 Dextromethorphan pheniramine phenylephrine and Zymine HC Drug Interactions - Drugs.comDrug interactions between dextromethorphan pheniramine phenylephrine and Zymine HCApplies to: dextromethorphan pheniramine phenylephrine and Zymine HC hydrocodone pseudoephedrine triprolidineApplies to: Zymine HC hydrocodone pseudoephedrine triprolidine and dextromethorphan pheniramine phenylephrine 