Oseltamivir Phosphate (Generic Tamiflu) - Uses, Dosage and Side Effects

Oseltamivir Phosphate is an antiviral drug that slows the spread of influenza (flu) virus between cells in the body by stopping the virus from chemically cutting ties with its host cell. The medicine is sold under the brand name Tamiflu and Antiflu (Generic form) and is taken orally in capsules or as a suspension.
It has been used to treat and prevent influenza A virus , influenza B virus infection and   Swine Influenza Virus in over 50 million people. Oseltamivir is approved for use in persons age one and over. There is also currently an FDA Emergency Use authorization temporarily allowing the use of Tamiflu in children less than one year old.

Side Effects of Oseltamivir Phosphate (Generic Tamiflu)

Common side effects associated with oseltamivir therapy include: nausea, vomiting, diarrhea, abdominal pain, and headache. Rare side effects include hepatitis and elevated liver enzymes, rash, allergic reactions including anaphylaxis, and Stevens-Johnson syndrome.
Various other undesirable effects of Generic Tamiflu have been reported in postmarketing surveillance which include toxic epidermal necrolysis, cardiac arrhythmia, seizure, confusion, aggravation of diabetes, and haemorrhagic colitis.

Oseltamivir Phosphate (Generic Tamiflu) - Dosage

The usual adult dosage for treatment of influenza is 75 mg twice daily for five days, beginning within two days of the appearance of symptoms, with decreased doses for children and patients with renal impairment.
It may be given as a preventive measure either during a community outbreak or following close contact with an infected individual. Standard prophylactic dosage is 75 mg once daily for patients aged 13 and older, which has been shown to be safe and effective for up to six weeks. The importance of early treatment is that the NA protein inhibition is more effective within the first 48 hours.

Oseltamivir Phosphate - Availability And Packaging

Oseltamivir Phosphate is available as Generic Tamiflu which is packaged in 75 mg capsules containing oseltamivir phosphate 98.5 mg equivalent to oseltamivir 75 mg.

Additional Information

Prescribing Information



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