PO Calc: Liquid Wt. Based Med Dose
Info
Weight
unit kgs lbs
Dose (mg/kg/day)
unit 6x/d 5x/d QID TID BID QD
Liq.Conc. (mg/5mL)
R e s u l t s
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Output
 
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Info
PO Calc: Liquid Wt. Based Med Dose

This calculator is useful for calculating the dose of oral liquids to be administered based on the patient's weight.

Formula:

Weight based liquid med. dose (mL) = (DO × SV × Wt. (kg))/ LC

Where,

  • DO = Dose ordered in mg/kg/day
  • SV = Standard volume which is 5 mL in this case
  • LC = Liq. Conc. in mg/5mL

For

  • QD dosing, divide by 1
  • BID dosing, divide by 2
  • TID dosing, divide by 3
  • QID dosing, divide by 4
  • 5×/day dosing, divide by 5
  • 6×/day dosing, divide by 6

Reference:

Oral Dosage of Drugs. In: Pickar GD. Dosage Calculations. 9th ed. Clifton Park, NY: Delmar; 2007:207-254.