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Tamiflu is an anti-viral medication used to treat or prevent the flu (influenza virus).

What is Tamiflu and what is it used for?

Tamiflu is a medication used to treat and even prevent flu (influenza) in adults, adolescents, children, and infants. Tamiflu contains the active ingredient oseltamivir, which belongs to a group of medicines called neuraminidase inhibitors. They prevent the flu virus from spreading in the body while easing or preventing the symptoms of a flu virus infection.

How does it work?

The active ingredient oseltamivir inhibits the formation of an enzyme neuraminidase, which the flu virus needs to spread in the airways. Therefore, it reduces the influenza virus growth and helps your body’s immune system fight off the infection.

How should I take Tamiflu?

The recommended dose of Tamiflu depends on your body weight. Those with a weight of 40kg and above should take a dose of 75mg twice a day to treat flu. It is very important to complete the 5-day course to kill off the virus, even if you feel better before then.

For preventing flu, take one dose whole daily for 10 days with your breakfast.

What are the side effects of Tamiflu?

Like all medications, Tamiflu can have some side effects. About one in ten people using Tamiflu can experience:

  • nausea
  • headache
  • runny nose
  • fever

 Information Leaflet

Always read the patient information leaflet before commencing treatment.

Important: We advise you to always read the patient information leaflet inside the medication box, as the generic medication may not always entirely match the patient information leaflet listed. Please contact us if you have any questions.

Written and reviewed by our qualified team

GPhC Number: 2088658

Carolina Goncalves

Authored by:

Carolina Goncalves


GPhC Number: 2225869

Rehma Gill

Reviewed by:

Rehma Gill


Find out more about how we ensure the accuracy of our content with our content guidelines.

Content last updated: 22 Dec 2022

Tamiflu Reviews

9.6/ 10
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Feefo logo

Based on 47 independent customer reviews taken by Feefo (see all Feefo Reviews), Google and Trustpilot (see all Trustpilot Reviews).

left on Trustpilot

Product Review:

"helps reduce symptoms of flu, easy to swallow"

(read on Feefo)
"Easy to order"

Product Review:

"Seems to work for me as an antiviral"

Service Review:

"Excellent service, easy to do, prompt delivery"

"Super Products & Service"

Product Review:

"I visit schools with educational inflatable planetarium experiences. Tamiflu helps me ward off the cold and flu germs I am constantly exposed to in winter."

Service Review:

"Pharmica not only supply super flu antivirals that help me ward off winter colds, but their shipping is always very prompt."

"There are it’s the best !"

Product Review:

"Thank you very much!"

Service Review:

"There are it’s the best !"

(read on Feefo)
"Fast, efficient service. Highly recommend."

Product Review:

"Good anti-viral to use when travelling."

Service Review:

"Good response, efficient delivery. Very easy page to navigate."

"Excellent Service"

Product Review:

"I have used Tamiflu many times and it is really effective. I like to keep a packet at home in case I get flu."

Service Review:

"The service is really excellent. The web-site is easy to navigate, the response and invoicing really quick and the delivery exceeding fast. I have to say that the Pharmica service on the Internet - of any type - that I use."

"I enjoyed the products"

Product Review:

"satisfied "

Service Review:

"I enjoyed the products, and good simple Online service was very good! the only reason I did not give 5 stars is the delivery time, the next day delivery, which I have paid extra, lasted in fact 5 days."

"Quality and Savings"

Product Review:

"This stuff is amazing for preventing the flu!"

Service Review:

"I've been buying flu antivirals from Pharmica the past three winters now, and not only do they prevent me from becoming ill during my busiest time of the year; but from Pharmica they are also the least expensive online."

"Speedy delivery"

Product Review:

"Good product "

Service Review:

"Speedy delivery, vast range of products"

(read on Feefo)
"The best"

Product Review:

"Very efficient ! Good value for money"

Service Review:

"Excellent service, prompt and discreet"

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