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.

Frequently asked questions

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