The pharmacokinetics of promethazine hydrochloride after administration of rectal suppositories at three dosage strengths and oral syrup were studied. The study had an open-label, randomized ...
Codeine phosphate 10mg, promethazine HCl 6.25mg; per 5mL; syrup; contains alcohol 7%. Risk of life-threatening respiratory depression and death related to ultra-rapid metabolizers of codeine (esp.
Promethazine HCl 25mg/mL, 50mg/mL; sol for IM or IV inj; contains sulfites. Sulfite sensitivity. CNS depression. Impaired respiratory function (eg, COPD, sleep apnea). Narrow-angle glaucoma. GI or ...
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The pharmacokinetics of promethazine administered in oral syrup and rectal suppositories were highly variable, but, in general, the suppositories produced a lower C max and later t max than the syrup.