Each rectal suppository contains 12.5 mg or 25 mg promethazine HCl with ascorbyl palmitate, cocoa butter, colloidal silicon dioxide, and white wax. Promethazine Hydrochloride Suppositories are for rectal administration only.
Promethazine is used in the treatment of nausea/vomiting; vertigo; motion sickness; sedation; hay fever, and belongs to the drug classes antihistamines, phenothiazine antiemetics.
Haldol (halperidol) is used in the treatment of psychosis; dementia; nausea/vomiting; mania; tourette's syndrome, and belongs to the drug class miscellaneous antipsychotic agents.
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