blue No. 1 Aluminum Lake, FD&C Red No. 40 Aluminum Lake, FD&C Yellow No. 5 (tartrazine) Aluminum Lake and FD&C Yellow No. 6 Aluminum Lake. 50 mg – FD&C Yellow No. 6 Aluminum Lake, FD&C Red No. 40 Aluminum Lake and FD&C Blue No. 1 Aluminum Lake. 75 mg – D&C Red No. 7 Calcium Lake and FD&C Blue No. 1 Aluminum Lake. 100 mg – FD&C Yellow No. 6 Aluminum Lake, FD&C Red No. 40 Aluminum Lake, red iron oxide and yellow iron oxide. 150 mg – FD&C Blue No. 1 Aluminum Lake, FD&C Yellow No. 5 (tartrazine) Aluminum Lake, FD&C Red No. 40 Aluminum Lake and FD&C Yellow No. 6 Aluminum Lake.