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Neurontin

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Common known 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 as soon as possible if any of the following side effects occur:

More common

- Clumsiness or unsteadiness- continuous, uncontrolled, back-and-forth and/or rolling eye movements

More common in patients 3 to 12 years of age

- Aggressive behaviors or other behavior problems- anxiety- concentration problems and change in school performance- crying- false sense of well-being- hyperactivity or increase in body movements- mental depression - reacting too quickly, too emotionally, or overreacting - rapidly changing moods- restlessness- suspiciousness or distrust

Less common

- Black, tarry stools- chills- chest pain- cough- depression, irritability, or other mood or mental changes- fever- loss of memory- pain or swelling in arms or legs- painful or difficult urination- shortness of breath- sore throat- sores, ulcers, or white spots on lips or in mouth- swollen glands- unusual bleeding or bruising- unusual tiredness or weakness

Frequency not determined

- abdominal or stomach pain- blistering, peeling, loosening of skin- clay-colored stools- coma- confusion- convulsions- dark urine- decreased urine output- diarrhea- dizziness- fast or irregular heartbeat- headache- increased thirst- itching- joint pain- large, hive-like swelling on face, eyelids, lips, tongue, throat, hands, legs, feet, sex organs- loss of appetite- muscle ache or pain- nausea- red irritated eyes- red skin lesions, often with a purple center- skin rash- sores, ulcers, or white spots in mouth or on lips- unpleasant breath odor- unusual tiredness or weakness- vomiting of blood- yellow eyes or skin

Symptoms of overdose

- Diarrhea- double vision- drowsiness- sluggishness- slurred speech

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

- Blurred or double vision- cold or flu-like symptoms- delusions- dementia - drowsiness- hoarseness - lack or loss of strength- lower back or side pain- swelling of hands, feet, or lower legs- trembling or shaking

Less common or rare

- Accidental injury- appetite increased - back pain- bloated full feeling- body aches or pain- burning, dry or itching eyes- change in vision- change in walking and balance- clumsiness, or unsteadiness- congestion- constipation- cough producing mucus- decrease in sexual desire or ability- dementia- difficulty breathing- dryness of mouth or throat- earache- excess air or gas in stomach or intestines- excessive tearing- eye discharge- feeling faint, dizzy, or lightheadedness- feeling of warmth or heat- flushing or redness of skin, especially on face and neck- flushed, dry skin- frequent urination- fruit-like breath odor- impaired vision- increased hunger- increased sensitivity to pain- increased sensitivity to touch- increased thirst- incoordination- indigestion- low blood pressure- nervousness- noise in ears- pain, redness, rash, swelling, or bleeding where the skin is rubbed off- passing gas- redness, pain, swelling of eye, eyelid, or inner lining of eyelid- redness or swelling in ear- runny nose- shortness of breath- slurred speech- sneezing- sweating- tender, swollen glands in neck- tightness in chest - tingling in the hands and feet- troubled breathing- trouble in sleeping- trouble in swallowing- trouble in thinking - twitching- unexplained weight loss- voice changes- vomiting- weakness or loss of strength- weight gain- wheezing

Other side effects not listed may also occur in some patients. If you notice any other effects, check with your healthcare professional.