Guaifenesin Dosage
Medically reviewed by Drugs.com. Last updated on Dec 21, 2023.
Applies to the following strengths: 200 mg/5 mL; 200 mg; 100 mg/5 mL; 50 mg/5 mL; 600 mg; 1200 mg; 400 mg; 100 mg; 800 mg; 1000 mg; 300 mg; 575 mg; 50 mg
Usual Adult Dose for:
Usual Pediatric Dose for:
Additional dosage information:
Usual Adult Dose for Cough
Immediate release formulation: 200 to 400 mg orally every 4 hours as needed, not to exceed 2.4 g/day
Sustained release formulation: 600 to 1200 mg orally every 12 hours, not to exceed 2.4 g/day
Usual Pediatric Dose for Cough
Immediate release formulation:
less than 2 years: 12 mg/kg/day orally in 6 divided doses
2 to 5 years: 50 to 100 mg orally every 4 hours as needed, not to exceed 600 mg/day
6 to 11 years: 100 to 200 mg orally every 4 hours as needed, not to exceed 1.2 g/day
12 years or older: 200 to 400 mg orally every 4 hours as needed, not to exceed 2.4 g/day
Sustained release formulation:
2 to 5 years: 300 mg orally every 12 hours, not to exceed 600 mg/day
6 to 11 years: 600 mg orally every 12 hours, not to exceed 1.2 g/day
12 years or older: 600 to 1200 mg orally every 12 hours, not to exceed 2.4 g/day
Renal Dose Adjustments
Data not available
Liver Dose Adjustments
Data not available
Dialysis
Data not available
Other Comments
Guaifenesin should be administered with plenty of fluids.
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Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.
