MUCINEX DM (GUAIFENESIN AND DEXTROMETHORPHAN HYDROBROMIDE) TABLET, EXTENDED RELEASE [PREFERRED PHARMACEUTICALS INC.] Home MUCINEX DM (GUAIFENESIN AND DEXTROMETHORPHAN HYDROBROMIDE) TABLET, EXTENDED RELEASE [PREFERRED PHARMACEUTICALS INC.] MUCINEX DM (GUAIFENESIN AND DEXTROMETHORPHAN HYDROBROMIDE) TABLET, EXTENDED RELEASE [PREFERRED PHARMACEUTICALS INC.] PDF | XML NDC 68788-6340-2 Set ID 2d545c6f-30bf-4806-ada4-bbe55fe4625f Generic Name Product Class Product Number Application Number NDA021620 Related Drugs Search DailyMed Drugs