guaifenesin, Humibid, Humibid LA, Robitussin, Organidin NR, Fenesin, Mucinex

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GENERIC NAME: guaifenesin


DRUG CLASS AND MECHANISM: Guaifenesin is an expectorant, that is, a medication that promotes elimination of mucus from the lungs. The expectorant effects of guaifenesin promote elimination of mucous by thinning the mucous and lubricating the irritated respiratory tract. Guaifenesin is an ingredient in many over-the-counter cough and cold products. Guaifenesin was first approved by the FDA in 1952.



PREPARATIONS: Tablet (extended release): 600, and 1200 mg

STORAGE: Tablets, capsules, and syrup should be stored below 30 C (86 F). The liquid should not be refrigerated.

PRESCRIBED FOR: Guaifenesin is used for the treatment of cough associated with colds and minor upper respiratory tract infections in individuals 12 years and older.

DOSING: Guaifenesin may be taken with or without food. The tablets should be taken whole and should not be crushed, chewed, or broken. The recommended dose is 600-1200 every 12h hours up to a maximum of 2.4 g per day. Patients should consult a health care professional if symptoms last more than 7 days.

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