Oseltamivir Phosphate
Oseltamivir phosphate is an antiviral neuraminidase inhibitor used to treat acute, uncomplicated influenza in patients 2 weeks of age and older who have been symptomatic for no more than 48 hours. It is also used for the prophylaxis (prevention) of influenza in patients 1 year of age and older.
Dosage by Body Weight
For maximum efficacy, treatment should begin within 48 hours of influenza symptom onset. For treatment, it is typically administered twice daily for 5 days. For prophylaxis, it is administered once daily for at least 10 days.
- Body Weight
- Below 5 kg
- Dose
- 3 mg/kg
- Frequency
- Twice daily for 5 days
- Tracking Notes
- Only under strict medical supervision. Usually prescribed for infants under 1 year of age using the oral suspension.
- Body Weight
- 5-7 kg
- Dose
- 15 mg to 21 mg
- Frequency
- Twice daily for 5 days
- Tracking Notes
- Calculated weight-based dosing for infants (3 mg/kg per dose). Use a calibrated oral syringe.
- Body Weight
- 8-10 kg
- Dose
- 24 mg to 30 mg
- Frequency
- Twice daily for 5 days
- Tracking Notes
- For children 1 year and older under 15 kg, the standard dose is 30 mg.
- Body Weight
- 11-15 kg
- Dose
- 30 mg
- Frequency
- Twice daily for 5 days
- Tracking Notes
- Standard recommended pediatric dose for this weight range.
- Body Weight
- 16-20 kg
- Dose
- 45 mg
- Frequency
- Twice daily for 5 days
- Tracking Notes
- Standard recommended pediatric dose for children weighing between 15.1 kg and 23 kg.
| Body Weight | Dose | Frequency | Tracking Notes |
|---|---|---|---|
| Below 5 kg | 3 mg/kg | Twice daily for 5 days | Only under strict medical supervision. Usually prescribed for infants under 1 year of age using the oral suspension. |
| 5-7 kg | 15 mg to 21 mg | Twice daily for 5 days | Calculated weight-based dosing for infants (3 mg/kg per dose). Use a calibrated oral syringe. |
| 8-10 kg | 24 mg to 30 mg | Twice daily for 5 days | For children 1 year and older under 15 kg, the standard dose is 30 mg. |
| 11-15 kg | 30 mg | Twice daily for 5 days | Standard recommended pediatric dose for this weight range. |
| 16-20 kg | 45 mg | Twice daily for 5 days | Standard recommended pediatric dose for children weighing between 15.1 kg and 23 kg. |
Formulation
Purpose
Treatment and prevention of Influenza A and Influenza B virus infections
Generic Name
Oseltamivir PhosphateBranded Drug Names
Oseltamivir Phosphate is listed as a generic drug name. Common branded medicines that may contain the same active ingredient include:
Scheduled Drug
Yes. This medicine should be supplied or used only according to applicable prescription and regulatory requirements.