Oseltamivir Dosing for 11.11 kg Child
For a child weighing 11.11 kg, administer 30 mg of oseltamivir (5 mL of the 6 mg/mL oral suspension) twice daily for treatment or once daily for prophylaxis. 1
Weight-Based Dosing Algorithm
The child weighing 11.11 kg falls into the ≤15 kg weight category according to current AAP guidelines 2, 1:
- Treatment dose: 30 mg (5 mL) twice daily for 5 days
- Prophylaxis dose: 30 mg (5 mL) once daily for 7-10 days (post-exposure) or up to 6 weeks (community outbreak)
This is confirmed by FDA labeling, which specifies that children ≤15 kg receive 30 mg twice daily for treatment 3.
Key Dosing Considerations
Suspension Concentration
The oseltamivir oral suspension has a final concentration of 6 mg/mL after reconstitution 3. Therefore:
- 30 mg dose = 5 mL of suspension
- Use an appropriate oral syringe for accurate measurement
Timing and Administration
- Initiate treatment within 48 hours of symptom onset for maximum benefit 1, 4
- May be given with or without food, though administration with meals may improve GI tolerability 1, 3
- Treatment duration is 5 days for uncomplicated influenza 1
Important Clinical Pitfalls
Age-Specific Dosing Differences
Do not confuse this with infant dosing. Children ≥12 months use weight-based fixed doses (30,45,60, or 75 mg), while infants <12 months require mg/kg dosing (3-3.5 mg/kg/dose) 2, 1. At 11.11 kg, this child is almost certainly ≥12 months old and should receive the fixed 30 mg dose, not a calculated mg/kg dose.
Renal Function
The standard dosing above assumes normal renal function. Dose adjustment is required for renal impairment, though specific pediatric renal dosing is not well-established in package labeling 1, 3.
Supply Considerations
Dispense 1 bottle of oral suspension for a 5-day treatment course at this dose 3.