Compare Neurontin vs. chlorpromazine

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

Neurontin
(gabapentin)

Thorazine
(chlorpromazine)

Treats tingling and burning nerve pain. Neurontin (Gabapentin) is an old seizure disorder medicine that's now used to treat nerve-related pain caused by different conditions.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.
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Coupons for Neurontin
Best available price for 90 (300mg) capsules of gabapentin
Coupons for chlorpromazine
Best available price for 60 (25mg) tablets of chlorpromazine
Reviews & ratings
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4.56Neurontin
Reviews for Neurontin (gabapentin)
57%
of people (All ages) say Neurontin (gabapentin) is worth it
40%
say it works well
19%
say it's a big hassle
620 reviews
Have you used Neurontin (gabapentin)?
Worth itNot sureNot worth it
Reviews for Thorazine (chlorpromazine)
Not enough review data. Review it!
-57% worse vs. Neurontin (gabapentin)
Not enough review data. Review it!
-40% worse vs. Neurontin (gabapentin)
Not enough review data. Review it!
+19% better vs. Neurontin (gabapentin)
Have you used Thorazine (chlorpromazine)?
Worth itNot sureNot worth it
Side effects
Neurontinchlorpromazine
  • Dizziness 21%
  • Drowsiness 16%
  • Leg or ankle swelling 6%
  • Muscle weakness 1%
  • Diarrhea 2%
  • Infection 2%
  • Dry mouth 3%
  • Constipation 2%
  • Accidental injury 2%
  • Vomiting 2%
More Neurontin side effects »

The chlorpromazine FDA package insert doesn’t have numbers about how common side effects are.

More about chlorpromazine side effects »
How it works
Neurontinchlorpromazine
Neurontin (Gabapentin) is an antiepileptic and nerve pain reliever. Researchers don't know exactly how it works, but it has a similar structure to GABA, a neurotransmitter that calms nerves in the brain and spinal cord.Thorazine (chlorpromazine) is a derivative of phenothiazine, which regulates dopamine levels in your brain to improve your mood.
Type of medication
Neurontinchlorpromazine
Prescription only
Prescription only
Available as
Neurontinchlorpromazine
  • Pill
  • Oral solution
  • Pill
  • Injection
Used for
Neurontinchlorpromazine
Risk factors for serious side effects
Neurontinchlorpromazine
  • Children ages 3 to 12
  • Taking with alcohol or drugs
  • Stopping Neurontin (Gabapentin) suddenly
Detailed Neurontin (gabapentin) risks & warnings »
  • People over 65 with dementia and psychosis
  • Taking antipsychotic medications
  • Asthma
  • COPD
  • Acute respiratory infections
Detailed Thorazine (chlorpromazine) risks & warnings »
Pregnancy

Research studies with animals found harmful effects on unborn babies. It hasn’t been properly studied in humans. The benefits might outweigh the risks even if you’re pregnant. Talk with your doctor.

The FDA hasn’t classified this medicine’s effects on unborn babies. Talk with your doctor about this medicine if you’re pregnant or planning on it.

Alcohol
Neurontinchlorpromazine
No alcohol related info.
  • Don't combine with alcohol or narcotics because it can cause you to stop breathing.
Food
Neurontinchlorpromazine
  • Take the extended-release tablet with food.
No food related info.
Pain
Neurontinchlorpromazine
  • Studies show it's most effective for nerve pain from diabetes, shingles, and fibromyalgia (a painful muscle condition).
No pain related info.
Sleep
Neurontinchlorpromazine
  • Neurontin (Gabapentin) is likely to cause some side effects, including memory problems, drowsiness, dizziness, or confusion.
  • Can make you very sleepy so don't drive or do anything that requires concentration until you know how it affects you.
Upsides and benefits
Neurontinchlorpromazine
  • 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 and risks
Neurontinchlorpromazine
  • Neurontin (Gabapentin) is likely to cause some side effects, including memory problems, drowsiness, dizziness, or confusion.
  • You can't skip or miss doses since suddenly stopping Neurontin (Gabapentin) can cause seizures. This is even more likely if you drink alcohol, so it might not be the best medication for heavy drinkers.
  • 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.
Tips from our pharmacists for people taking the medication
Neurontinchlorpromazine
  • Side effects are common, but usually manageable.
  • Don't drive while taking Neurontin (Gabapentin) until you know how the medication affects you.
  • Neurontin and generic forms of Gabapentin have the same ingredients as Gralise and Horizant, but are dosed differently. Make sure you know which form you're taking since they are used for different purposes.
  • Take the extended-release tablet with food.
  • Stop taking Neurontin (Gabapentin) slowly over at least one week to avoid getting withdrawal symptoms.
  • Can make you very sleepy so don't drive or do anything that requires concentration until you know how it affects you.
  • Can cause involuntary muscle movements just like other medicines for your mood.
  • Can dry you out and make you more sensitive to the sun.
  • Don't combine with alcohol or narcotics because it can cause you to stop breathing.
  • Cannot be stopped suddenly.
Learn more
More about NeurontinSide effectsReviews & ratingsAlternativesFDA package insert
Have you used Neurontin (gabapentin)?
Worth itNot sureNot worth it
More about chlorpromazineSide effectsAlternativesFDA package insert
Have you used Thorazine (chlorpromazine)?
Worth itNot sureNot worth it