Oseltamivir (Tamiflu) Pediatric Dosage Calculator
Antiviral dosing for influenza treatment and prophylaxis in children.
Weight in kilograms
Age (minimum 14 days for treatment)
Treatment or prevention
⚠️ Warnings & Contraindications
- Most effective when started within 48 hours of symptom onset
- For severe or hospitalized patients, treatment may be beneficial even after 48 hours
- May cause nausea, vomiting, headache - give with food to reduce GI upset
- Neuropsychiatric events (delirium, hallucinations) rarely reported in children
- For infants <14 days: use only if potential benefit justifies risk
- Does not replace annual influenza vaccination
ℹ️ Clinical Notes
Oral suspension: 6 mg/mL (60 mL bottle = 360 mg). Capsules: 30 mg, 45 mg, 75 mg. For children who cannot swallow capsules, capsules may be opened and mixed with sweetened liquids. For prophylaxis, dosing is once daily at same dose.
References
- Tamiflu (oseltamivir) FDA prescribing information - FDA (2024)
- AAP Influenza Guidelines - AAP (2024)
Medical Disclaimer
This calculator is provided for educational and informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified health provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read or calculated using this tool.
The authors and publishers of this calculator make no representations or warranties of any kind, express or implied, about the completeness, accuracy, reliability, suitability, or availability of the information, products, services, or related graphics contained within this tool for any purpose.