Dextromethorphan / Phenylephrine Dosage
Medically reviewed by Drugs.com. Last updated on Aug 2, 2023.
Applies to the following strengths: 2.5 mg-1.25 mg/0.8 mL; 5 mg-2.5 mg/5 mL; 5 mg-2.5 mg; 30 mg-5 mg/10 mL
Usual Pediatric Dose for:
Additional dosage information:
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.
More about dextromethorphan / phenylephrine
- Check interactions
- Compare alternatives
- Side effects
- During pregnancy
- Drug class: upper respiratory combinations
Patient resources
Other brands
Children's Triacting Daytime, PediaCare Children's Multi-Symptom Cold, Safetussin CD
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Further information
Always consult your healthcare provider to ensure the information displayed on this page applies to your personal circumstances.