CalmCo Allergy Relief Gummy Bites – Fast-Acting, Chewable Antihistamine for Multi-Symptom Allergy Relief Get effective allergy and cold relief with CalmCo Allergy Relief Gummy Bites. Each gummy contains 25mg of diphenhydramine HCl, a powerful antihistamine that helps relieve common allergy symptoms such as sneezing, runny nose, sore throat, watery and itchy eyes. These gummies also provide temporary relief from symptoms caused by the common cold. Designed for ease of use, these chewable gummies require no water, making them perfect for travel or daily use. They provide relief for 4-6 hours and may cause drowsiness, making them a great choice for nighttime allergy medicine for adults and children ages 12 and up. Take 1-2 gummies every 4-6 hours as needed, with a maximum of 12 gummies per day.