A tertiary amine that is N-methyl-1-naphthalenemethylamine in which the amino hydrogen is replaced by a 3-(tertbutylethynyl)allyl group. An antifungal agent administered orally (generally as the hydrochloride salt) for the treatment of skin and nail infections. ChEBI: Terbinafine is a tertiary amine that is N-methyl-1-naphthalenemethylamine in which the amino hydrogen is replaced by a 3-(tertbutylethynyl)allyl group. An antifungal agent administered orally (generally as the hydrochloride salt) for the treatment of skin and nail infections. It has a role as an EC 1.14.13.132 (squalene monooxygenase) inhibitor, a P450 inhibitor and a sterol biosynthesis inhibitor. It is a tertiary amine, an acetylenic compound, a member of naphthalenes, an enyne and an allylamine antifungal drug. It is a conjugate base of a terbinafine(1+).