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Pediatric - Dextromethorphan Dosage Table

Dextromethorphan dosage table

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Dextromethorphan Dosage Table
Child's weight more than (pounds)163248648096130lbs
Total amount (mg)2.557.51012.51520mg
Liquid 5 mg/5 ml (tsp)½123--tsp
Liquid 7.5 mg/5 ml (tsp)----1123tsp
Liquid 10 mg/5 ml (tsp)------112tsp

Indication: Cough suppressant. Dextromethorphan (DM) is present in most cough syrups.

Table Notes:

  • AGE LIMIT: Don’t use under 4 years of age. Over 4 years of age: NOT recommended as primary treatment of cough. Use honey instead. Avoid multi-ingredient products in children under 6 years of age. (Reason: FDA recommendations 10/2008).
  • DOSAGE: Determine by finding child's weight in the top row of the dosage table.
  • ADULT DOSE: 20 mg
  • FREQUENCY: Repeat every 6-8 hours as needed

Author and Senior Reviewer: Barton D. Schmitt, M.D.

Content Set: Pediatric HouseCalls Online

Pediatric HouseCalls Online

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