Medicine

Oseltamivir Phosphate

ओसेल्टामिविर फॉस्फेट

Medically reviewed by Dr Rishikanth Shukla · 2026-08-04

What it is

Oseltamivir Phosphate is a medicine used to treat flu caused by Influenza A and B viruses. It requires a prescription in India.

What it is used for

Oseltamivir Phosphate is used to treat flu caused by Influenza A and B viruses. It works by inhibiting the neuraminidase enzyme of the influenza virus, which helps to prevent the virus from spreading within the body.

Influenza A
Influenza B

How it works

Oseltamivir Phosphate works by inhibiting the neuraminidase enzyme of the influenza virus. This enzyme is crucial for the virus to spread within the body. By blocking this enzyme, Oseltamivir Phosphate helps to limit the spread of the virus, thereby reducing the severity and duration of flu symptoms.

How it is sold in India

In India Oseltamivir Phosphate comes as capsules, syrup, tablets and suspension.

Common side effects

Our sources do not cover this.

See a doctor straight away if

Seek medical attention immediately if you experience severe side effects such as hepatitis, Stevens-Johnson syndrome, or toxic epidermal necrolysis. Also, if you are a child experiencing neuropsychiatric disorders, stop using the medicine and consult a doctor. If your symptoms persist for more than 48 hours, stop using the medicine and consult a doctor.

Who should not take it

Our sources do not cover this.

Brand names

20 medicines sold in India contain Oseltamivir Phosphate.

Brands sold in India include Antiflu, Fluvia, Olsivir, Olpavir, Fluvir, Oselet, Oseltabest, Osiflu. Whichever name is on the strip, the medicine inside is the one described on this page.

Where this comes from

We do not publish doses. How much to take depends on your age, weight and other conditions — ask your doctor or pharmacist.

This page is general information, not medical advice, and it is not a substitute for seeing a doctor. It carries no dosage and no prices.