Codeine Phosphate And Chlorpheniramine Maleate + Rifampin Interaction
Majorinteraction on record
Description
CYP3A4 inducer can result in lower codeine and morphine levels, decreasing efficacy or causing withdrawal syndrome. Avoid concomitant use.
Mechanism
Induction of CYP3A4 decreases codeine metabolism to morphine via CYP2D6
Source: NLP:codeine phosphate and chlorpheniramine maleate