Syn-Rx Syn-Rx OverviewUpdated: November 8, 2013 Syn-Rx is a brand name medication included in a group of medications called Expectorants. How was your experience with Syn-Rx? First, a little about yourself Male Female Age: Tell us about yourself in a few words? / Next What tips would you provide a friend before taking Syn-Rx? / What are you taking Syn-Rx for? Choose one OtherAsthmaBronchitisCommon ColdCoughLaryngitisPharyngitisRhinitis, Allergic, PerennialSinusitisWhooping Cough How long have you been taking it? Choose one Less than a week A couple weeks A month or so A few months A year or so Two years or more Back Next How well did Syn-Rx work for you? Did you experience many side effects while taking this drug? How likely would you be to recommend Syn-Rx to a friend? Back Submit Syn-Rx Drug ClassBack to TopSyn-Rx is part of the drug class:Expectorants