Compare Zyprexa vs. perphenazine

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

Zyprexa
(olanzapine)

Trilafon
(perphenazine)

Helps control your thoughts and mood. Zyprexa (Olanzapine) is good for treating psychosis, mania, and agitation. More likely to cause weight gain and sleepiness than other antipsychotics.Treats schizophrenia. Trilafon (perphenazine) is a good medicine for schizophrenia, but it can make you gain weight.
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Coupons for Zyprexa
Best available price for 30 (5mg) tablets of olanzapine
Coupons for perphenazine
Best available price for 30 (4mg) tablets of perphenazine
Reviews & ratings
Filter group. All currently selected
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5.09Zyprexa
Reviews for Zyprexa (olanzapine)
41%
of people (All ages) say Zyprexa (olanzapine) is worth it
51%
say it works well
51%
say it's a big hassle
Have you used Zyprexa (olanzapine)?
Worth itNot sureNot worth it
Reviews for Trilafon (perphenazine)
Not enough review data. Review it!
-41% worse vs. Zyprexa (olanzapine)
Not enough review data. Review it!
-51% worse vs. Zyprexa (olanzapine)
Not enough review data. Review it!
+51% better vs. Zyprexa (olanzapine)
Have you used Trilafon (perphenazine)?
Worth itNot sureNot worth it
Side effects
Zyprexaperphenazine
  • Dizziness 7%
  • Constipation 6%
  • Personality disorder 4%
  • Weight gain 5%
  • Positional low blood pressure 3%
  • Restlessness 4%
  • Drowsiness 22%
  • Dry mouth 15%
  • Muscle weakness 9%
  • Indigestion 6%
More Zyprexa side effects »

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

More about perphenazine side effects »
How it works
Zyprexaperphenazine
Zyprexa (Olanzapine) is an atypical antipsychotic. Researchers don't know exactly how it works. It seems to change dopamine and serotonin activity in your brain, which affects thoughts and mood.Trilafon (perphenazine) works by blocking dopamine from entering the brain too quickly. Schizophrenia might be caused by your brain being too sensitive to changes in dopamine in your body.
Type of medication
Zyprexaperphenazine
Prescription only
Prescription only
Available as
Zyprexaperphenazine
  • Pill
  • Dissolving tablet
  • Injection
  • Pill
Used for
Zyprexaperphenazine
Risk factors for serious side effects
Zyprexaperphenazine
  • Elderly patients with dementia
  • History of heart problems
  • Drug interactions
  • People with diabetes
  • People with high cholesterol
Detailed Zyprexa (olanzapine) risks & warnings »
  • People age 65 or older with dementia and psychosis
  • Drinking alcohol or taking narcotics
Detailed Trilafon (perphenazine) 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
Zyprexaperphenazine
No alcohol related info.
  • Don't drink alcohol or take any narcotics while on Trilafon (perphenazine), since it can slow your breathing.
Food
Zyprexaperphenazine
  • Zyprexa (Olanzapine) can increase your blood sugar and cholesterol. Zyprexa (Olanzapine) is more likely to raise your blood sugar and cholesterol compared to other antipsychotic medications. Exercise and eat healthy food to lower your risk.
  • Zyprexa (Olanzapine) can cause you to gain weight. Zyprexa (Olanzapine) is more likely to cause weight gain compared to other antipsychotic medications. Exercise and eat healthy food to lower your risk.
No food related info.
Sleep
Zyprexaperphenazine
  • Might make you more sleepy than some antipsychotics.
  • Can cause dizziness and drowsiness.
  • Trilafon (perphenazine) can make you feel sleepy the first few days that you take it. This can be worse if you drink alcohol or take narcotics for pain or other medical issues. Don't drive or do anything requiring concentration until you know how Trilafon (perphenazine) affects you.
Weight
Zyprexaperphenazine
  • More likely to cause weight gain and problems with cholesterol or blood sugar compared to other antipsychotics.
  • May cause weight gain and worsen cholesterol or blood sugar.
  • Zyprexa (Olanzapine) can cause you to gain weight. Zyprexa (Olanzapine) is more likely to cause weight gain compared to other antipsychotic medications. Exercise and eat healthy food to lower your risk.
  • You're more likely to gain weight.
Upsides and benefits
Zyprexaperphenazine
  • Effective at relieving psychotic symptoms, manic episodes, and agitation in people with schizophrenia and bipolar disorder.
  • Lowers relapse rates for schizophrenia and bipolar disorder.
  • Antipsychotic medicines are all about equally effective.
  • Less likely to cause heart problems than some antipsychotics.
  • Trilafon (perphenazine) can be much cheaper than other medicines.
  • Trilafon (perphenazine) is less likely to cause heart problems or changes in blood pressure.
Downsides and risks
Zyprexaperphenazine
  • More likely to cause weight gain and problems with 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, or involuntary movements.
  • You might need routine blood tests to check how the medicine is affecting your body.
  • All antipsychotics come with side effects that make them difficult to take. You might need to try a few different medicines until you find one that works for you and that you can tolerate.
  • You're more likely to gain weight.
  • You can be more sensitive to temperature changes.
  • You're more likely to catch colds and flu.
Tips from our pharmacists for people taking the medication
Zyprexaperphenazine
  • Takes 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 worsen 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 it.
  • You might be more sensitive to the sun and heat while taking Trilafon (perphenazine). Use sunscreen if you have to go outside and drink plenty of liquids.
  • Don't drink alcohol or take any narcotics while on Trilafon (perphenazine), since it can slow your breathing.
  • Stopping Trilafon (perphenazine) suddenly can be very dangerous. Talk to your doctor if you want to stop taking it.
  • Don't drive or do anything that requires concentration until you know how Trilafon (perphenazine) affects you.
  • Take Trilafon (perphenazine) with food to avoid stomach upset.
Learn more
More about ZyprexaSide effectsReviews & ratingsAlternativesFDA package insert
Have you used Zyprexa (olanzapine)?
Worth itNot sureNot worth it
More about perphenazineSide effectsAlternativesFDA package insert
Have you used Trilafon (perphenazine)?
Worth itNot sureNot worth it