Clinical Overview
Olopatadine Hydrochloride (0.1%, 0.2% w/v) is a dual-action mast cell stabilizer and selective histamine H1 receptor antagonist on the WHO Model List of Essential Medicines. It blocks H1 receptors on conjunctival nerves and vascular endothelium (providing rapid relief of itching within 30 minutes) and stabilizes mast cell membranes, inhibiting histamine, tryptase, and leukotriene degranulation. Indicated for the treatment of signs and symptoms of allergic conjunctivitis (seasonal and perennial).
Active Pharmaceutical Ingredients
Verified Clinical References
Usage Guidelines
Instill one drop into the affected eye(s) twice daily (every 6 to 8 hours for 0.1%) or once daily (for 0.2%). Remove soft contact lenses before instilling; reinsert after 10-15 minutes.
General Administration Advice: Adhere strictly to the prescribed dosage, frequency, and treatment course. For oral medications, swallow with sufficient water. Never stop antibiotics, psychiatric medications, or antihypertensives abruptly without clinical direction.
Possible Side Effects
Common: Transient eye burning, stinging, dry eye, foreign body sensation, headache, bitter taste in mouth. Rare/Severe: Hypersensitivity reactions and corneal staining.
*Note: Individual physiological responses vary. While many patients experience few or no side effects, notify your treating physician if adverse reactions persist or if hypersensitivity (angioedema, skin rash, dyspnea) occurs.
Precautions & Warnings
Do not use while wearing contact lenses if eyes are actively red. Do not touch dropper tip to eye surface.
Schedule H (Prescription Required)
This medication is scheduled under statutory drug regulatory frameworks (CDSCO / Drugs & Cosmetics Rules). Dispensing requires a valid medical prescription from a registered medical practitioner. Self-medication or unsupervised dosage adjustment carries significant clinical risks.
Medical Disclaimer: Statutory Clinical Disclaimer: The information provided is for educational and price-transparency purposes only and does not constitute medical advice, clinical diagnosis, or ophthalmic treatment recommendations. Always consult a registered ophthalmologist or ENT specialist before initiating, changing, or instilling any ophthalmic or otic medication.