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Buy TAMIFLU safely, securely and easily in a few simple steps. Start a consultation today to check your eligibility with a prescribing clinician, at no cost to you.

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This content is intended for UK audiences only

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Manufactured by Roche


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Dispensed in the UK
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Updated on 26 Mar 2024

What to do if you missed your TAMIFLU dose

The MHRA's reporting program for suspected side effects to medicines, vaccines, e-cigarettes, medical device incidents, defective or falsified (fake) products to the Medicines and Healthcare products Regulatory Agency to ensure safe and effective use.

Learn more about reporting side effects

About Tamiflu

Tamiflu, manufactured by Roche, contains oseltamivir (neuraminidase inhibitor) an antiviral drug as its active ingredient. It is used for the prevention and treatment of influenza A and influenza B, which both cause seasonal flu.

Tamiflu is prescribed to patients that have had flu symptoms for under 48 hours but are at high risk of complications. It is also prescribed to vulnerable patients at risk of influenza infection, that have been exposed to the flu virus to prevent them from developing symptoms.

NowPatient offers Tamiflu as a treatment for influenza only, following an online consultation with a prescribing clinician.

Key facts of Tamiflu

  • For the treatment and prevention of seasonal flu caused by influenza viruses A and B
  • Tamil has some common side effects which include headaches, nausea, and vomiting
  • It can be dangerous if you take Tamiflu with certain medications. If you’re not sure if it is safe, discuss this with the prescribing clinician
  • Tamiflu is not an alternative for the annual flu vaccination

Who is Tamiflu suitable for?

Tamiflu is suitable if you are:

  • Over 65 years old
  • Have a weakened immune system
  • Have diabetes
  • Have a neurological condition

Who is Tamiflu not suitable for?

Tamiflu may not be suitable for some people. To make sure it’s safe for you, speak to the prescribing clinician about other medical conditions you may before taking Tamiflu if you:

  • Have had an allergic reaction to the active ingredient oseltamivir phosphate
  • Have bacterial infections
  • Have kidney disease, liver or heart problems

How and where to get Tamiflu?

Tamiflu is available with a prescription only. It is not available over the counter at a pharmacy.

NowPatient does not allow customers to buy Tamiflu directly. Our service is certified, safe and effective, and we only ever treat conditions. If you book a consultation with a prescribing clinician for the treatment of influenza, you can discuss if Tamiflu is a suitable treatment option for you.

At the end of the consultation, the clinician will decide if a treatment plan is suitable for you. If it is, the clinician will issue you with a prescription which can then be ordered, paid for and delivered directly to your chosen address by NowPatient.

Dosage and strength for Tamiflu for influenza

Tamiflu is available as a 75 mg capsule when used for influenza.

Information about how to use Tamiflu for influenza

Tamiflu should be taken orally each day for 5-10 days. Take Tamiflu as follows:

  • Adults over 40kg: Two 75mg capsules every day for 5 days
  • Preventing flu in adults over 40kg: One 75mg capsule every day for 10 days

If you forget to take a dose of Tamiflu, take it as soon as you remember, but do not double up your doses to replace a missed dose, and do not take a Tamiflu capsule less than 2 hours before your next dose is due.

Please read the patient information leaflet provided or speak to a healthcare professional for further advice.

What happens if you take too much Tamiflu?

If you take more than prescribed, then it can lead to some unpleasant side effects. You should talk to your doctor or reach out to one of our prescribing clinicians, if you have taken too much Tamiflu and you experience any of the following side effects:

What are the side effects of Tamiflu?

In clinical trials side effects of Tamiflu when compared to placebo are split into common and serious.

Most common side effects include:

  • Headaches, dizziness, tiredness
  • Nausea and vomiting
  • Cold sores
  • Bronchitis
  • Sore throats, coughs, runny noses
  • Fevers
  • Stomach aches

If you experience any serious side effects, you should contact NHS 111.

If you experience a serious allergic reaction with the signs shown below you should contact emergency services on 999.

  • Your lips, mouth, throat or tongue suddenly become swollen
  • You’re breathing very fast or struggling to breathe (you may become very wheezy or feel like you’re choking or gasping for air)
  • Your throat feels tight or you’re struggling to swallow
  • Your skin, tongue or lips turn blue, grey or pale (if you have black or brown skin, this may be easier to see on the palms of your hands or soles of your feet)
  • You suddenly become very confused, drowsy or dizzy
  • Someone faints and cannot be woken up

Always report adverse effects to the MHRA yellow card reporting system. You can read more about this here How and where do I report side effects of my medication? – NowPatient

Information about taking Tamiflu at the same time as other medications or herbal supplements

There is not enough evidence to suggest there are any drug interactions between herbal supplements and Tamiflu. In any event, you should let your prescribing clinician know if you are taking any herbal supplements.

Can Tamiflu taken for influenza be taken long term?

The recommended treatment time with Tamiflu is 5 to 10 days. If your condition has not improved within this time, speak to your doctor for further medical advice.

Is there a herbal Tamiflu?

No. Herbal Tamiflu does not exist. If you have been marketed such a formulation, it may be fake.

Can women use Tamiflu?

Women can take Tamiflu for the treatment of influenza. Pregnant women however, may be advised not to take Tamiflu. Speak to your doctor before taking Tamiflu if you’re pregnant or breastfeeding.

Should I avoid any particular food or drink when taking Tamiflu?

You can eat and drink normally when taking Tamiflu for influenza. However, alcohol may increase the severity of your flu symptoms, so you are advised to limit your alcohol intake to allow yourself to recover.

What lifestyle changes can I make to help me with influenza?

  • Avoid close contact with people suspected of having the flu
  • Stay home when you are not feeling well
  • Cover your mouth and nose when coughing or sneezing
  • Clean your hands regularly
  • Avoid touching your eyes, nose or mouth.

Alternatives to Tamiflu

An alternative for the treatment of the flu virus includes zanamivir (Relenza).


Medical Disclaimer

NowPatient has taken all reasonable steps to ensure that all material is factually accurate, complete, and current. However, the knowledge and experience of a qualified healthcare professional should always be sought after instead of using the information on this page. Before taking any drug, you should always speak to your doctor or another qualified healthcare provider.

The information provided here about medications is subject to change and is not meant to include all uses, precautions, warnings, directions, drug interactions, allergic reactions, or negative effects. The absence of warnings or other information for a particular medication does not imply that the medication or medication combination is appropriate for all patients or for all possible purposes.

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