Abstract: A composition and method are disclosed for treating orgasmic disorder in a female subject. The composition is a topical medicament containing tadalafil, menthol, and 1-arginine. The composition typically further comprises an extended release mucoadhesive polymer, and is used for topical application to the clitoris and genital tissues of a human female suffering from orgasmic disorder, which includes difficulty achieving orgasm and anorgasmia. Topical application of the inventive composition to the clitoral mucous membranes and other female genital tissues affects vasodilation and clitoral erection tier an extended period of time and compensates for low testosterone levels in a female subject.