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- Cough or hoarseness
- Fever or chills
- Lower back or side pain
- Painful or difficult urination
- Chest pain
- Dizziness or lightheadedness
- Fainting
- Feeling of constant movement of self or surroundings
- Painful or prolonged erection of the penis
- Sensation of spinning
- Blurred vision
- Confusion
- Dizziness, faintness, or lightheadedness when getting up from a lying or sitting position suddenly
- Fast, pounding heartbeat
- Large, hive-like swelling on the face, eyelids, lips, tongue, throat, hands, legs, feet, or sex organs
- Peeling of the skin
- Sweating
- Unusual tiredness or weakness
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- Abnormal ejaculation
- Back pain
- Body aches or pain
- Congestion
- Diarrhea
- Dryness or soreness of the throat
- Headache
- Lack or loss of strength
- Sneezing
- Stuffy or runny nose
- Tender, swollen glands in the neck
- Trouble with swallowing
- Unusual weakness
- Voice changes
- Decreased interest in sexual intercourse
- Decreased sexual drive or performance
- Drowsiness
- Inability to have or keep an erection
- Increased cough
- Loss in sexual ability, desire, drive, or performance
- Nausea
- Sleepiness or unusual drowsiness
- Sleeplessness
- Trouble with sleeping
- Unable to sleep
- Constipation
- Hives or welts
- Itching skin
- Redness of the skin
- Skin rash
- Vomiting
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.