About guaifenesein
Expectorant
Used for
- Helps loosen mucus and relieve chest congestion from colds or respiratory infections.
Usual adult dose
Adults and ages 12+: 600–1,200 mg every 12 hours; maximum 2,400 mg daily.
Usual dose in children
Ages 6–11: 200–400 mg every 12 hours; maximum 1,200 mg daily. Not for children under 6 unless directed by a clinician.
Common side effects
- Nausea or vomiting
- Stomach discomfort
- Dizziness
- Headache
Important warnings
- Swallow extended-release tablets whole; do not crush or chew.
- Drink fluids to help loosen mucus.
- Seek medical advice for symptoms lasting over seven days, recurring, or accompanied by fever or rash.
- Check labels to avoid taking multiple products containing guaifenesin.
Pregnancy
Safety information is limited; use during pregnancy only after discussing it with a healthcare professional.
Breastfeeding
Information is limited; consult a healthcare professional before use while breastfeeding.
Interactions
- No major interactions are well established; check with a pharmacist about other medicines.
AI-generated from general medical knowledge, not from this product's official leaflet. It may be incomplete or out of date. Not medical advice — ask a pharmacist or doctor before making any decision.