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- Confusion
- Dizziness, faintness, or lightheadedness when getting up from a lying or sitting position suddenly
- Drowsiness
- Falling
- Nausea
- Seeing, hearing, or feeling things that are not there (hallucinations)
- Sleepiness or unusual drowsiness
- Swelling of legs
- Twisting, twitching, or other unusual body movements
- Unusual tiredness or weakness
- Worsening of parkinsonism
- Abdominal pain
- Bloating or swelling of the face, arms, hands, lower legs, or feet
- Blood in urine
- Blurred vision
- Burning, pain, or difficulty in urinating
- Chest pain
- Chills
- Cold sweats
- Cough
- Double vision or other eye or vision problems
- Fainting
- Fear or nervousness
- Feeling of constant movement of self or surroundings
- High or low blood pressure
- Irregular or pounding heartbeat
- Loss of memory
- Mental depression
- Pain
- Pain in arms or legs
- Pounding in the ears
- Rapid weight gain
- Sensation of spinning
- Shortness of breath
- Slow or fast heartbeat
- Sore throat
- Sweating
- Tightness in chest
- Tingling of hands or feet
- Tingling, numbness, or prickly feelings
- Trouble in concentrating
- Troubled breathing
- Unusual weight gain or loss
- Vomiting
- Wheezing
- Anxiety
- Buzzing or ringing in the ears
- Changes in vision
- Fever
- Headache
- Joint pain
- Loss of bladder control
- Muscle cramps, pain, or spasms
- Nasal congestion
- Runny nose
- Sneezing
- Trouble in swallowing
- Unusual urges
Get emergency help immediately if any of the following symptoms of overdose occur:
Symptoms of overdose- Agitation
- Fatigue
- Grogginess
- Increase in unusual body movements, especially of the face or mouth
- Increased coughing
- Increased sweating
- Lack or loss of strength
- Nightmares
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- Abnormal dreams
- Acid or sour stomach
- Back pain
- Belching
- Decrease in sexual desire or performance
- Difficulty having a bowel movement (stool)
- Dryness of mouth
- Flushing
- General feeling of discomfort or illness
- Heartburn or gas
- Hot flashes
- Indigestion
- Loss of appetite
- Tremor
- Weight loss
- Yawning
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.