Dextromethorphan / phenylephrine / thonzylamine and Trifed C Drug Interactions - Drugs.comDrug interactions between dextromethorphan / phenylephrine / thonzylamine and Trifed CApplies to: Trifed C (codeine / pseudoephedrine / triprolidine) and dextromethorphan / phenylephrine / thonzylamineApplies to: dextromethorphan / phenylephrine / thonzylamine and Trifed C (codeine / pseudoephedrine / triprolidine)
