Possible side effects

Side effects that may occur while taking this medicine include stomach upset, nausea, diarrhea, or headache. If they continue or are bothersome, check with your doctor. Check with your doctor as soon as possible if you experience unusual weakness or weight gain. Contact your doctor immediately if you experience swelling of hands, face, lips, eyes, throat, or tongue; difficulty swallowing; hoarseness; flu-like symptoms; sluggishness; yellowing of the skin or eyes; dark urine or pale stools; unusual fatigue; change in amount of urine; dizziness; or blurred vision.Contact your doctor immediately and stop taking this medicine if you notice any of the following unlikely but very serious side effects: black stools, persistent stomach/abdominal pain, or vomit that looks like coffee grounds. Rarely, this medicine can cause serious, even fatal, side effects such as severe peeling skin rashes, known as stevens-johnson syndrome or toxic epidermal necrolysis.Seek immediate medical attention if you experience any of the following symptoms: skin rash, peeling skin, or blisters. An allergic reaction to this medicine is unlikely, but seek immediate medical attention if it occurs. Symptoms of an allergic reaction include itching, severe dizziness, or trouble breathing. If you notice other effects not listed above, contact your doctor, nurse, or pharmacist.