Informational only — Not medical advice. Always consult a licensed healthcare provider.

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Community data Updated 2 months ago
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Indications

Viral Infection

Treatment of Influenza: Tamiflu is used to treat uncomplicated, acute influenza in patients over 1 year of age who have had symptoms for no more than 2 days. Prophylaxis of Influenza: Tamiflu is also used to prevent influenza in adults and adolescents aged 13 years and older.

⚠️ Always consult a registered physician before taking any medicine.

Pharmacology

Oseltamivir is an ethyl ester prodrug that must undergo ester hydrolysis to convert into its active form, oseltamivir carboxylate. It is thought to work by inhibiting influenza virus neuraminidase, which may also alter the aggregation and release of virus particles.

Pregnancy & Breastfeeding

Pregnancy Category C: Human data are insufficient to assess the risk Oseltamivir Phosphate poses to a pregnant woman or her developing fetus.

Nursing Mothers: It is not known whether oseltamivir or its active form, oseltamivir carboxylate, passes into human breast milk. For this reason, Oseltamivir Phosphate should be used by nursing mothers only if the potential benefit to the mother outweighs the potential risk to the breastfed infant.

⚠️ Talk to your doctor before taking any medicine during pregnancy or while breastfeeding.

Dosage Reference

⚠️ Reference ranges from official sources only. Consult your doctor for personalized dosing.

Adults: Oseltamivir Phosphate can be taken with or without food, though taking it with food may improve tolerability for some patients. For treatment of influenza in adults and adolescents 13 years and older, the recommended oral dose is 75 mg twice daily for 5 days, and treatment should begin within 2 days of the onset of influenza symptoms. The safety and efficacy of Oseltamivir for prophylaxis of influenza in pediatric patients younger than 13 years of age have not been established. For prophylaxis of influenza in adults and adolescents 13 years and older following close contact with an infected individual, the recommended oral dose is 75 mg once daily for at least 7 days, with therapy beginning within 2 days of exposure. For prophylaxis during a community outbreak of influenza, the recommended dose is 75 mg once daily; safety and efficacy have been demonstrated for up to 6 weeks, and protection lasts for as long as dosing continues.

Side Effects & Interactions

Side Effects

No side-effect data recorded yet.

Key Interactions

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