Claritin , clinically proven to provide fast, effective relief Clinically proven to provide fast, effective, non-drowsy 24-hour relief from your worst allergy symptoms. Claritin can be taken any time of the day.  Use as directed when allergy symptoms first appear, then daily while your allergy triggers remain. Consult a doctor for use beyond 6 months. Features: 24-hour relief from indoor and outdoor allergy symptoms without causing drowsiness, so you can stay alert and focused all day. Provides fast relief of allergy symptoms caused by outdoor allergens such as trees, grass, ragweed and pollen and indoor allergens such as dust mites, animal dander and moulds. Relief of your worst allergy symptoms including itchy, watery, red, burning eyes, sneezing, runny nose, itchy nose, skin itch and hives.