This calculator determines the Terbutaline dose for treating asthma or bronchospasm, using a concentration of Terbutaline 1.5 mg / 5 mL (0.3 mg/mL), based on the patient’s weight or age:
Dose in mL and mg (based on Terbutaline):
<12 years: 0.05 mg/kg/dose PO TID PRN (weight-based dosing)
12-15 years: 2.5 mg PO TID PRN (age-based dosing)
>15 years and adults: 5 mg PO TID PRN; reduce to 2.5 mg PO TID PRN if side effects occur
Where:
Administer as prescribed for asthma or bronchospasm. ⚠️ Always consult a healthcare provider.
Enter the patient’s weight in kilograms or pounds, select the unit, and click "Calculate." The calculator provides the dose in mL and mg for patients based on age/weight groups: <12 years (weight-based), 12-15 years (age-based), and >15 years/adults (age-based), with adjustments for side effects in adults.
Example: Weight 10 kg:
<12 years (Weight based dosing): 1.7 mL (0.5 mg) PO TID PRN Calculations must be re-checked and should not be used alone...
Consult a healthcare provider before administering.
Terbutaline (Bricanyl) is used to treat asthma, bronchospasm, and other respiratory conditions by relaxing the muscles in the airways.
<12 years: 0.05 mg/kg/dose PO TID PRN. 12-15 years: 2.5 mg PO TID PRN. >15 years and adults: 5 mg PO TID PRN; reduce to 2.5 mg PO TID PRN if side effects occur.
Consult a doctor, as Terbutaline dosing for very low-weight infants may require special consideration and medical supervision.
Enter the weight in pounds, and the calculator will automatically convert it to kilograms for calculation (1 lb = 0.4536 kg approximately).
The maximum dose per administration for adults is 5 mg (16.7 mL) PO TID PRN, but it can be reduced to 2.5 mg (8.3 mL) PO TID PRN if side effects occur.