Compare Neurontin vs. Zyprexa

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

Neurontin
(gabapentin)

Zyprexa
(olanzapine)

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.Helps control your thoughts and mood. Zyprexa (olanzapine) is good for treating psychosis, mania, and agitation, but it's more likely to cause weight gain and sleepiness than other antipsychotics.
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Coupons for Neurontin
Best available price for 90 (300mg) capsules of gabapentin
Reviews & ratings
Filter group. All currently selected
Filter group. All currently selected
4.56Neurontin
Reviews for Neurontin
57%
of people (All ages) say Neurontin 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 Zyprexa
41%
+16% better vs. Neurontin
51%
-11% worse vs. Neurontin
51%
+32% better vs. Neurontin
Have you used Zyprexa (olanzapine)?
Worth itNot sureNot worth it
Side effects
NeurontinZyprexa
  • 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 »
  • Dizziness 7%
  • Constipation 6%
  • Personality disorder 4%
  • Weight gain 5%
  • Feeling dizzy/faint when standing up 3%
  • Akathisia (can't sit still) 4%
  • Drowsiness 22%
  • Dry mouth 15%
  • Weakness 9%
  • Stomach problems 6%
More Zyprexa side effects »
How it works
NeurontinZyprexa
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.Zyprexa (olanzapine) is an atypical antipsychotic. Researchers don't know exactly how it works. It seems to change chemical activity (like dopamine and serotonin) in your brain, which affects thoughts and mood.
Type of medication
NeurontinZyprexa
Prescription onlyPrescription only
Available as
NeurontinZyprexa
  • Pill
  • Oral solution
  • Pill
  • Dissolving tablet
  • Injection
Used for
NeurontinZyprexa
Risk factors for serious side effects
NeurontinZyprexa
  • Children ages 3 to 12
  • Taking with alcohol or drugs
  • Stopping Neurontin (Gabapentin) suddenly
Detailed Neurontin (gabapentin) risks & warnings »
  • Elderly patients with dementia
  • History of heart problems
  • Drug interactions
  • People with diabetes
  • People with high cholesterol
Detailed Zyprexa (olanzapine) 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.

Food
NeurontinZyprexa
  • Take the extended-release tablet with food.
No food related info.
Pain
NeurontinZyprexa
  • Studies show it's most effective for nerve pain from diabetes, shingles, and fibromyalgia (a painful muscle condition).
No pain related info.
Sleep
NeurontinZyprexa
  • Neurontin (Gabapentin) is likely to cause some side effects, including memory problems, drowsiness, dizziness, or confusion.
  • Can cause dizziness and drowsiness.
  • Might make you more sleepy than some antipsychotics.
Weight
NeurontinZyprexa
No weight related info.
  • Zyprexa (olanzapine) is more likely to raise your blood sugar and cholesterol compared to other antipsychotic medications. Zyprexa (olanzapine) can also cause you to gain weight. Exercise and eat healthy food to lower your risk.
  • May cause weight gain and increased cholesterol or blood sugar.
  • More likely to cause weight gain and increase cholesterol or blood sugar compared to other antipsychotics.
Upsides and benefits
NeurontinZyprexa
  • 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.
  • Effective at relieving psychotic symptoms, manic episodes, and agitation in people with schizophrenia and bipolar disorder.
  • Less likely to cause heart problems than other antipsychotics.
  • Less likely to cause movement problems compared to older antipsychotics.
Downsides and risks
NeurontinZyprexa
  • 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.
  • More likely to cause weight gain and increase cholesterol or blood sugar compared to other antipsychotics.
  • Might make you more sleepy than some antipsychotics.
  • Mild risk of Extrapyramidal Symptoms (EPS): Movement disorders that include stiffness, tremor, restlessness, and slow, repetitive movements you can't control.
  • You may need routine blood tests to check how the medicine is affecting your body..
Tips from our pharmacists for people taking the medication
NeurontinZyprexa
  • 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.
  • Takes at least 4 to 6 weeks to see full effects on thoughts and mood.
  • Can cause dizziness and drowsiness.
  • For the first week, avoid activities that require you to be alert.
  • May cause weight gain and increased cholesterol or blood sugar.
  • Report any unusual thoughts, inability to control muscle movements, or fever and excess sweating to your doctor.
  • Elderly people with dementia shouldn't take Zyprexa (olanzapine).
Learn more
More about NeurontinSide effectsReviews & ratingsAlternativesFDA package insert
Have you used Neurontin (gabapentin)?
Worth itNot sureNot worth it
More about ZyprexaSide effectsReviews & ratingsAlternativesFDA package insert
Have you used Zyprexa (olanzapine)?
Worth itNot sureNot worth it