Olopatadine Hydrochloride (Eye Drops) | MedexInfo

Olopatadine Hydrochloride Ophthalmic Solution

Rx Only

Therapeutic ClassAntihistamine / Mast Cell Stabilizer

Common Dose1 drop in affected eye(s) twice daily

Max / 24h2 drops per eye

PregnancyCategory C

Indications ▼

Allergic conjunctivitis: relief of ocular itching, redness, tearing, and burning sensation.

Seasonal or perennial ocular allergy caused by pollen, dust mites, animal dander, or mold.

Adjunct therapy for patients not fully controlled with oral antihistamines.

Prevention of ocular allergy symptoms prior to allergen exposure (prophylactic use).

Mechanism & Pharmacokinetics ▼

Mechanism: Olopatadine blocks H1 histamine receptors and stabilizes mast cells in conjunctival tissue, reducing histamine-mediated inflammation and ocular itching.

Pharmacokinetics: Minimal systemic absorption after ocular administration. Peak plasma levels occur in 10–20 minutes if absorbed. Metabolized hepatically; excreted in urine. Short half-life; low risk of systemic side effects.

Dosage & Administration ▼

Patient Category	Recommended Dose	Max / 24h
Adults & Children ≥3 years	1 drop in affected eye(s) twice daily	2 drops per eye
Children <3 years	Not recommended	–

Side Effects ▼

Common: mild eye irritation, burning, stinging, or dry eyes after instillation

Occasional: headache, blurred vision, or taste perversion if drops drain to throat

Rare: hypersensitivity reactions including eye swelling or rash

Contraindications ▼

Hypersensitivity to olopatadine or any component of the ophthalmic solution

Active ocular infection (bacterial, viral, or fungal)

Drug Interaction ▼

No clinically significant drug interactions reported for topical ocular use

Concurrent use of other eye drops should be separated by at least 5 minutes

Pregnancy & Lactation ▼

Use only if clearly needed (Category C)

Minimal systemic absorption; considered compatible with breastfeeding

Clinical / Research Summary ▼

Rapid Relief: Olopatadine eye drops provide fast relief of ocular itching, redness, and tearing, typically within minutes of administration.

Comparative Studies: Efficacy comparable to ketotifen and azelastine eye drops, with better tolerability and less stinging.

Chronic Use: Well-tolerated for long-term management of seasonal and perennial allergic conjunctivitis; low risk of systemic adverse effects.

Prophylactic Administration: Effective in preventing symptom onset when used prior to allergen exposure.

Safety Profile: Minimal ocular irritation; rare hypersensitivity reactions reported post-marketing. No significant effect on visual acuity or intraocular pressure.

Patient Counseling Points ▼

Wash hands before instillation; avoid touching dropper tip to eye

Instill 1 drop twice daily in affected eye(s); do not exceed recommended dose

Wait at least 5 minutes between different eye drops

Remove contact lenses before administration; may reinsert after 10 minutes

Report persistent irritation, redness, or vision changes to a healthcare provider

Pregnant or breastfeeding women should consult a physician before use

Storage & Handling ▼

Store at 2–25°C; protect from light and do not freeze

Keep out of reach of children

Brand Names (Bangladesh & Global) ▼

Bangladesh (Local Brands):

Opatanol Patanol

Global / International Brands:

Patanol Opatanol Olopatadine Eye Drops

Medical Disclaimer: This clinical summary is for informational purposes only. Always follow guidance from a qualified healthcare professional for dosage, interactions, and use.

Reference Hubs:

• Drug Class: Antihistamines (H1) / Mast Cell Stabilizer • Conditions: Allergic Conjunctivitis • Pathway: Histamine H1 Receptor • Clinical Evidence & Trials