Relieve your worst allergy symptoms, both indoors and out with Zyrtec 24-hour liquid gels. Zyrtec provides relief from sneezing, runny nose, itchy and watery eyes and itchy throat and nose due to seasonal allergies. Adults take one 10-mg. antihistamine liquid gel and get 24 hours of hay fever relief. Liquid gels dissolve faster too. This package of Zyrtec comes with 40 liquid gel capsules.