MERCK Animal Health

Optimmune Ophthalmic Ointment

MERCK Animal Health
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Product Details

Optimmune Ophthalmic Ointment

Product Information

Optimmune (0.2% Cyclosporine) Ophthalmic Ointment is used in treatment of chronic conjunctivitis and other eye conditions.



  • The only FDA-approved veterinary cyclosporine ophthalmic product.
  • Achieves therapeutic effect while avoiding systemic toxicity.
  • Sterile, preservative-free formulation reduces the chance of secondary infection and chemical irritation.
  • Shelf life up to 24 months with no refrigeration.
Active Ingredients

0.2% Cyclosporine, USP Ophthalmic Ointment

Side Effects

Side effects may include drowsiness, sedation or unsteady gait. It is possible your pet may experience nausea or loss of appetite when first starting this medication. Notify your veterinarian if these side effects appear, reappear, and/or remain troublesome.

Other side effects may occur, if you notice anything unusual, contact your veterinarian.


Remove debris with suitable nonirritating solutions. Apply a 1/4 inch strip of ointment to the affected eye(s) every 12 hours. The ointment may be placed directly on the cornea or into the conjunctival sac. 


For ophthalmic use in dogs only. The safety of OPTIMMUNE® has not been determined in cases of preexisting viral or fungal ocular infections, nor in puppies, pregnant bitches, or dogs used for breeding. In clinical trials, ocular and periocular inflammatory reactions, transient hyperemia, epiphora, mild discomfort of the eye and mild alopecia were reported in a small number of treated dogs.