Alerchek 0.2% is prescribed primarily for seasonal allergic conjunctivitis, which can be triggered by dust, pollen, pet dander, insects, or animal hair Practo +2 . The drops help reduce redness, itching, burning, and excessive tearing by blocking histamine, a chemical responsible for allergic reactions in the eyes.

Dosage and Administration Standard dosage:

One drop in the affected eye(s) twice daily for adults; consult your doctor for children and special cases.

Administration steps:

Wash your hands thoroughly, tilt your head back, pull down the lower eyelid to create a pocket, squeeze the dropper to release a drop, then close your eyes for 2–3 minutes.

Precautions:

Avoid touching the dropper tip to any surface or your eye to prevent contamination. Remove contact lenses before using and wait at least 15 minutes before reinserting them.

In case of missed dose, apply as soon as remembered ; skip if close to the next scheduled dose. Do not double the dose

Side Effects

• Common side effects include: eye irritation, blurred vision, dry eyes, headache, eye discomfort, eye pain, and fatigue. Most are mild and resolve on their own.

Severe allergic reactions are rare, but medical attention should be sought if symptoms like swelling, rash, or breathing difficulty occur . Precautions and Warnings Pregnancy and breastfeeding: Not recommended unless necessary; consult your doctor 2 . Children: Avoid use in children under 3 years of age 2 . Driving and machinery: May cause blurred vision; avoid driving until vision is clear 1 . Avoid alcohol and unknown interactions: Effect with alcohol is not well studied; consult a doctor if necessary 1 . 2 Sources

How It Works

Olopatadine, the active ingredient, prevents the release of histamine, reducing allergic reactions in the eyes and relieving symptoms such as itching, redness, and watery eyes. The effects usually start within 2 hours and last up to 20–24 hours.