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Perphenazine

Pronounced

"per-FEN-a-zeen"

Common brand names:

Phenazine, Trilafon

Uses

This medication is used to treat certain mental/mood disorders (such as schizophrenia, manic phase of bipolar disorder, schizoaffective disorder). Perphenazine belongs to a class of drugs known as antipsychotics. It works by helping to restore the balance of certain natural substances in the brain.

How to Use This Medication

Take this medication by mouth with or without food as directed by your doctor, usually 1 to 3 times a day.

The dosage is based on your medical condition and response to treatment. Your doctor may direct you to take a low dose at first, gradually increasing the dose to lower the chance of side effects (such as muscle spasms). Follow your doctor's directions carefully.

Take this medication regularly to get the most benefit from it. To help you remember, take it at the same time(s) each day.

Although you may notice some medication effects soon after starting, it may take as much as 4 to 6 weeks of regular use to see the full benefit. Do not stop taking this medication without consulting your doctor. Your condition may become worse when the drug is suddenly stopped. Your dose may need to be gradually decreased.

Tell your doctor if your condition does not improve or if it worsens.

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Drug information is selected from data included with permission and copyrighted by First DataBank, Inc. This is a summary and does not contain all possible information about this product. For complete information about this product or your specific health needs, ask your healthcare professional. Always seek the advice of your healthcare professional if you have any questions about this product or your medical condition. This information is not intended as individual medical advice and does not substitute for the knowledge and judgment of your healthcare professional. This information does not contain any assurances that this product is safe, effective or appropriate for you.

This information is intended only for residents of the United States. Products sold under the same brand names in other countries may contain different ingredients.

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Information expires December 2025.