Guaifenesin (gwi fen' ə sin) (INN) or guaiphenesin (former BAN) is an expectorant drug usually taken orally to assist the expectoration ("bringing up") of phlegm from the airways in acute respiratory tract infections. Guaifenesin works by drawing water into the bronchi. The water both thins mucus and lubricates the airway, facilitating the removal of mucus by coughing. It is sold under several brand names such as Guailife, Humibid, Mucinex, and Robitussin, and it also is included in many over-the-counter cough and cold remedies.

Guaifenesin's molecular formula is C₁₀H₁₄O₄, and its chemical name is 3-(2-methoxyphenoxy)-1,2-propanediol. Its CAS number is 93-14-1. It was first approved by the Food and Drug Administration (FDA) in 1952.

Guaifenesin is also used in the experimental guaifenesin protocol in the treatment of fibromyalgia.

More on [ Guaifenesin ]

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FDA Warning Letter Issued to Branitz, Bruce, MD on 09 Apr 2009 by Center for Drug Evaluation and Research
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CFDA: FDA Latest Drug GCP Warning Letters

WL Issued to Coast Institutional Review Board
FDA Tue, 14 Apr 2009 00:00:00 -0400
FDA Warning Letter Issued to Coast Institutional Review Board on 14 Apr 2009 by Center for Drug Evaluation and Research
WL Issued to Branitz, Bruce, MD
FDA Thu, 09 Apr 2009 00:00:00 -0400
FDA Warning Letter Issued to Branitz, Bruce, MD on 09 Apr 2009 by Center for Drug Evaluation and Research
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FDA Warning Letter Issued to Bukowski, Ronald M, MD on 30 Mar 2009 by Center for Drug Evaluation and Research
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FDA Warning Letter Issued to Youabian, Inc on 17 Mar 2009 by Los Angeles District Office
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FDA Warning Letter Issued to Paulson, Daniel M., MD on 11 Mar 2009 by Center for Drug Evaluation and Research

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