GABAPENTIN Side Effects by Likelihood and Severity

COMMON side effects

If experienced, these tend to have a Severe expression i

  • nystagmus, a condition with involuntary eye movements
  • loss of muscle coordination

If experienced, these tend to have a Less Severe expression i

  • drowsiness
  • inducing of a relaxed easy state
  • dizziness
  • low energy
  • fluid retention in the legs, feet, arms or hands

INFREQUENT side effects

If experienced, these tend to have a Severe expression i

  • mood changes
  • depression
  • feelings of hostility
  • memory loss
  • mental status changes
  • trouble breathing

If experienced, these tend to have a Less Severe expression i

  • an infection due to a virus
  • lazy eye
  • double vision
  • a bacterial infection of the middle ear
  • throat irritation
  • dry mouth
  • constipation
  • backache
  • muscle tremors
  • weight gain
  • throat dryness
  • a type of speech disorder called dysarthria
  • cough
  • nausea
  • vomiting
  • diarrhea
  • generalized weakness
  • a feeling of general discomfort called malaise

RARE side effects

If experienced, these tend to have a Severe expression i

  • low amount of sodium in the blood
  • increased eosinophils in the blood
  • confusion
  • suicidal thoughts
  • addiction to a drug
  • decreased lung function
  • bullous pemphigoid
  • erythema multiforme, a type of allergic skin reaction
  • a skin disorder with blistering and peeling skin called Stevens-Johnson syndrome
  • a condition with muscle tissue breakdown called rhabdomyolysis
  • fainting
  • swollen lymph nodes
  • abnormal liver function tests
  • a significant type of allergic reaction called anaphylaxis
  • a type of allergic reaction called angioedema
  • a hypersensitivity reaction to a drug
  • irritability
  • a yellowing of the eyes or skin from buildup of bilirubin called jaundice
  • multiple organ failure
  • a type of significant allergic skin reaction called DRESS syndrome

If experienced, these tend to have a Less Severe expression i

  • altered interest in having sexual intercourse
  • agitation
  • behavioral problems
  • pink eye
  • a stuffy and runny nose
  • indigestion
  • the inability to have an erection
  • enlarged breasts
  • difficulty concentrating
  • difficulty sleeping
  • fever
  • excessive sweating
  • pain
  • a skin rash
  • decreased appetite
  • headache
  • high blood sugar
  • increased creatine kinase levels
  • anxious feelings

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Selected from data included with permission and copyrighted by First Databank, Inc. This copyrighted material has been downloaded from a licensed data provider and is not for distribution, except as may be authorized by the applicable terms of use.

CONDITIONS OF USE: The information in this database is intended to supplement, not substitute for, the expertise and judgment of healthcare professionals. The information is not intended to cover all possible uses, directions, precautions, drug interactions or adverse effects, nor should it be construed to indicate that use of a particular drug is safe, appropriate or effective for you or anyone else. A healthcare professional should be consulted before taking any drug, changing any diet or commencing or discontinuing any course of treatment.