Formulas for calculating dose of drug

Formulas for calculating dose of drug

• PATIENT DOSE BY AGE

1. Young formula (for upto 12 yrs old patient)

Child age in years 

⏤⏤⏤⏤⏤⏤⏤⏤⏤⏤ × Adult dose = patient dose

Child age in years +12

2. Dilling's formula (for upto 20 yrs old patient)

Patient age in years
⏤⏤⏤⏤⏤⏤⏤⏤⏤ × Adult dose = patient dose
                20


3. Cowling's  formula

Age in years + 1
⏤⏤⏤⏤⏤⏤⏤⏤ × Adult dose = Patient dose

             24      

       
4. Fried's formula (for infants) 

Age in months
⏤⏤⏤⏤⏤⏤⏤× Adult dose = Infant dose
          150


5. Bastedo's formula 

Age in years + 3
⏤⏤⏤⏤⏤⏤⏤⏤ × Adult dose = Patient dose
             30

6. Gaubin's formula 

• Child dose by weight 

1. Clark's formula

Child weight (lb)

⏤⏤⏤⏤⏤⏤⏤⏤ × Adult dose = Child dose 

            150