It is about equal to codeine in depressing the cough reflex. In therapeutic dosage dextromethorphan does not inhibit ciliary activity. Promethazine is an H 1 receptor blocking agent. In addition ...
Background: Dextromethorphan (DM), the d-isomer of the codeine analog levorphanol, is an active ingredient present in a variety of cough and cold remedies. Recently, data generated from a study in ...
Acetaminophen 160mg, chlorpheniramine maleate 1mg, dextromethorphan HBr 5mg, phenylephrine HCl 2.5mg; per 5mL; susp; grape flavor. <4yrs (<36lbs): do not use. 4–5yrs (36lbs–47lbs): not ...
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