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- Shakiness and unsteady walk
- Tenderness, pain, swelling, warmth, skin discoloration, and prominent superficial veins over affected area
- Unsteadiness, trembling, or other problems with muscle control or coordination
- Abdominal or stomach pain
- Black, tarry stools
- Blurred vision
- Changes in patterns and rhythms of speech
- Chest pain or discomfort
- Chills
- Cold, clammy, or pale skin
- Confusion
- Cough
- Dark urine
- Decrease in frequency of urination
- Decrease in urine volume
- Difficulty in passing urine (dribbling)
- Dizziness, faintness, or lightheadedness when getting up from a lying or sitting position suddenly
- Fear or nervousness
- Fever
- Hallucinations
- Headache
- Irregular heartbeats
- Itching
- Loss of appetite
- Loss of bladder control
- Lower back or side pain
- Muscle spasm
- Nausea
- Nightmares
- Outbursts of anger
- Painful or difficult urination
- Pale skin
- Rash
- Shakiness in the legs, arms, hands, or feet
- Shortness of breath
- Sleeplessness
- Slow heart rate
- Slow or irregular heartbeat
- Slurred speech
- Sore throat
- Sweating
- Trembling or shaking of hands or feet
- Trouble in speaking
- Trouble sleeping
- Ulcers, sores, or white spots in the mouth
- Unable to sleep
- Unpleasant breath odor
- Unusual bleeding or bruising
- Unusual excitement, nervousness, restlessness, or irritability
- Unusual tiredness or weakness
- Vomiting of blood
- Yellow eyes or skin
- Deep or fast breathing with dizziness
- Difficult or troubled breathing
- Irregular, fast or slow, or shallow breathing
- Numbness of the feet, hands, and around the mouth
- Pale or blue lips, fingernails, or skin
- Tightness in the chest
- Wheezing
Get emergency help immediately if any of the following symptoms of overdose occur:
Symptoms of overdose- Change in consciousness
- Lack of coordination
- Loss of consciousness
- Sleepiness or unusual drowsiness
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- Constipation
- Decreased interest in sexual intercourse
- Difficulty in swallowing
- Discouragement
- Double vision
- Dry mouth
- Feeling of constant movement of self or surroundings
- Feeling sad or empty
- Hiccups
- Hives or welts
- Inability to have or keep an erection
- Increase in sexual ability, desire, drive, or performance
- Increased interest in sexual intercourse
- Increased watering of the mouth
- Itching
- Lack of appetite
- Loss in sexual ability, desire, drive, or performance
- Loss of interest or pleasure
- Redness of skin
- Seeing double
- Sensation of spinning
- Trouble concentrating
- Uncontrolled eye movements
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.


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