Corium's Anti-Itch Dual Action Gel by CoreTex. Stops the itch at its source by blocking the histamine that causes itch. Extra-strength anti-itch preparation with Diphenhydramine Hydrochloride and Zinc Acetate. Relieves both itching and pain associated with insect bites, minor skin irritations and rashes due to poison ivy, poison oak and poison sumac. Sold by the individual packet and 25-count dispenser box. Each individually wrapped foil packet contains 1 gram.