Guaifenesin for Cough & Cold
Medically reviewed by a licensed pharmacist · Last reviewed
Reviewed against: FDA OTC Monograph
Dose
200-400mg by mouth every 4 hours, OR extended-release 600-1200mg every 12 hours. Max 2400mg/day. Drink plenty of water.
What to watch for
Read the product label and ask a pharmacist if you take other medicines or have a health condition.
Not recommended in pregnancy — check with a pharmacist or your clinician first.
Not for children under 12.
Sources
- FDA OTC Monograph — FDA-OTC-Monograph-Guaifenesin-21CFR341
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Where to buy
This page is for general education and is not medical advice. It does not replace a consultation with a licensed pharmacist or your clinician. Always read and follow the product label. If symptoms are severe, worsening, or persistent, seek professional care.