Dextromethorphan / Diphenhydramine / Phenylephrine Dosage
Medically reviewed by Drugs.com. Last updated on Aug 7, 2023.
Applies to the following strengths: varying strength; 75 mg-25 mg-7.5 mg/5 mL; 15 mg-12.5 mg-15 mg/5 mL
Usual Adult Dose for:
Usual Pediatric Dose for:
Additional dosage information:
Usual Adult Dose for Allergic Rhinitis
Dextromethorphan/diphenhydrAMINE/PE 15 mg-12.5 mg-15 mg/5 mL oral suspension, extended release: 5 to 10 mL orally every 12 hours.
Dextromethorphan/diphenhydrAMINE/PE 75 mg-25 mg-7.5 mg/5 mL oral suspension, extended release: 5 to 10 mL orally every 12 hours.
Usual Adult Dose for Cold Symptoms
Dextromethorphan/diphenhydrAMINE/PE 15 mg-12.5 mg-15 mg/5 mL oral suspension, extended release: 5 to 10 mL orally every 12 hours.
Dextromethorphan/diphenhydrAMINE/PE 75 mg-25 mg-7.5 mg/5 mL oral suspension, extended release: 5 to 10 mL orally every 12 hours.
Usual Adult Dose for Cough and Nasal Congestion
Dextromethorphan/diphenhydrAMINE/PE 15 mg-12.5 mg-15 mg/5 mL oral suspension, extended release: 5 to 10 mL orally every 12 hours.
Dextromethorphan/diphenhydrAMINE/PE 75 mg-25 mg-7.5 mg/5 mL oral suspension, extended release: 5 to 10 mL orally every 12 hours.
Usual Adult Dose for Sinusitis
Dextromethorphan/diphenhydrAMINE/PE 15 mg-12.5 mg-15 mg/5 mL oral suspension, extended release: 5 to 10 mL orally every 12 hours.
Dextromethorphan/diphenhydrAMINE/PE 75 mg-25 mg-7.5 mg/5 mL oral suspension, extended release: 5 to 10 mL orally every 12 hours.
Usual Pediatric Dose for Allergic Rhinitis
Dextromethorphan/diphenhydrAMINE/PE 15 mg-12.5 mg-15 mg/5 mL oral suspension, extended release:
2 to 5 years: 2.5 mL orally every 12 hours.
6 to 11 years: 5 mL orally every 12 hours.
12 years or older: 5 to 10 mL orally every 12 hours.
Dextromethorphan/diphenhydrAMINE/PE 75 mg-25 mg-7.5 mg/5 mL oral suspension, extended release
2 to 5 years: 1.25 to 2.5 mL orally every 12 hours.
6 to 11 years: 2.5 to 5 mL orally every 12 hours.
12 years or older: 5 to 10 mL orally every 12 hours.
Usual Pediatric Dose for Cold Symptoms
Dextromethorphan/diphenhydrAMINE/PE 15 mg-12.5 mg-15 mg/5 mL oral suspension, extended release:
2 to 5 years: 2.5 mL orally every 12 hours.
6 to 11 years: 5 mL orally every 12 hours.
12 years or older: 5 to 10 mL orally every 12 hours.
Dextromethorphan/diphenhydrAMINE/PE 75 mg-25 mg-7.5 mg/5 mL oral suspension, extended release
2 to 5 years: 1.25 to 2.5 mL orally every 12 hours.
6 to 11 years: 2.5 to 5 mL orally every 12 hours.
12 years or older: 5 to 10 mL orally every 12 hours.
Usual Pediatric Dose for Cough and Nasal Congestion
Dextromethorphan/diphenhydrAMINE/PE 15 mg-12.5 mg-15 mg/5 mL oral suspension, extended release:
2 to 5 years: 2.5 mL orally every 12 hours.
6 to 11 years: 5 mL orally every 12 hours.
12 years or older: 5 to 10 mL orally every 12 hours.
Dextromethorphan/diphenhydrAMINE/PE 75 mg-25 mg-7.5 mg/5 mL oral suspension, extended release
2 to 5 years: 1.25 to 2.5 mL orally every 12 hours.
6 to 11 years: 2.5 to 5 mL orally every 12 hours.
12 years or older: 5 to 10 mL orally every 12 hours.
Usual Pediatric Dose for Sinusitis
Dextromethorphan/diphenhydrAMINE/PE 15 mg-12.5 mg-15 mg/5 mL oral suspension, extended release:
2 to 5 years: 2.5 mL orally every 12 hours.
6 to 11 years: 5 mL orally every 12 hours.
12 years or older: 5 to 10 mL orally every 12 hours.
Dextromethorphan/diphenhydrAMINE/PE 75 mg-25 mg-7.5 mg/5 mL oral suspension, extended release
2 to 5 years: 1.25 to 2.5 mL orally every 12 hours.
6 to 11 years: 2.5 to 5 mL orally every 12 hours.
12 years or older: 5 to 10 mL orally every 12 hours.
Renal Dose Adjustments
Data not available
Liver Dose Adjustments
Data not available
Dialysis
Data not available
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