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Oseltamivir is available as a 30 mg, 45 mg, and 75 mg oral capsule and a 6 mg/ml oral suspension.

Oseltamivir is an antiviral that is used to treat:

• Flu treatment (flu types A and B) in people 2 weeks of age and older
• Flu prevention (flu types A and B) in people 1 year of age and older

Oseltamivir is an antiviral medication. More specifically, it’s a neuraminidase inhibitor (NAI). Neuraminidase is a protein that’s found on the surface of the influenza (flu) virus. It plays a role in helping the virus spread inside someone who’s infected. By blocking this protein, Oseltamivir prevents the flu virus from releasing copies of itself throughout your body and making you feel sicker.

For flu treatment Adults and children 13 years of age and older: The typical dose is 75 mg by mouth twice daily for 5 days. Children ages 1 to 12 years old: The dose is based on your child’s body weight. The typical dose ranges from 30 mg to 75 mg by mouth twice daily for 5 days. Children ages 2 weeks to 1 year old: The dose is based on your child’s body weight. The typical dose is 3 mg/kg of body weight by mouth twice daily for 5 days. Your child’s provider will calculate the dose for you. For flu prevention Adults and children 13 years of age and older: The typical dose is 75 mg by mouth once daily for at least 10 days but not longer than 6 weeks.
Children ages 1 year to 12 years old: The dose is based on your child’s body weight. The typical dose ranges from 30 mg to 75 mg by mouth once daily for at least 10 days but not longer than 6 weeks. Your dose might differ if you have kidney problems (you might need to take the medication less often).

Oseltamivir is a safe and effective treatment when used for FDA licensed indications. However, like all medications, they may give you unwanted side effects. You should always discuss potential side effects with your physician to ensure the medication is suitable and right for you.

Common side effects of Oseltamivir:

• Nausea
• Vomiting
• Headache

Serious side effects are rare with Oseltamivir. Serious Side Effects
Contact your healthcare provider immediately if you experience any of the following.

• Allergic reaction: trouble breathing; swelling of your face, eyes, lips, tongue, or throat
• Serious skin reactions (Stevens-Johnson syndrome): skin rash, hives, blistering or peeling skin

The following medications may interact with Oseltamivir:

• Live attenuated influenza vaccine, intranasal:
• Do not administer until 48 hours following cessation of Oseltamivir
• Do not administer Oseltamivir until 2 weeks following administration of
• the live attenuated influenza vaccine, unless medically indicated

Various FDA-approved generic manufacturers

There are no adequate and well-controlled studies of Oseltamivir in pregnant women. It is unknown whether Oseltamivir can cause fetal harm when administered to a pregnant woman. Oseltamivir should be used during pregnancy only if the potential benefit justifies the potential risk to the fetus.

• Tamiflu