Dextromethorphan / Phenylephrine Dosage

Medically reviewed by Drugs.com. Last updated on Aug 2, 2023.

Usual Pediatric Dose for Cough and Nasal Congestion

Dextromethorphan 5 mg/ phenylephrine 2.5 mg per 5 mL liquid:
6 to under 12 years: 10 mL every 4 hours
4 to under 6 years: 5 mL every 4 hours
Maximum dose: 6 doses per 24 hours

Renal Dose Adjustments

Data not available

Liver Dose Adjustments

Data not available

Precautions

• Current use of a monoamine oxidase inhibitor (MAOI) or use within 14 days of stopping a MAOI.
• Use in children under 4 years old

Safety and efficacy have not been established in patients younger than 4 years.

Consult WARNINGS section for additional precautions.

Dialysis

Data not available

Other Comments

Administration advice:

• Use only the provided dosing cups for measuring.

Patient advice:

• Take only as directed.
• Discontinue for nervousness, dizziness, or sleepiness.
• If symptoms last over 7 days or are accompanied by fever, seek medical attention.
• If cough lasts over 7 days or comes back, or is accompanied or followed by fever, headache that lasts, or rash, seek medical care promptly.

See also:

Further information

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

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