A double-blind , parallel , placebo-controlled study was performed to assess the efficacy of a combination drug product containing the antihistamine , triprolidine , and the sympathomimetic , pseudoephedrine , in the treatment of allergic rhinitis .
An evaluation of triprolidine and pseudoephedrine in the treatment of allergic rhinitis.  A double-blind , parallel , placebo-controlled study was performed to assess the efficacy of a combination drug product containing the antihistamine , triprolidine , and the sympathomimetic , pseudoephedrine , in the treatment of allergic rhinitis . Allergic rhinitis was defined on the basis of coexistent nasal congestion and an aggregate symptom complex score which exceeded a pre-established value. pseudoephedrine and triprolidine were shown to make distinct and separate contributions to the treatment of allergic rhinitis defined in this manner.
### Instruction:
            Given the context about compound efficacy for the given treatment mentioned within the input, mentioned the compounds 
            that can co-occur for the mentioned treatment

            ### Input:
            An evaluation of triprolidine and pseudoephedrine in the treatment of allergic rhinitis.  A double-blind , parallel , placebo-controlled study was performed to assess the efficacy of a combination drug product containing the antihistamine , triprolidine , and the sympathomimetic , pseudoephedrine , in the treatment of allergic rhinitis . Allergic rhinitis was defined on the basis of coexistent nasal congestion and an aggregate symptom complex score which exceeded a pre-established value. pseudoephedrine and triprolidine were shown to make distinct and separate contributions to the treatment of allergic rhinitis defined in this manner.

            ### Response:
            triprolidine, pseudoephedrine
            