Active Ingredient: Olopatadine Hydrochloride 2Mg/Ml Pataday Eye Drops 2Mg/2.5Ml Contains Olopatadine Hydrochloride, A Highly Effective Antihistamine Used To Relieve The Symptoms Of Seasonal Allergic Conjunctivitis. This Product Works By Inhibiting The Action Of Histamine, Thereby Reducing Allergy-Related Eye Discomfort. Side Effects: Common Side Effects May Include: Burning Or Stinging Sensation Upon Application. Blurred Vision Temporarily After Use. Dryness Or Irritation In The Eye. Headache. Serious Side Effects Are Rare But May Include Signs Of An Allergic Reaction. If You Experience Severe Discomfort, Stop Using The Drops And Consult Your Healthcare Provider Immediately. Precautions: Allergy Warning: Avoid If You Have A Known Allergy To Olopatadine Hydrochloride Or Any Other Ingredients In The Drops. Contact Lens Wearers: Remove Contact Lenses Before Using The Drops. Wait At Least 10 Minutes Before Reinserting Them. Pregnancy And Breastfeeding: Consult A Doctor Before Use If Pregnant Or Breastfeeding. Avoid Contamination: Do Not Touch The Dropper Tip To Your Eye Or Any Other Surface To Maintain Hygiene And Prevent Contamination. Other Medications: Do Not Mix With Other Eye Medications Unless Directed By Your Ophthalmologist.