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Dextromethorphan / Guaifenesin / Pseudoephedrine Dosage

Medically reviewed by Drugs.com. Last updated on Dec 4, 2020.

Applies to the following strengths: 10 mg-100 mg-30 mg; 10 mg-200 mg-30 mg; 10 mg-100 mg-30 mg/5 mL; 6 mg-40 mg-2 mg/mL; 5 mg-100 mg-15 mg/5 mL; 15 mg-200 mg-30 mg/5 mL; 5 mg-50 mg-15 mg/5 mL; 30 mg-600 mg-60 mg; 20 mg-400 mg-60 mg; 15 mg-100 mg-30 mg/5 mL; 30 mg-600 mg-45 mg; 32 mg-595 mg-48 mg; 15 mg-100 mg-45 mg/5 mL; 15 mg-100 mg-40 mg/5 mL; 30 mg-800 mg-45 mg; 60 mg-800 mg-90 mg; 30 mg-800 mg-60 mg; 15 mg-200 mg-32 mg/5 mL; 60 mg-800 mg-120 mg; 4 mg-20 mg-10 mg/mL; 15 mg-150 mg-30 mg/5 mL; 15 mg-400 mg-60 mg; 30 mg-400 mg-30 mg; 15 mg-175 mg-30 mg/5 mL; 20 mg-380 mg-60 mg; 15 mg-400 mg-45 mg; 15 mg-175 mg-32 mg/5 mL; 10 mg-187 mg-30 mg/5 mL; 2.5 mg-50 mg-7.5 mg/mL; 30 mg-400 mg-60 mg; 20 mg-400 mg-40 mg; 20 mg-400 mg-30 mg; 20 mg-400 mg-20 mg; 30 mg-550 mg-60 mg; 40 mg-780 mg-80 mg; 30 mg-580 mg-60 mg; 30 mg-575 mg-60 mg; 30 mg-575 mg-25 mg; 10 mg-200 mg-15 mg/5 mL; 15 mg-200 mg-40 mg/5 mL; 60 mg-1200 mg-60 mg; 60 mg-1200 mg-120 mg; 30 mg-600 mg-50 mg; 40 mg-700 mg-80 mg; 15 mg-190 mg-30 mg; 30 mg-1000 mg-60 mg

Usual Adult Dose for:

Usual Pediatric Dose for:

Additional dosage information:

Usual Adult Dose for Cough and Nasal Congestion

Dose referred to by strength of dextromethorphan/guaiFENesin/pseudoephedrine (in mg) per unit of measurement:

Oral liquids (liquid/drops/solution/syrup):

10/187/30 per 5 mL: 10 mL every 4 hours, maximum 4 doses per day

15/200/30 per 5 mL: 5 to 10 mL every 6 hours, maximum 40 mL per day


Oral solids:

20/380/60 per tablet: 1 tablet every 4 hours, maximum 4 doses per day

30/400/30 per tablet: 1 tablet every 6 hours, maximum 4 doses per day

30/400/60 per tablet: 1 tablet every 6 hours, maximum 4 doses per day

Usual Pediatric Dose for Cough and Nasal Congestion

Dose referred to by strength of dextromethorphan/guaiFENesin/pseudoephedrine (in mg) per unit of measurement:

Oral liquids (liquid/drops/solution/syrup):

5/50/15 per 5 mL
6 to 12 years: 10 mL every 4 to 6 hours, maximum 4 doses per day
2 to under 6 years: 5 mL every 4 to 6 hours, maximum 4 doses per day

10/187/30 per 5 mL
2 to under 6 years: 2.5 mL every 4 hours, maximum 4 doses per day
6 to under 12 years: 5 mL every 4 hours, maximum 4 doses per day
12 years and older: 10 mL every 4 hours, maximum 4 doses per day

15/200/30 per 5 mL
12+= 10 mL every 6 hours, maximum 4 doses per day

15/200/30 per 5 mL
12 years and older: 5 to 10 mL every 6 hours, maximum 40 mL per day
6 to under 12 years: 2.5 to 5 mL every 6 hours, maximum 20 mL per day


Oral solids:

20/380/60 per tablet
12 years and older: 1 tablet every 4 hours, maximum 4 doses per day
6 to under 12 years: 1/2 tablet every 4 hours, maximum 4 doses per day

30/400/30 per tablet
12 years and older: 1 tablet every 6 hours, maximum 4 doses per day

30/400/60 per tablet
12 years and older: 1 tablet every 6 hours, maximum 4 doses per day
6 to under 12 years: 1/2 tablet every 6 hours, maximum 4 doses per day

Renal Dose Adjustments

Data not available

Liver Dose Adjustments

Data not available

Precautions

CONTRAINDICATIONS:
-Current use of a monoamine oxidase inhibitor (MAOI) or use within 14 days of stopping a MAOI.

Safety and efficacy have not been established in patients younger than 2 years.

Consult WARNINGS section for additional precautions.

Dialysis

Data not available

Further information

Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.