Drug Index


Mechanism :

It is a high potency phenothiazine having minimum autonomic actions (hypotension, sedation). It is used in the treatment of mania, schizophrenia. It is contraindicated in children less than 6 years of age.

Indication :

  • Schizophrenia
  • Short-term treatment of certain types of anxiety

Contraindications :

Allergic to any ingredient in trifluoperazine or to other phenothiazines (e.g. chlorpromazine)

Severe drowsiness, decreased bone marrow function, blood problems, or liver damage.

Large amounts of alcohol or medicines that may cause drowsiness, such as barbiturates (e.g., phenobarbital) or narcotic pain medicines (e.g., codeine).

Astemizole, cabergoline, cisapride, metoclopramide, pergolide, terfenadine, or tramadol.

Dosing :

6 to 12 years (patients who are hospitalized or under close supervision):
Initial dose:
1 mg once or twice a day. Dosage may be increased gradually until symptoms are controlled or until side effects become troublesome. Max: 15 mg/day.
>12 years:
2-5 mg every 12 hours. May increase to 15-20 mg/day. Max: 40 mg/day.

Adverse Effect :

Dry mouth, constipation, convulsions, extrapyramidal reactions, drowsiness.

Interaction :

Citalopram: Combining these medications can increase the risk of an irregular heart rhythm that may be serious.
Metoprolol: Trifluoperazine and metoprolol may have additive effects in lowering your blood pressure. You may experience headache, dizziness, light-headedness, fainting, and/or changes in pulse or heart rate. These side effects are most likely to be seen at the beginning of treatment.

Renal Dose :

Dose in Renal Impairment GFR (mL/min)
20-50Dose as in normal renal function. Start with low dose
10-20Dose as in normal renal function. Start with low dose
<10Dose as in normal renal function. Start with low dose

Dose in Patients undergoing Renal Replacement Therapies
CAPDNot dialysed. Dose as in GFR<10 mL/min
HDNot dialysed. Dose as in GFR<10 mL/min
HDF/High fluxUnknown dialysability. Dose as in GFR<10 mL/min
CAV/VVHDUnlikely to be dialysed. Dose as in GFR=10–20 mL/min

Hepatic Dose :

Dose adjustment guidelines are not available. However in patients’ with significant hepatic impairment this drug’s use is contraindicated.
11/07/2020 19:55:34 Trifluoperazine
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