Generic name: Olopatadine.

Patanol is an antihistamine. Antihistamines block the effects of histamine, a body chemical that causes swelling and itching.

Quick Facts About Patanol


Use to relieve eye itching due to allergic conjunctivitis (pinkeye).

Patanol Dosage

Use exactly as prescribed. Wash hands before and after use, and do not touch applicator to your eye or any other surface. Wait at least 5 minutes before administering other eyedrop or ointment. Wait at least 15 minutes to insert contact lenses.

  • Usual adult dose: 1-2 drops twice per day at 6-to-8-hour intervals.
  • Usual child dose: 3 years and over — follow adult dosing instructions. Under 3 years — not recommended.
  • Missed dose: take as soon as possible, unless almost time for next dose. In that case, do not take missed dose; go back to regular schedule. Do not double doses.

Patanol Side Effects

Overdose symptoms:

none expected; however, if you suspect an overdose, immediately seek medical attention.

More common side effects: headache.

Less common Patanol side effects: burning or stinging of the eye, common cold symptoms, dry eye, feeling of foreign matter in eye, general weakness, itching and swelling of the lid, redness or inflammation of eye, sore throat, sinus inflammation, taste changes.


No known Patanol drug interactions.

No known food/other substance interactions.

Special Cautions

If pregnant, planning to become pregnant, or breast-feeding, inform your doctor immediately.

No special precautions apply to seniors.

Not generally prescribed for children under 3 years.

  • Do not instill medication while wearing contact lenses.

Note: provides accurate and independent information prescription pills, over-the-counter medicines and natural products. This material is provided for educational purposes only and is not intended for medical advice, diagnosis or treatment. If you have questions about  dosage, or Patanol side effects, please contact your healthcare provider