Caffeine / pheniramine / phenylephrine / sodium citrate / sodium salicylate and Mastussin DM Drug Interactions - Drugs.comDrug interactions between caffeine / pheniramine / phenylephrine / sodium citrate / sodium salicylate and Mastussin DMApplies to: Mastussin DM (dextromethorphan / guaifenesin) and caffeine / pheniramine / phenylephrine / sodium citrate / sodium salicylate
