Allergy Relief Tablets, 100 ct, QC94577 Sale! This item is currently on backorder but you can still purchase it now and we'll ship as soon as more become available. Compare to the Active Ingredient in Benadryl. Temporarily relieves symptoms due to hay fever or other upper respiratory allergies including runny nose, sneezing, itchy watery eyes, and itching of the nose or throat. Temporarily relieves symptoms due to the common cold, runny nose and sneezing.