Allegra 24-hour tablets relieve seasonal allergies all day long. Allegra works on outdoor allergies like pollen and grasses, plus it works on indoor allergies like dust and pet dander too. Allegra won"t make you drowsy and it works fast. Adults can reduce hay fever symptoms like sneezing, runny nose, itchy and watery eyes and itchy nose and throat. This box includes 45 tablets. Each tablet is 180 mg. of all-day allergy relief.