Get fast eye care and allergy itch relief with Pataday Once Daily Relief, available without a prescription. A single eye drop of Pataday Once Daily Relief features the ingredient doctors prescribed 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 fast eye allergy itch relief that lasts all day.