Get fast eye allergy itch relief with Pataday® Once Daily Relief, the first once daily eye allergy itch relief drop that is available without a prescription. A single drop of Pataday® Once Daily Relief features the ingredient doctors prescribe most for eye allergy itch relief caused by pollen, ragweed, grass, animal hair and dander. Pataday® Once Daily Relief is applied directly to the eye to reduce itchy allergy symptoms fast by working directly on the cells that make eyes itch for up to 16 hours.