Pro-Sense® pet health and grooming solutions are developed with consumers and pets in mind. Our pet health experts specially select formulations to ensure dogs and cats get the dental, joint, nutritional and topical solutions they need for optimum health at sensible prices consumers are looking for. Pro-Sense® Itch & Allergy Solutions for dogs offers temporary relief of canine allergy symptoms, including itching, runny nose, sneezing and watery eyes. Each chewable tablet contains 25 mg of diphenhydramine HCI, an antihistamine – for use only with dogs. For a pet weighing 15 pounds or more, give ½ tablet for each 15 pounds of body weight. Administer twice per day. For a pet weighing less than 15 pounds, ask a veterinarian. Use only as directed – read the complete product label before use. Contains 100 chewable tablets. Common household allergens include pollen, dust and house mites, dander, feathers, fleas, perfumes and cleaning products. In addition to administering an antihistamine when needed, you can vacuum frequently and bathe your dog weekly with a medicated shampoo to help relieve your pet's allergy symptoms. Talk to your veterinarian about persistent allergy problems.