Active Ingredient(s): Lidocaine HCl, 2.46%. Contains benzethonium chloride, allantoin, together with denatonium benzoate (Bitrex), aloe vera, and lanolin in a non-stinging, non-sticky liquid base with normal skin pH. HEXA-CAINE contains Bitrex to stop fur and wound biting. Indications: Helps relieve itching and pain. Aids in the treatment of minor skin problems. Safe for puppies and kittens 6 weeks or older.