Buy Tamiflu tablets from a trusted UK pharmacy

  • Treats symptoms fast
  • Can be used preventatively, stopping you from catching flu even after being in contact with an infected person
  • Available from £29.99 + prescription fees and delivery costs

Our prices

Strength Quantity Price Stock
75mg10 capsules£29.99Out of Stock
75mg20 capsules£49.99Out of Stock
75mg30 capsules£89.99Out of Stock
75mg40 capsules£114.99Out of Stock
Prices exclude a prescription fee. This treatment requires a quick online consultation,
which a doctor will review to determine if a prescription is appropriate.

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Virginia Chachati

Reviewed by Virginia Chachati MPharm
(2013, University College London)
GPhC Registration number: 2087654

Information last reviewed 08/04/21


What is Tamiflu?

Tamiflu (oseltamivir) is a medicine used to treat the symptoms of influenza, commonly known as “the flu”. You can also take it to prevent flu during an outbreak, or if you have been in contact with someone who has the flu.

How does Tamiflu work?

Tamiflu contains the active ingredient oseltamivir, an antiviral medicine which works by stopping the spread of the flu virus in your body. It helps alleviate symptoms such as a congested or runny nose, feeling tired, sore throat, cough, muscle or joint ache, headache, fever and chills. Tamiflu helps speed up recovery time by one to two days.

How long does Tamiflu take to work?

If you take Tamiflu within 48 hours of noticing flu-like symptoms, you should start to feel better within two days.

How effective is Tamiflu?

Tamiflu is recognised by the World Health Organisation (WHO) as an effective treatment and preventative for influenza.

How long will you be contagious for after taking Tamiflu?

Influenza is most contagious during the first five days. While Tamiflu can reduce symptoms and speed up recovery time, you may still be contagious so it is important to take precautions such as sneezing into tissues, disinfecting surfaces and washing your hands frequently.

Tamiflu summary


Treating flu - two doses daily for 5 days

Preventing flu - one dose daily for 10 days

Type of Medicine

Flu antiviral


Competitive inhibitor which prevents release of viral particles from cells

Available Size

10, 20 or 30 capsules

Available Strengths


Active Ingredient



From £2.50 per capsule

Side Effects

Can include nausea, vomiting, headache, dizziness, sore throat, fever, pain, upset stomach, convulsions, allergic reactions, skin reactions


Active ingredients

The active ingredient in Tamiflu is oseltamivir.

Inactive ingredients

The inactive ingredients in Tamiflu are pregelatinised starch, talc, povidone, croscarmellose sodium, sodium fumarate, gelatin, yellow iron oxide (E172), red iron oxide (E172), black iron oxide (E172), titanium dioxide (E171), shellac (E904), FD and C Blue 2 (indigo carmine E132).


Do I need to take a full course of Tamiflu?

It is important to finish your prescribed course of Tamiflu even if you are feeling better. For treating the flu, you will be prescribed a five day course of Tamiflu. For preventative use, your Tamiflu course will usually last ten days.

How to take Tamiflu

Always take Tamiflu as instructed by a doctor or pharmacist. For treating flu, take Tamiflu twice daily for five days. For preventing flu, take Tamiflu once daily for ten days. Swallow the capsule whole with water. Tamiflu can be taken with or without food, although it can make you feel nauseous if you take it on an empty stomach. If you miss a dose, take it as soon as you remember, or just skip the dose if it is nearly time for your next one. Never take a double dose to make up for a missed one.

If you struggle to swallow capsules, a liquid version called Tamiflu oral suspension is available. Alternatively, you can open one 75 mg Tamiflu capsule and mix the contents with one teaspoon or less of a sweetened food product, such as a syrup or apple sauce, then consume the mixture immediately. See the packet instructions for further information.

Side Effects

Tamiflu side effects

Tamiflu can cause side effects in some patients. If you experience any of the following side effects, stop taking Tamiflu and contact a doctor immediately: 

  • Convulsions
  • Delirium
  • Altered level of consciousness
  • Confusion or abnormal behaviour
  • Hallucinations
  • Delusions
  • Agitation
  • Anxiety 
  • Nightmares

Common side effects, affecting around 1 in 10 people, include:

  • Headaches
  • Nausea
  • Bronchitis
  • Cold Sores
  • Cough
  • Dizziness
  • Fever
  • Pain
  • Pain in limbs
  • Runny nose
  • Sleeping difficulties
  • Sore throat
  • Stomach ache
  • Tiredness
  • Upper abdominal fullness
  • Upper respiratory tract infections (inflammation of the nose, throat and sinuses)
  • Upset stomach
  • Vomiting

Uncommon side effects (affecting up to 1 in 100 people) include:

  • Allergic reactions
  • Altered level of consciousness
  • Convulsions
  • Heart rhythm abnormalities
  • Mild to severe liver function disorders
  • Skin reactions (inflammation, red and itchy rash, scaling skin)

The following rare side effects can affect up to 1 in 1000 people:

  • Thrombocytopenia
  • Visual disturbances


You should NOT take Tamiflu if you are allergic to oseltamivir or any of the other ingredients listed. Before taking Tamiflu, tell your doctor if:

  • You are allergic to any other medicines
  • You have problems with your kidneys
  • You have a severe medical condition
  • You have problems with your immune system
  • You have chronic heart disease 
  • You have chronic respiratory disease

Drug interactions

Before starting Tamiflu, tell your doctor or pharmacist if you are taking any other medicines, including those purchased over the counter without a prescription. Tell your doctor or pharmacist if you are taking any of the following:

  • Chlorpropamide (for diabetes)
  • Methotrexate (for rheumatoid arthritis)
  • Phenylbutazone (for pain and inflammation)
  • Probenecid (for gout)

Tamiflu and pregnancy

Before taking Tamiflu, tell your doctor or pharmacist if you are pregnant or planning a pregnancy. Your doctor will be able to decide if Tamiflu is right for you.

Tamiflu and alcohol

Drinking alcohol will not interfere with Tamiflu. However, if you have the flu you are more likely to recover quickly if you avoid drinking excessively.

Tamiflu and driving

Tamiflu has no effect on your ability to drive or operate heavy machinery.

Treatment Options

Tamiflu vs the flu jab

If you can, you should get vaccinated against influenza once a year. Tamiflu is not the same as the flu vaccine. Even if you have been vaccinated, Tamiflu can be taken to treat symptoms of flu, or as a preventative if you have recently come into contact with someone who has the virus. Tamiflu will not change the effectiveness of the flu vaccine. You can find out if you are eligible for a free flu vaccine on the NHS website.


Is Tamiflu preventative?

Tamiflu can be used as a preventative during an influenza outbreak or if you have recently come into contact with someone who has the virus. When used for preventative purposes, Tamiflu is usually taken once daily for at least ten days.

Is Tamiflu an antibiotic?

Tamiflu is not an antibiotic and will not work against bacterial infections. It is an antiviral medicine used for the treatment and prevention of influenza.

Is Tamiflu a steroid?

Tamiflu is not a steroid, it is an antiviral medicine.

Does Tamiflu help other throat or sinus infections?

Tamiflu is an antiviral medicine used to treat the viral infection influenza. It cannot be used to treat non-viral or bacterial infections.

Can children take Tamiflu?

Tamiflu can be used at a lower dose to treat flu in children. Tamiflu can only be purchased from Dr Felix for use in adults over the age of 18 years old.

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Very easy to navigate the site. Easy ordering process and quick delivery, once approved, for the medication. Will definitely use again.

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