Tamiflu (Oseltamivir)

Available as 75mg Capsules

Upon completion of a medical consultation with one of our health care professionals you can expect prices to start from £22.99
The treatment is inclusive of consultation, private prescription & medicine delivery
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Faye Bonnell - Medical Content Writer
Faye Bonnell
Medical Content Writer
James O'Loan - CEO & Superintendent Pharmacist
James O'Loan
CEO & Superintendent Pharmacist

Buy Tamiflu

Tamiflu is an antiviral treatment for influenza (flu), containing the active ingredient oseltamivir, suitable for use when you have flu symptoms and the flu virus is known to be spreading in your community. Tamiflu can sometimes be prescribed to prevent flu in certain circumstances, for example, if you have been in contact with someone who has flu.

How Tamiflu treats flu

The active ingredient in Tamiflu is oseltamivir, a type of medicine classed as a neuraminidase inhibitor. It works by attacking the flu virus, stopping it from multiplying and spreading through your body. This means flu symptoms such as runny nose, cough, headache and fever can be prevented or reduced.



You should try to take Tamiflu as soon as possible, ideally within two days of flu symptoms starting. To treat flu, you should usually take two doses daily, one in the morning and one in the evening. You must complete a full 5-day course, even if you start to feel better quickly. If you have a weak immune system, you may need a 10 day course. To prevent flu after being exposed to an infected person, take one dose daily for 10 days - for best results, take this in the morning with breakfast.

The recommended dose will be based on your bodyweight - your doctor or Chemist4U pharmacist will advise you further. For guidance on dosage, refer to the patient information leaflet.


Side Effects

Like all medicines, Tamiflu can cause some side effects. Seek immediate medical attention if you notice any symptoms of the following serious side effects: 


  • Severe allergic reaction: swelling of the face, itchy rash, difficulty breathing or low blood pressure
  • Hepatic disorders: yellowing of the skin and whites of the eyes, change in stool colour, changes in behaviour
  • Angioneurotic oedema: sudden onset of severe swelling of the skin, mainly around the head and neck area, including eyes and tongue, with difficulty breathing
  • Stevens-Johnson syndrome and toxic epidermal necrolysis: severe inflammation of the outer and possibly inner skin initially with fever, sore throat, fatigue, skin rashes leading to blisters, peeling, shedding of larger areas of skin and possible breathing difficulties 
  • Gastrointestinal bleeding: prolonged bleeding from the large bowel or spitting up blood
  • Neuropsychiatric disorders: convulsions and delirium, altered level of consciousness, confusion, abnormal behaviour, delusions, hallucinations, agitation, anxiety and nightmares


Common, less severe side effects may include: 


  • Headache
  • Bronchitis
  • Cold sore virus
  • Cough
  • Dizziness 
  • Fever
  • Pain
  • Runny nose
  • Sleeping difficulties
  • Sore throat
  • Stomach ache
  • Tiredness
  • Upper abdominal fullness
  • Upper respiratory tract infections (inflammation of the nose, throat and sinuses)
  • Feeling or being sick

For more information on possible uncommon, rare or very rare side effects, refer to the patient information leaflet. If you experience any side effects, including any not included in the patient information leaflet, you can report them using the MHRA Yellow Card Scheme.



You must not take Tamiflu if you are allergic to oseltamivir or any of the other ingredients. Speak to a doctor or Chemist4U pharmacist before taking this medicine if: 

  • You are allergic to any other medicines
  • You have problems with your kidneys
  • You have any severe medical condition which may require immediate hospitalisation
  • Your immune system is not working
  • You have chronic heart disease or respiratory disease
  • You are taking any other medicines or herbal remedies, including those obtained without a prescription - particularly: chlorpropamide, methotrexate, phenylbutazone and probenecid 

Pregnancy and Breastfeeding

If you are pregnant, think you may be pregnant, trying for a baby or you are breastfeeding, you should speak to your doctor or a Chemist4U pharmacist before taking Tamiflu to make sure it’s right for you and your baby.



Keep in the original packaging in a cool, dry area below 25°C. Do not use this medicine after the expiry date printed on the packaging, referring to the last day of the stated month. Keep out of sight and reach of children.

Important information

This product is a medicine; make sure to speak to your doctor or Chemist4U pharmacist before taking this product if you have an underlying medical problem or are taking any other medicine or complementary therapy. If your symptoms get worse or continue after taking this product, contact us or your doctor. For medical services in your area, please refer to https://www.nhs.uk

If you are pregnant, trying to become pregnant, or breastfeeding, speak to your doctor or our pharmacist before taking this product. If you suffer from any allergies, ask your doctor or our pharmacist if this medicine is right for you.

Store all medicines out of sight and reach of children.

Please read the included leaflet carefully before using this product.

Please contact your GP if appropriate regarding this product.

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Frequently Asked Questions

Do I need a prescription for this medication?

You do need a prescription for this medication in the UK.

Our healthcare professionals can provide prescriptions if they think this treatment would be right for you and your condition.

When you click the button which reads “Start Consultation” at the top of this page, you’ll see a short questionnaire set up by our healthcare team which is designed to help them understand your medical needs.

Just like an in-person consultation with your GP, our doctors will assess your answers to their questions and write a prescription for the treatment they think will be best for you.

You’ll then be able to pay for your medication and we’ll send it out to you quickly and in discreet packaging.

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