Acetaminophen. Dextromethorphan HBr, doxylamine succinate. Pain reliever; fever reducer; cough suppressant; antihistamine. Compare to the active ingredients in Vicks NyQuil (This product is not manufactured or distributed by Procter & Gamble, owner of the registered trademark Vicks NyQuil). This product does not contain phenylpropanolamine (PPA).