Compare Neurontin vs. chlorpromazine

Head-to-head comparisons of medication uses, side effects, ratings, and more.

Neurontin (gabapentin)

Prescription only
Treats tingling and burning nerve pain.

Neurontin (gabapentin) is an old seizure disorder medicine that is now used to treat nerve-related pain caused by different conditions.

3.4/ 5 average rating with 620 reviewsforNeurontin
Stabilizes your mood.

Thorazine (chlorpromazine) has more side effects than other medicines like it. It is most useful during psychotic episodes because it slows you down quickly.

Upsides
  • Originally used to treat epilepsy (partial seizures), but now it primarily treats neuropathic pain that's caused by nerve stimulation or damage.
  • Studies show it's most effective for nerve pain from diabetes, shingles, and fibromyalgia (a painful muscle condition).
  • It's available as a generic, so it's less expensive than similar medications.
  • Acts fast to slow you down during a psychotic episode.
  • Can also be used for nausea or migraines.
  • Safe for use in children as young as 6 months.
  • Comes in a sugar-coated pill for easy administration.
Downsides
  • Neurontin (gabapentin) can cause some side effects, including memory problems, drowsiness, dizziness, or confusion. There is a higher risk for these side effects if you drink alcohol, so it might not be the best medication for heavy drinkers.
  • You can't skip or miss doses since suddenly stopping Neurontin (gabapentin) can cause seizures.
  • Has more side effects than other medicines like it.
  • Can affect how your other medicines work.
  • Makes you more sensitive to the sun.
  • Can make you dizzy or lightheaded, especially when injected.
  • Cannot be stopped right away.
Used for
Dosage forms
  • Pill
  • Oral solution
  • Extended release
  • Pill
  • Injection
Price
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Reviews
620 reviews so far
57%
saidit'sworth it
40%
saiditworked well
19%
saidit'sa big hassle

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Side effects
The Neurontin (gabapentin) FDA package insert doesn’t have numbers about how common side effects are.
The Thorazine (chlorpromazine) FDA package insert doesn’t have numbers about how common side effects are.
Risks and risk factors
  • Suicidal thoughts or behavior
  • Neurologic and psychiatric side effects (children)
    • Children ages 3 to 12
  • Serious allergic reaction and multiple organ problems
  • Driving impairment
    • Taking Neurontin (gabapentin) with alcohol
    • Taking other medicines that cause dizziness and/or drowsiness
  • Withdrawal seizures
    • Stopping Neurontin (gabapentin) suddenly
See more detailed risks and warnings
  • Increased risk of death
    • People over 65 with dementia and psychosis
  • Difficulty controlling movements
  • Neuroleptic malignant syndrome
    • Taking antipsychotic medications
  • Breathing problems
    • Asthma
    • COPD
    • Acute respiratory infections
  • Heat stroke and dehydration
    • Benign prostatic hypertrophy (BPH)
    • Urinary retention
    • Decreased movement in the intestines
See more detailed risks and warnings