 Carbetapentane pseudoephedrine and dexchlorpheniramine dextromethorphan phenylephrine pyrilamine Drug Interactions - Drugs.comDrug interactions between carbetapentane pseudoephedrine and dexchlorpheniramine dextromethorphan phenylephrine pyrilamineApplies to: dexchlorpheniramine dextromethorphan phenylephrine pyrilamine and carbetapentane pseudoephedrine 