Isopto Cetamide

1 What is Isopto Cetamide?

Brand: Isopto Cetamide

Generic: Sulfacetamide Sodium

Isopto CetamideĀ is a drug used in the treatment of conjunctivitis and other superficial eye infections caused by microorganisms susceptible to this drug. This drug is available as an ointment containing sulfacetamide sodium 100 milligrams in 1 gram or as an eye solution containing sulfacetamide sodium 150 milligrams in 1 milliliter.


Wash your hands prior to application. Do not touch the dropper tip or let it touch your eye or any other object to avoid contamination. Next, tilt your head and look upward. Pull down the lower lid and place one drop into the eye. Place one finger at one corner of the eye and press gently to prevent the solution from draining out. Do not rub the treated eye. Repeat as directed. Do not rinse the dropper and replace cap after use. For eye ointments, see package instructions.

This medication should not be used while wearing contact lenses. Consult your doctor or pharmacist for details.

Other eye drugs should be used at least 5 minutes after applying this drug. Use eye drops before eye ointments.

If your condition persists or worsens, consult your doctor.

If you miss a dose, use it as soon as you remember. Continue to use it as prescribed by your doctor or as stated on the package label.


Isopto Cetamide may interact with medications such as silver preparations for the eye (such as silver nitrate).

Side Effects:

There are no side effects known aside from a possible allergic reaction in people who have previous or unknown hypersensitivity to the drug.

Watch out for signs of allergic reactions such as:

  • Rash
  • Itching
  • Swelling


Before taking this medication, tell your doctor or pharmacist if you have the following:

  • Allergy to sulfacetamideor to other sulfa antibiotics such as sulfamethoxazole
  • Contact lens use
  • Pregnancy or lactation