Stop giving the medication and seek emergency veterinary medical attention if your pet experiences an allergic reaction (difficulty breathing, closing of the throat, swelling of the lips, tongue or face, or hives), unusual bleeding or bruising, or yellow skin or eyes. Other less serious side effects may also occur. Continue to give the medication and talk to your veterinarian if your pet experiences fatigue, dizziness, nausea, vomiting, decreased appetite, diarrhea, weakness, or increased sensitivity to the sun. Side effects other than those listed may occur. Talk to your veterinarian about any side effect that seems unusual or bothersome to your pet..
Do not use in pregnant or nursing animals. Leave plenty of water for your pet to drink. Report any unusual side effects to your veterinarian.
Do not give this medication to pets allergic to it or other sulfonamides (sulfa drugs). Avoid prolonged exposure to sunlight. This medication may increase sensitivity of the skin to sunlight.