MedDataToolOseltamivir
Generic: Oseltamivir Phosphate
Influenza antiviral✓ FDA-verified
View full FDA label ↗Oseltamivir is a medication used to treat and prevent influenza, commonly known as the flu, in patients aged 2 weeks and older. It works by stopping the flu virus from spreading in the body, helping to reduce the severity and duration of symptoms. The medication is taken as an oral suspension, with adults and adolescents typically starting at 75 mg twice a day for 5 days for treatment, or 75 mg once daily for at least 10 days for prevention. It is important to note that oseltamivir is not recommended for patients with severe kidney problems who are not on dialysis. Additionally, if you are taking probenecid, a medication that affects kidney function, it may increase the levels of oseltamivir in your body, but no dose adjustment is needed.
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Uses
- Treatment of uncomplicated influenza A and B.
- Prophylaxis of influenza A and B.
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Dosage
Adults and adolescents (13 years and older): 75 mg twice daily for 5 days for treatment.
Pediatric patients (1 to 12 years): Based on weight, twice daily for 5 days for treatment.
Pediatric patients (2 weeks to less than 1 year): 3 mg/kg twice daily for 5 days for treatment.
Adults and adolescents (13 years and older): 75 mg once daily for at least 10 days for prophylaxis.
Always follow your doctor's specific instructions for your dose.
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Side effects
Common
NauseavomitingheadacheSkin reactions
Serious
allergic reactionsneuropsychiatric events
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Warnings
⚠ Important warnings
- Not a substitute for annual flu vaccination.
- Not recommended for patients with end-stage renal disease not undergoing dialysis.
- Consider drug resistance patterns before use.
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Drug interactions
- Live attenuated influenza vaccineavoid use within 2 weeks before or 48 hours after oseltamivirAvoid
- Inactivated influenza vaccinecan be given at any time with oseltamivirCaution
- Amoxicillinno dose adjustments neededCaution
- Acetaminophenno dose adjustments neededCaution
- Aspirinno dose adjustments needed.Caution
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Answers pulled from the FDA label only.
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Medical Disclaimer: This content is provided for informational and educational purposes only and is not intended as medical advice. Always consult a qualified healthcare provider before taking any medication.
Data Source: Publicly available drug labeling information from the U.S. Food and Drug Administration (FDA).
Data Source: Publicly available drug labeling information from the U.S. Food and Drug Administration (FDA).