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- Body aches or pain
- Chills
- Cough
- Difficulty with breathing
- Ear congestion
- Fever
- Headache
- Loss of voice
- Nasal congestion
- Runny nose
- Sneezing
- Sore throat
- Unusual tiredness or weakness
- Yellow eyes or skin
- Black, tarry stools
- Bladder pain
- Bleeding gums
- Blindness
- Blood in the urine or stools
- Bloody eye
- Blurred vision
- Bruising
- Burning, crawling, itching, numbness, prickling, "pins and needles", or tingling feelings
- Cloudy urine
- Congestion
- Decreased vision
- Diarrhea
- Difficult, burning, or painful urination
- Dryness or soreness of the throat
- Frequent urge to urinate
- General feeling of discomfort or illness
- Hoarseness
- Joint pain
- Large, flat, or blue or purplish patches in the skin
- Longer or heavier menstrual periods
- Loss of appetite
- Lower back or side pain
- Muscle aches and pains
- Nausea
- Pinpoint red spots on the skin
- Redness of the eye
- Shivering
- Sweating
- Tender, swollen glands in the neck
- Trouble with sleeping
- Trouble with swallowing
- Unusual bleeding or bruising
- Voice changes
- Vomiting
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- Acid or sour stomach
- Back pain
- Belching
- Bone pain
- Difficulty with moving
- Dry mouth
- Hair loss or thinning of the hair
- Heartburn
- Indigestion
- Muscle aching or cramping
- Muscle pains or stiffness
- Rash
- Stomach discomfort, upset, or pain
- Swollen 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