Guaifenesin / Phenylephrine Dosage

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Usual Adult Dose for:

Usual Pediatric Dose for:

Additional dosage information:

Usual Adult Dose for Cough and Nasal Congestion

Tablets:
Guaifenesin 550 mg- phenylephrine 8.5 mg: 1 tablet orally every 6 to 8 hours, not to exceed 4 tablets a day.
Guaifenesin 380 mg- phenylephrine 10 mg: 1 tablet orally every 4 hours, not to exceed 6 tablets a day.
Guaifenesin 388 mg- phenylephrine 10 mg: 1 tablet orally every 4 hours, not to exceed 6 tablets a day.
Guaifenesin 200 mg- phenylephrine 5 mg: 2 tablets orally every 4 hours, not to exceed 12 tablets a day.

Liquid:
Guaifenesin 75 mg- phenylephrine 7.5 mg/5 mL: 10 mL orally every 4 to 6 hours, up to 40 mL a day.
Guaifenesin 100 mg- phenylephrine 5 mg/5 mL or guaifenesin 200 mg- phenylephrine 7.5 mg/5 mL: 10 mL orally every 4 to 6 hours, up to 40 mL a day.
Guaifenesin 100 mg- phenylephrine 7.5 mg/5 mL: 5 to 10 mL orally every 4 to 6 hours, up to 40 mL a day.
Guaifenesin 200 mg- phenylephrine 5 mg/5 mL: 5 to 10 mL orally every 4 to 6 hours, up to 60 mL a day.
Guaifenesin 100 mg- phenylephrine 10 mg/5 mL: 5 mL orally every 4 to 6 hours, up to 40 mL a day.

Tablets, extended-release:
Guaifenesin 275 mg- phenylephrine 25 mg: 1 to 2 tablets orally every 12 hours, up to 4 tablets a day.
Guaifenesin 600 mg- phenylephrine 18 mg, or guaifenesin 300 mg- phenylephrine 20 mg, or guaifenesin 600 mg- phenylephrine 15 mg, or guaifenesin 315 mg- phenylephrine 20 mg: 2 tablets orally every 12 hours.
Guaifenesin 600 mg- phenylephrine 10 mg or guaifenesin 600 mg- phenylephrine 25 mg: 1 to 2 tablets orally every 12 hours.
Guaifenesin 600 mg- phenylephrine 20 mg: 1 to 2 tablets orally every 12 hours, up to 2 tablets a day.
Guaifenesin 600 mg- phenylephrine 30 mg, or guaifenesin 600 mg- phenylephrine 40 mg, or guaifenesin 650 mg- phenylephrine 40 mg: 1 tablet orally every 12 hours.
Guaifenesin 650 mg- phenylephrine 23.75 mg, or guaifenesin 650 mg- phenylephrine 25 mg: 1 tablet orally every 12 hours not to exceed 2 tablets a day.
Guaifenesin 800 mg- phenylephrine 20 mg: 1 tablet orally every 8 hours not to exceed 3 tablets a day.
Guaifenesin 800 mg- phenylephrine 30 mg, or guaifenesin 800 mg- phenylephrine 40 mg, or guaifenesin 835 mg- phenylephrine 25 mg, or guaifenesin 835 mg- phenylephrine 30 mg or guaifenesin 900 mg- phenylephrine 25 mg, or guaifenesin 900 mg- phenylephrine 30 mg, or guaifenesin 1000 mg- phenylephrine 30 mg, or guaifenesin 1000 mg- phenylephrine 40 mg, or guaifenesin 1050 mg- phenylephrine 30 mg, or guaifenesin 1200 mg- phenylephrine 25 mg, or guaifenesin 1100 mg- phenylephrine 30 mg, or guaifenesin 1200 mg- phenylephrine 20 mg, or guaifenesin 1200 mg- phenylephrine 30 mg, or guaifenesin 1200 mg- phenylephrine 35 mg: 1 tablet orally every 12 hours not to exceed 2 tablets a day.
Guaifenesin 600 mg- phenylephrine 12.5 mg: 1 to 2 tablets orally every 12 hours or 1 tablet every 8 hours not to exceed 4 tablets a day.

Capsule, extended-release:
Guaifenesin 200 mg- phenylephrine 7.5 mg, or guaifenesin 300 mg- phenylephrine 10 mg: 1 to 2 capsules orally every 12 hours.
Guaifenesin 375 mg- phenylephrine 20 mg: 1 to 2 capsules orally every 12 hours, up to 3 capsules a day.
Guaifenesin 400 mg- phenylephrine 15 mg: 1 capsule orally every 12 hours.

Usual Pediatric Dose for Cough and Nasal Congestion

guaifenesin-phenylephrine 20 mg- 1.5 mg/ mL:
2 years to 5 years: 1 mL orally every 4 to 6 hours as needed. Do not exceed 4 doses in 24 hours.
6 years to 12 years: 2 mL orally every 4 to 6 hours as needed. Do not exceed 4 doses in 24 hours.

guaifenesin 100 mg- phenylephrine 5 mg/5 mL or guaifenesin 200 mg- phenylephrine 7.5 mg/5 mL or guaifenesin 75 mg - phenylephrine 7.5 mg/5 mL:
2 years to 6 years: 2.5 mL orally every 4 to 6 hours, up to 4 doses/day.
6 years to 11 years: 5 mL orally every 4 to 6 hours, up to 4 doses/day.

guaifenesin 50 mg- phenylephrine 2.5 mg/5 mL or guaifenesin 100 mg- phenylephrine 2.5 mg/5 mL:
2 years to 5 years: 5 mL orally every 4 hours, up to 6 doses a day.
6 years to 11 years: 10 mL orally every 4 hours, up to 6 doses a day.

guaifenesin 200 mg- phenylephrine 5 mg/5 mL:
2 years to 5 years: 2.5 mL orally every 4 hours, up to 6 doses a day.
6 years to 11 years: 5 mL orally every 4 hours, up to 6 doses a day.

Guaifenesin 100 mg- phenylephrine 10 mg/5 mL:
2 years to 5 years: 1.25 mL orally every 4 to 6 hours, up to 8 doses a day.
6 years to 11 years: 2.5 mL orally every 4 to 6 hours, up to 8 doses a day.

6 years to 11 years:
Guaifenesin 550 mg- phenylephrine 8.5 mg: 1/2 tablet orally every 6 to 8 hours, not to exceed 2 tablets a day.

Tablets, extended-release:
Guaifenesin 600 mg- phenylephrine 10 mg or guaifenesin 600 mg- phenylephrine 25 mg: 1/2 to 1 tablet orally every 12 hours.
Guaifenesin 600 mg- phenylephrine 18 mg or guaifenesin 600 mg- phenylephrine 15 mg: 2 tablets orally every 12 hours.
Guaifenesin 650 mg- phenylephrine 40 mg: 1/2 tablet orally every 12 hours.
Guaifenesin 800 mg- phenylephrine 20 mg: 1/2 tablet orally every 8 hours not to exceed 1.5 tablets a day.
Guaifenesin 900 mg- phenylephrine 30 mg, or guaifenesin 650 mg- phenylephrine 23.75 mg: 1/2 tablet orally every 12 hours not to exceed 2 tablets a day.
Guaifenesin 800 mg- phenylephrine 40 mg, or guaifenesin 315 mg- phenylephrine 15 mg: 1 tablet orally every 12 hours not to exceed 2 tablets a day.
Guaifenesin 800 mg- phenylephrine 30 mg, or guaifenesin 650 mg- phenylephrine 25 mg, or guaifenesin 835 mg- phenylephrine 25 mg, or guaifenesin 835 mg- phenylephrine 30 mg, or guaifenesin 900 mg- phenylephrine 25 mg, or guaifenesin 1000 mg - phenylephrine 30 mg, or guaifenesin 1000 mg- phenylephrine 40 mg, or guaifenesin 1050 mg- phenylephrine 30 mg, or guaifenesin 1100 mg- phenylephrine 30 mg, guaifenesin 1200 mg- phenylephrine 20 mg, or guaifenesin 1200 mg- phenylephrine 30 mg: 1/2 tablet orally every 12 hours not to exceed 1 tablet a day.

12 yrs and older:
Guaifenesin 100 mg- phenylephrine 5 mg/5 mL: 10 mL orally every 4 to 6 hours, up to 4 doses a day.
Guaifenesin 550 mg- phenylephrine 8.5 mg: 1 tablet orally every 6 to 8 hours, not to exceed 4 tablets a day.
Guaifenesin 380 mg- phenylephrine 10 mg: 1 tablet orally every 4 hours, not to exceed 6 tablets a day.
Guaifenesin 200 mg- phenylephrine 5 mg: 2 tablets orally every 4 hours, not to exceed 12 tablets a day.
Guaifenesin 100 mg- phenylephrine 10 mg/5 mL: 5 mL orally every 4 to 6 hours, up to 8 doses a day.

Tablets, extended-release:
Guaifenesin 800 mg- phenylephrine 20 mg: 1 tablet every 8 hours not to exceed 3 tablets a day.
Guaifenesin 275 mg- phenylephrine 25 mg or guaifenesin 600 mg- phenylephrine 15 mg: 1 tablet orally every 12 hours.
Guaifenesin 600 mg- phenylephrine 10 mg or guaifenesin 600 mg- phenylephrine 25 mg: 1 to 2 tablets orally every 12 hours.
Guaifenesin 600 mg- phenylephrine 18 mg, or guaifenesin 315 mg- phenylephrine 20 mg: 2 tablets orally every 12 hours.
Guaifenesin 600 mg- phenylephrine 40 mg: 1 tablet orally every 12 hours.
Guaifenesin 650 mg- phenylephrine 23.75 mg, or guaifenesin 650 mg- phenylephrine 25 mg, or guaifenesin 800 mg- phenylephrine 30 mg, or guaifenesin 800 mg- phenylephrine 40 mg, or guaifenesin 835 mg- phenylephrine 25 mg, or guaifenesin 835 mg- phenylephrine 30 mg, or guaifenesin 900 mg- phenylephrine 25 mg, or guaifenesin 900 mg- phenylephrine 30 mg, or guaifenesin 1000 mg- phenylephrine 40 mg, or guaifenesin 1050 mg- phenylephrine 30 mg, or guaifenesin 1100 mg- phenylephrine 30 mg, or guaifenesin 1200 mg- phenylephrine 20 mg, or guaifenesin 1200 mg- phenylephrine 25 mg, or guaifenesin 1200 mg- phenylephrine 30 mg, or guaifenesin 1200 mg- phenylephrine 35 mg: 1 tablet orally every 12 hours not to exceed 2 tablets a day.
Guaifenesin 600 mg- phenylephrine 12.5 mg: 1 to 2 tablets orally every 12 hours or 1 tablet every 8 hours not to exceed 4 tablets a day.

Capsules, extended-release:
Guaifenesin 200 mg- phenylephrine 7.5 mg: 1 to 2 capsules orally every 12 hours.
Guaifenesin 300 mg- phenylephrine 10 mg or Guaifenesin 400 mg - phenylephrine 15 mg: 1 capsule orally every 12 hours.
Guaifenesin 375 mg- phenylephrine 20 mg: 1 to 2 capsules orally every 12 hours, up to 3 a day.

Guaifenesin 388 mg- phenylephrine 10 mg oral tablets:
12 years and over: 1 tablet orally every 4 hours, not to exceed 6 tablets a day.
6 years to 12 years: 1/2 tablet orally every 4 hours, not to exceed 3 tablets a day.

Renal Dose Adjustments

Data not available

Liver Dose Adjustments

Data not available

Dialysis

Data not available

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