SPL Set ID: e04eea45-12ec-4d2b-e053-2a95a90a6b76

Cyclobenzaprine hydrochloride, USP is a white, crystalline tricyclic amine salt with the empirical formula C 20 H 21 N•HCl and a molecular weight of 311.9. It has a melting point of 217˚C, and a pK a of 8.47 at 25˚C. It is freely soluble in water and alcohol, sparingly soluble in isopropanol, and insoluble in hydrocarbon solvents. If aqueous solutions are made alkaline, the free base separates. Cyclobenzaprine HCl, USP is designated chemically as 3-( 5H –dibenzo[ a , d ]cyclohepten-5-ylidene)- N , N -dimethyl-1-propanamine hydrochloride, and has the following structural formula: Cyclobenzaprine HCl USP, 5 mg is supplied as a 5 mg tablet for oral administration. Cyclobenzaprine HCl USP, 10 mg is supplied as a 10 mg tablet for oral administration. Cyclobenzaprine HCl tablets USP, 5 mg contain the following inactive ingredients: lactose monohydrate, microcrystalline cellulose, pregelatinized starch, colloidal silicon dioxide, magnesium stearate and opadry beige (hypromellose 6cP, titanium dioxide, PEG 400, iron oxide yellow and iron oxide red). Cyclobenzaprine HCl tablets USP, 10 mg contain the following inactive ingredients: lactose monohydrate, microcrystalline cellulose, pregelatinized starch, colloidal silicon dioxide, magnesium stearate and opadry yellow (hypromellose 3cp, hypromellose 6cp, titanium dioxide, PEG 400, iron oxide yellow and polysorbate 80). Image