Murine Sore Eyes relieves irritated, sore eyes. Several external factors can cause the eyes to become irritated, sore and uncomfortable, such as : Eye strain, overwork, air conditioning, chlorine or minor colds and allergies. Murine Sore Eyes helps combat irritation and helps relieve redness and puffiness improving eye comfort. ALWAYS READ THE LABEL. USE ONLY AS DIRECTED. IF SYMPTOMS PERSIST SEE YOUR DOCTOR. Active ingredient: Tetrahydrozoline HCl 0.5mg/mL DISCARD CONTENTS 30 DAYS AFTER OPENING.