 Dexchlorpheniramine dextromethorphan phenylephrine pyrilamine and phenylephrine triprolidine Drug Interactions - Drugs.comDrug interactions between dexchlorpheniramine dextromethorphan phenylephrine pyrilamine and phenylephrine triprolidineApplies to: dexchlorpheniramine dextromethorphan phenylephrine pyrilamine and phenylephrine triprolidine 