Codeine Interactions

Concomitant use increases risk of respiratory depression due to actions at different CNS receptor sites.

Source: NLP:alprazolam

Quinidine-mediated inhibition of CYP2D6 may prevent conversion to active metabolite morphine, reducing analgesic/antitussive effects.

Source: NLP:dextromethorphan hydrobromide and quinidine sulfate

Additive CNS depressant effects observed in clinical study. Caution must be used when administering nabilone in combination with CNS depressants.

Source: NLP:nabilone

Terazosin has been used concomitantly with codeine in at least 50 patients with no interactions observed.

Source: NLP:terazosin

Used concomitantly with terazosin in at least 50 patients with no interactions observed.

Source: NLP:terazosin hydrochloride