Guaifenesin
Generic name: guaifenesin · Brand names: Guaifenesin
Expectorant [epc]Class III recall · Ongoing
Crystallization: Lack of uniformity - a change in texture, chunky, grainy, and small crystal substances inside the bottles.
Posted September 25, 2024. Check lot numbers with your pharmacy before taking Guaifenesin. View FDA recall notices.
Information sourced from FDA Structured Product Labeling, updated June 8, 2026.
What is it used for?
Uses helps loosen phlegm (mucus) and thin bronchial secretions to rid the bronchial passageways of bothersome mucus and make coughs more productive
How to take it
Directions do not exceed 6 doses in 24 hours take with a full glass of water adults and children 12 years and over 1 to 2 tablets every 4 hours children 6 to under 12 years ½ to 1 tablet every 4 hours children under 6 years ask a doctor
Warnings
Warnings Ask a doctor before use if you have cough accompanied by too much phlegm (mucus) persistent or chronic cough such as occurs with smoking, asthma, chronic bronchitis, or emphysema Stop use and ask a doctor if cough persists more than 7 days, tends to recur, or is accompanied by a fever, rash, or persistent headache. These could be signs of a serious condition. If pregnant or breast-feeding, ask a health professional before use.
Keep out of reach of children. In case of overdose, get medical help or contact a Poison Control Center right away.
All information on this site is provided “as-is” for informational purposes only and is not a substitute for medical advice or treatment. You should consult with a medical professional if you have any questions about your health. Source: FDA Structured Product Labeling.