Drug Facts: Active ingredient (in each tablet) - Diphenhydramine HCI 25 mg - Purpose - Antihistamine. Temporarily relieves these symptoms due to hay fever or other upper respiratory allergies: runny nose, itchy, watery eyes, sneezing, itching of the nose or throat, temporarily relieves these symptoms due to the common cold: runny nose, sneezing. Control your runny nose, itchy throat and watery eyes with Equate Dye-Free Allergy Relief Tablets. Our formula contains the active ingredient diphenhydramine HCI, a powerful antihistamine designed to help relieve allergy symptoms brought on by pollen, pet dander and the common cold. This anti-allergy medicine for kids and adults is available in a convenient 100-count bottle, so you will have plenty of tablets for when you need them the most. Allergies can hit you anytime and anywhere, so rely on Equate Dye-Free Allergy Relief Tablets to feel better fast. Making the right health decisions can be challenging. With a complete range of products and simple solutions, Equate allows you to take care of your family with confidence.