 Acetaminophen caffeine phenylpropanolamine salicylamide and dexchlorpheniramine dextromethorphan phenylephrine pyrilamine Drug Interactions - Drugs.comDrug interactions between acetaminophen caffeine phenylpropanolamine salicylamide and dexchlorpheniramine dextromethorphan phenylephrine pyrilamineApplies to: dexchlorpheniramine dextromethorphan phenylephrine pyrilamine and acetaminophen caffeine phenylpropanolamine salicylamide 