MUCUS RELIEF SEVERE CONGESTION AND COUGH MAXIMUM STRENGTH (Dextromethorphan Hbr, Guaifenesin, Phenylephrine Hcl) Liquid [CVS Pharmacy] MUCUS RELIEF SEVERE CONGESTION AND COUGH MAXIMUM STRENGTH (Dextromethorphan Hbr, Guaifenesin, Phenylephrine Hcl) Liquid [CVS Pharmacy]Source: DailyMed Drug Label UpdatesPublished on 2018-09-26