Drug reference
Olopatadine
Antihistamine · Treatment of allergic conjunctivitis
Also known as Olopatadine hydrochloride, Opatanol
AntihistamineTreatment of allergic conjunctivitis
CDSCO approved
EXCRETION
—
not curated
INTERACTIONS
—
none in our sources
PREGNANCY
—
not curated
Mechanism
Olopatadine acts as an antihistamine.
Indications
Seasonal allergic conjunctivitisSeasonal keratoconjunctivitis
Dosing
- Adult
- Seasonal allergic conjunctivitis: Apply twice daily for maximum 4 months. Alternatively, apply twice daily, increased if necessary to 4 times a day, maximum 12 weeks duration. Seasonal keratoconjunctivitis: Apply 4 times a day.
- Pediatric
- Child 3–17 years for Seasonal allergic conjunctivitis: Apply twice daily for maximum 4 months. Child 6–17 years for Seasonal allergic conjunctivitis: Apply twice daily, increased if necessary to 4 times a day, maximum 12 weeks duration. Child 6–17 years for Seasonal keratoconjunctivitis: Apply 4 times a day.
- Max dose
- 4 times a day
Side effects
Common
Astheniadry eyeeye discomfortheadachenasal drynesstaste altered
Serious
- Dizziness
- eye disorders
- eye inflammation
- increased risk of infection
- numbness
- skin reactions
- vision disorders
- Drowsiness
- dyspnoea
- malaise
- nausea
- vomiting
Drug interactions
9 additional unreviewed or low-confidence interactions hidden because their provenance or source detail is insufficient.
Other Antihistamine drugs
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Textbook-sourced·Sources: Goodman & Gilman 14e, Katzung, BNF, Nelson·Updated: 2026-05-10