Gabapentin can cause a reaction called anticonvulsant hypersensitivity syndrome. This syndrome can be life-threatening. Call your doctor right away if you have a rash, a fever, and swollen lymph nodes.
Gabapentin can cause also cause a severe allergic reaction. Symptoms can include:
- trouble breathing
- swelling of your throat or tongue
- hives
- rash
Don’t take this drug again if you have ever had an allergic reaction to it before. Taking it a second time after any allergic reaction to it could be fatal (cause death).
COMMON side effects
If experienced, these tend to have a Severe expression
- Loss Of Muscle Coordination
- Nystagmus, A Condition With Involuntary Eye Movements
If experienced, these tend to have a Less Severe expression
- Dizziness
- Drowsiness
- Fluid Retention In The Legs, Feet, Arms Or Hands
- Inducing Of A Relaxed Easy State
- Low Energy
INFREQUENT side effects
If experienced, these tend to have a Severe expression
- Depression
- Feelings Of Hostility
- Memory Loss
- Mental Status Changes
- Mood Changes
- Trouble Breathing
If experienced, these tend to have a Less Severe expression
- A Bacterial Infection Of The Middle Ear
- A Feeling Of General Discomfort Called Malaise
- A Type Of Speech Disorder Called Dysarthria
- An Infection Due To A Virus
- Backache
- Blurred Vision
- Constipation
- Cough
- Diarrhea
- Double Vision
- Dry Mouth
- Generalized Weakness
- Hyperactive Behavior
- Lazy Eye
- Muscle Tremors
- Nausea
- Throat Dryness
- Throat Irritation
- Vomiting
- Weight Gain
RARE side effects
If experienced, these tend to have a Severe expression
- A Condition With Muscle Tissue Breakdown Called Rhabdomyolysis
- A Hypersensitivity Reaction To A Drug
- A Significant Type Of Allergic Reaction Called Anaphylaxis
- A Skin Disorder With Blistering And Peeling Skin Called Stevens-Johnson Syndrome
- A Type Of Allergic Reaction Called Angioedema
- A Type Of Significant Allergic Skin Reaction Called DRESS Syndrome
- A Yellowing Of The Eyes Or Skin From Buildup Of Bilirubin Called Jaundice
- Abnormal Liver Function Tests
- Bullous Pemphigoid
- Confusion
- Decreased Lung Function
- Erythema Multiforme, A Type Of Allergic Skin Reaction
- Fainting
- Increased Eosinophils In The Blood
- Irritability
- Low Amount Of Sodium In The Blood
- Multiple Organ Failure
- Suicidal Thoughts
- Swollen Lymph Nodes
If experienced, these tend to have a Less Severe expression
- A Skin Rash
- A Stuffy And Runny Nose
- Agitation
- Altered Interest In Having Sexual Intercourse
- Anxious Feelings
- Behavioral Problems
- Decreased Appetite
- Difficulty Concentrating
- Difficulty Sleeping
- Enlarged Breasts
- Excessive Sweating
- Fever
- Headache
- High Blood Sugar
- Increased Creatine Kinase Levels
- Indigestion
- Pain
- Pink Eye
- The Inability To Have An Erection