Medique Diphen temporarily relieves the following symptoms associated with hay fever or other upper respiratory allergies: runny nose, sneezing, itching of the nose or throat and itchy watery eyes caused by hay fever and other symptoms of allergic reactions. Active ingredients in each tablet diphenhydramine hydrochloride 25-milligram, antihistamine. Other information: store at room temperature 59-86-Degree Fahrenheit 15-30-Degree Celsius. Tamper-evident sealed packets. Do not use any opened or torn packets. Medique Products takes great care to ensure that the product you take is completely safe. Always refer to the original container for the most accurate drug facts for your particular lot number.