 Pheniramine phenylpropanolamine phenyltoloxamine pyrilamine and Trifed C Drug Interactions - Drugs.comDrug interactions between pheniramine phenylpropanolamine phenyltoloxamine pyrilamine and Trifed CApplies to: pheniramine phenylpropanolamine phenyltoloxamine pyrilamine and Trifed C codeine pseudoephedrine triprolidineApplies to: Trifed C codeine pseudoephedrine triprolidine and pheniramine phenylpropanolamine phenyltoloxamine pyrilamine 