Naphazoline + Chlorpheniramine Combination

This is a combination eye drop commonly used for red, itchy, and allergic eyes. It contains:

• Naphazoline – a decongestant

• Chlorpheniramine – an antihistamine

Together, they relieve redness, watering, and itching caused by allergies or irritation.

Components and Their Roles

1. Naphazoline

   • Type: Ocular decongestant (alpha-adrenergic agonist)

   • Action: Constricts blood vessels in the eye.

   • Purpose: Reduces eye redness and swelling quickly.

2. Chlorpheniramine

   • Type: Antihistamine

   • Action: Blocks histamine, a chemical that triggers itching and allergic reactions.

   • Purpose: Relieves itching, watering, and irritation.

Common Uses

• Allergic conjunctivitis (red, itchy eyes due to pollen, dust, pet dander)

• Eye irritation from smoke, wind, or pollution

• Seasonal allergies affecting the eyes

Advantages

• Provides quick relief from both redness and itching.

• Combination treats the cause (allergic reaction) and the visible symptom (redness).

• Works within minutes and lasts for several hours.

Possible Side Effects

• Mild stinging or burning right after use

• Temporary blurred vision

• Eye dryness with frequent use

• Rarely, rebound redness if overused (blood vessels dilate again after effect wears off)

Precautions

• Should not be used for more than a few days continuously without doctor advice — overuse can worsen redness (rebound effect).

• Not recommended for people with narrow-angle glaucoma unless approved by an eye doctor.

• Wash hands before use and avoid touching the dropper tip.

• If symptoms persist, it may indicate infection or a more serious allergy and should be checked by a doctor.