Side Effects
Along with its needed effects, a medicine may cause some unwanted effects. Although not all of these side effects may occur, if they do occur they may need medical attention.
Check with your doctor immediately if any of the following side effects occur:
More common- Black, tarry stools
- Blistering, peeling, or loosening of the skin
- Chills
- Clay-colored stools
- Cough
- Dark urine
- Diarrhea
- Fever
- General tiredness and weakness
- Itching
- Joint or muscle pain
- Light-colored stools
- Lower back or side pain
- Nausea and vomiting
- Painful or difficult urination
- Pale skin
- Red, irritated eyes
- Red skin lesions, often with a purple center
- Shortness of breath
- Skin rash
- Sore throat
- Sores, ulcers, or white spots in the mouth or on the lips
- Troubled breathing with exertion
- Unusual bleeding or bruising
- Unusual tiredness or weakness
- Upper right abdominal or stomach pain
- Yellow eyes and skin
- Decreased appetite
- Hives
- Loss of appetite
- Swelling of the feet or lower legs
- Abdominal or stomach pain
- Pain, numbness, or tingling of the hands, arms, legs, or feet
- Sleepiness or unusual drowsiness
- Tingling, burning, or prickly sensations
Get emergency help immediately if any of the following symptoms of overdose occur:
Symptoms of overdose- Chest pain
- Cough
- Decrease in weight
- Dizziness or lightheadedness
- Feeling of constant movement of self or surroundings
- Headache
- Pain in the ankles or knees
- Painful, red lumps under the skin, mostly on the legs
- Sensation of spinning
- Trouble sleeping
Some side effects may occur that usually do not need medical attention. These side effects may go away during treatment as your body adjusts to the medicine. Also, your health care professional may be able to tell you about ways to prevent or reduce some of these side effects. Check with your health care professional if any of the following side effects continue or are bothersome or if you have any questions about them:
Less common- Difficulty with moving
- Muscle pain or stiffness
- Pain in the joints
Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.
Call your doctor for medical advice about side effects. You may report side effects to the FDA at 1-800-FDA-1088.


Find Mayo Clinic on