Clinical decision-support only. For use by licensed dental professionals. Not a substitute for professional judgment or a complete drug reference. Always verify with primary sources.
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Medication

Prochlorperazine

Antiemetic (phenothiazine, dopamine antagonist)

Brand names: Compazine

Oral health effects

  • Acute dystonia / xerostomia

    Can cause acute dystonic reactions (including tongue/jaw) and dry mouth; tardive dyskinesia with prolonged use.

    Mechanism: Central dopamine-receptor antagonism.

    Clinical management: Recognize acute dystonia (may need medical reversal); manage dry mouth.

  • Orthostatic (postural) hypotension

    Prochlorperazine can cause hypotension. The label warns of postural hypotension, somnolence and motor instability that may lead to falls; older adults are more sensitive.

    Clinical management: Raise the chair slowly at the end of the appointment and let the patient sit upright for a minute or two before standing. Assist elderly patients.

Sources

  1. A Guide to Medications Inducing Salivary Gland Dysfunction, Xerostomia, and Subjective Sialorrhea: A Systematic Review Sponsored by the World Workshop on Oral Medicine VI. Wolff A, Joshi RK, Ekström J, et al. Drugs in R&D, 2017.
  2. A review and guide to drug-associated oral adverse effects-Dental, salivary and neurosensory reactions. Part 1. Teoh L, Moses G, McCullough MJ. Journal of oral pathology & medicine : official publication of the International Association of Oral Pathologists and the American Academy of Oral Pathology, 2019.
  3. Prochlorperazine maleate prescribing information (FDA label) REMEDYREPACK INC. / DailyMed, 2026.