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INDICATIONS AND USAGE
For control of severe nausea and vomiting.
For the treatment of schizophrenia.
Prochlorperazine is effective for the short-term treatment of generalized non-psychotic anxiety. However, prochlorperazine is not the first drug to be used in therapy for most patients with non-psychotic anxiety, because certain risks associated with its use are not shared by common alternative treatments (e.g., benzodiazepines).
When used in the treatment of non-psychotic anxiety, prochlorperazine should not be administered at doses of more than 20 mg per day or for longer than 12 weeks, because the use of prochlorperazine at higher doses or for longer intervals may cause persistent tardive dyskinesia that may prove irreversible (see WARNINGS).
The effectiveness of prochlorperazine as treatment for non-psychotic anxiety was established in 4 week clinical studies of outpatients with generalized anxiety disorder. This evidence does not predict that prochlorperazine will be useful in patients with other non-psychotic conditions in which anxiety, or signs that mimic anxiety, are found (e.g., physical illness, organic mental conditions, agitated depression, character pathologies, etc.).
Prochlorperazine has not been shown effective in the management of behavioral complications in patients with mental retardation.
DESCRIPTION
Prochlorperazine is a phenothiazine derivative, present in prochlorperazine tablets as the maleate. Prochlorperazine maleate is designated chemically as 2-chloro-10-[3-(4-methyl-1- piperazinyl)propyl] phenothiazine maleate and has the following structural formula:

C
20H
24ClN
3S•2C
4H
4O
4 M.W. 606.10
Prochlorperazine maleate is classified as an anti-emetic and antipsychotic agent. Prochlorperazine maleate is white or pale yellow, practically odorless, crystalline powder. It is practically insoluble in water and in alcohol; slightly soluble in warm chloroform.
Each tablet, for oral administration contains prochlorperazine maleate equivalent to 5 mg or 10 mg of prochlorperazine. In addition, each tablet contains the following inactive ingredients: microcrystalline cellulose, hypromellose, lactose monohydrate, magnesium stearate, polydextrose, polyethylene glycol, pregelatinized starch, stearic acid, titanium dioxide, triacetin, and yellow iron oxide