It is very important that your doctor check your or your child's progress at regular visits to make sure that this medicine is working properly. Blood and urine tests may be needed to check for unwanted effects.
When you start using this medicine, you may have more gout attacks. Keep using the medicine even if this happens. Your doctor may give you other medicines (eg, colchicine, pain medicines [NSAIDs]) to help prevent the gout attacks.
Serious skin reactions can occur with this medicine. Call your doctor right away at the first appearance of a skin rash or allergic reaction (eg, trouble breathing or swallowing, swelling of your hands, face, or mouth). Check with your doctor if you also develop blistering, peeling, or loosening of the skin, red skin lesions, severe acne, or sores or ulcers on the skin.
Check with your doctor right away if you or your child have stomach pain or tenderness, pale stools, dark urine, loss of appetite, nausea, unusual tiredness or weakness, or yellow eyes or skin. These could be symptoms of a serious liver problem.
This medicine may cause some people to become drowsy or less alert than they are normally. Do not drive or do anything else that could be dangerous until you know how this medicine affects you.
Do not take other medicines unless they have been discussed with your doctor. This includes prescription or nonprescription (over-the-counter [OTC]) medicines and herbal or vitamin supplements.
