MUCINEX (GUAIFENESIN) TABLET, EXTENDED RELEASE [PROFICIENT RX LP] Home MUCINEX (GUAIFENESIN) TABLET, EXTENDED RELEASE [PROFICIENT RX LP] MUCINEX (GUAIFENESIN) TABLET, EXTENDED RELEASE [PROFICIENT RX LP] PDF | XML NDC 63187-954-40 Set ID f3ade814-2759-4ad0-a196-210e84d8cde9 Generic Name Product Class Product Number Application Number NDA021282 Related Drugs MUCINEX ER 600 MG TABLET PROFICIENT RX L based on 0 rating Search DailyMed Drugs