Compare fluphenazine vs. trifluoperazine

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

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Prolixin (fluphenazine)

Prescription only
Treats schizophrenia and psychosis.

Prolixin (fluphenazine) can stabilize your mood. It is used to find the right dose for you before moving to a long-acting injection.

Treats anxiety and schizophrenia.

Stelazine (trifluoperazine) can be used to treat schizophrenia, but you might have trouble controlling your movements.

Upsides
  • Good at stabilizing your mood.
  • Available in several oral and injectable forms, including a long-acting injection that is taken less frequently.
  • Stelazine (trifluoperazine) is one of the recommended medicines for schizophrenia.
  • It’s approved in children age 6 and older.
  • Available in generic.
  • Compared to other similar medicines, you're less likely to feel dehydrated or have problems with your heart with Stelazine (trifluoperazine).
Downsides
  • Can make you sensitive to the sun.
  • Can affect how your body regulates your temperature.
  • Can make it difficult for you to control your movements if you've been on Prolixin (fluphenazine) for a while.
  • If you take Stelazine (trifluoperazine) for more than 12 weeks or are taking high doses of Stelazine (trifluoperazine), you’re at a higher risk for being unable to control your movements.
  • Stelazine (trifluoperazine) can cause agitation and trouble sleeping. These symptoms can sometimes disappear, or there are other treatments you can take to help.
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Used for
Dosage forms
  • Pill
  • Liquid
  • Injection
  • Pill
Price
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Reviews
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Side effects
The Prolixin (fluphenazine) FDA package insert doesn’t have numbers about how common side effects are.
The Stelazine (trifluoperazine) FDA package insert doesn’t have numbers about how common side effects are.
Risks and risk factors
  • Increased risk of death
    • People over 65 with dementia and psychosis
  • Difficulty controlling movements
  • Neuroleptic malignant syndrome
    • Taking antipsychotic medications
  • Low white blood cell count
See more detailed risks and warnings
  • Higher risk of death in people age 65 and older with dementia
    • People age 65 and older with dementia and psychosis
  • Difficulty controlling movements
    • Women age 65 and older
  • Neuroleptic malignant syndrome
    • Taking antipsychotic medications
  • Changes in blood cell counts
    • History of low white or red blood cell counts
  • Liver damage
  • Low blood pressure and higher risk of falls
See more detailed risks and warnings