Cyclosporin is an immunosuppressive agent prescribed by vets to prevent diseases and disorders caused by an overactive immune system. Cyclosporin is also available as an eye ointment used for treating keratoconjunctivitis sicca (dry eye syndrome). It can also be used to aid the healing of perianal fistulas (cracks around the anus).


If you miss a dose ensure it is given as soon as possible, however, if it is almost time for the next dose then skip the missed dose and continue as normal. Ensure two doses are not administered together.

I have heard that this drug can have side effects, how will this affect my pet?

All medicines have potential side effects but this does not mean your pet has a high risk of experiencing them. The most common side effect are vomiting, diarrhea and loss of appetite. Other side effects may include liver and kidney problems. If you notice anything unusual, contact your vets immediately.

Possible drug interactions

Ensure your vet is aware of any other medication you are giving your pet. Drug interaction is not uncommon when two differing medications are prescribed. Medications that may interact with cyclosporin include gentamicin, amphotericin B, ketoconazole, erythromycin, cimetidine, phenobarbital, and phenytoin.

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