Mayo Clinic Health Manager
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Get StartedSide 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- Red or purple spots on skin, varying in size from pinpoint to large bruises
- Nosebleed
- Vomiting of blood or material that looks like coffee grounds
- Black, tarry stools
- Blistering, flaking, or peeling of skin
- Blood in urine or stools
- Fever, chills, or sore throat
- Headache (sudden, severe)
- Stomach pain (severe)
- Ulcers, sores, or white spots in mouth
- Unusual bleeding or bruising
- Weakness (sudden)
Check with your doctor as soon as possible if any of the following side effects occur:
More common- Chest pain
- Cough
- Generalized pain
- Runny nose
- Sneezing
- Fainting
- Frequent urination
- Irregular heartbeat
- Joint pain
- Painful or difficult urination
- Shortness of breath
- Swelling of feet or lower legs
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:
More common- Abdominal or stomach pain (mild)
- Aching muscles
- Back pain
- Dizziness
- General feeling of discomfort or illness
- Headache
- Heartburn
- Anxiety
- Constipation
- Diarrhea
- Itching
- Leg cramps
- Mental depression
- Numbness or tingling
- Nausea
- Skin rash
- Trouble in sleeping
- Unusual tiredness
- Vomiting
- Weakness
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.