.

DEXTROMETHORPHAN AND NSAIDS

Medical Diagnosis and Drugs, Medications
The manufacturers say that valdecoxib (the pro-drug of parecoxib) caused a 3-fold increase in the serum levels of dextromethorphan.
D If the combination is thought necessary, a low dose of dextromethorphan is
advisable. Concurrent use should be well-monitored for evidence of toxicity.
(29)