The most common side effect of NSAIDs is stomach upset, but stomach ulcers may develop, in which case you may see loss of appetite; vomiting; diarrhea; dark, tarry or, bloody stools; or constipation. Side effects involving the kidney include increased thirst and urination, or changes in the urine color or smell. Liver-related side effects include jaundice (yellowing of the gums, skin, or eyes). Other side effects may include pale gums, lethargy, shedding, incoordination, seizures, or behavioral changes. If any of these side effects are observed, stop treatment and contact your veterinarian.
If your pet experiences an allergic reaction to the medication, signs may include facial swelling, hives, scratching, sudden onset of diarrhea, vomiting, shock, seizures, pale gums, cold limbs, or coma. If you observe any of these signs, contact your veterinarian immediately.