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What is Tamiflu?

Tamiflu is a prescription medication that helps treat influenza symptoms. It is a brand-name drug also available as the generic medication under the name –  oseltamivir. This medicine is readily available on a doctor’s prescription. You can either buy Tamiflu online or get it from your local drugstore if you have a doctor’s prescription. 

This drug belongs to the class of medication known as antivirals. This drug is an influenza neuraminidase inhibitor; it prevents the virus from multiplying inside the body. 

This medicine is available in two forms; both you can take orally. The two types of this drug are capsules and liquid. You can find the capsules in three strength – 30mg, 45mg, and 75mg. The oral suspension is available in 6mg/mL packets.


The primary use of this drug is to treat influenza infection symptoms. However, doctors also often prescribe this medicine for preventing influenza in people exposed to the flu virus but have not developed symptoms.

While it is an effective medication against the flu, it does not have any efficacy against the common cold. If you have a common cold, this medicine will not help you feel better. 

Two clinical studies observing adults with flu looking for their symptoms to improve or disappear found that people taking Tamflu took 1.3 fewer days to recover from flu than those who were getting a placebo.

In a study involving children, researchers found that those who took Tamiflu took 1.5 fewer days to recover than those taking a placebo.

A study conducted to test Tamiflu’s effectiveness to prevent flu concluded that among those who took this drug, only 1% developed the flu. However, 4% to 12% of the people who do not take this medicine developed flu symptoms.

How to take Tamiflu?

Consume this medicine as prescribed by the doctor. Make sure to follow the prescription label and the medication guide you get when you order Tamiflu online to maximize this drug’s benefits. Try not to use more than the prescribed quantity and avoid using this drug for more than the recommended period. 

Start using the drug as soon as possible after the appearance of flu symptoms, like chills, muscle aches, fever, sore throat, and stuffy or runny nose. 

Consume the medication with a glass of water. If you are taking the oral suspension, thoroughly mix it with water. Use standard measuring equipment to measure the dosage. Do not use a kitchen spoon as a measuring device, as that might give you inconstant doses, increasing the risk of adverse effects.

Doctors recommend taking Tamiflu every 12 hours for five days to treat flu symptoms.

For preventing flu symptoms, doctors prescribe to take this medicine once every 24 hours for ten days. 

Avoid quitting the medicine before the completion of the treatment period, even if the symptoms improve early. Inform the doctor if the symptoms do not improve or get worse.

Side effects

When using this medicine, you should be aware of its side effects. Like any potent drug, it can also cause some mild to severe adverse effects. Make sure to take proper precautions to minimize the risk of adverse effects. Not everyone who uses this medicine encounters its side effects. However, if you buy Tamiflu online and start using it without consulting a doctor, you will have a high probability of facing this drug’s severe side effects.

Common side effects

  • Headache
  • Vomiting
  • Nausea
  • General body pain

These side effects generally vanish after a couple of days without requiring any treatment. However, it would help if you still let the doctor know about these adverse effects. 

Serious side effects

  • Hallucinations
  • Unusual behavior
  • Tremors
  • Shaking 
  • Sudden confusion 

These symptoms might turn severe if not treated in time. So, inform the doctor about them at the first appearance. If you feel the intensity of these effects increasing, visit the ER or call 911 without wasting any time.  


While this medicine does not directly interact with any other medication, it can interact with specific supplements and food items. If you plan on using Tamiflu, try talking to a doctor about its safety with other substances to avoid facing any adverse effects.

You can tell the doctor about all the over-the-counter and prescription medications you are taking and any vitamins or herbal items you are consuming before beginning the treatment.

This medicine can interact with the flu vaccine. If you get vaccinated while using this drug, the vaccine might become less or ineffective due to this medicine. Try consulting a doctor before getting any vaccination if you are using this drug.


Doctors recommend taking various steps while using this drug to minimize the risk of side effects. If you plan to buy Tamiflu online and use it for the flu, make sure to follow the standard precautions to be safe. You can go through the list of what to do and avoid for maximizing this drug benefits below:

  • This drug is most effective when used within two days of the appearance of symptoms. The longer you wait, the less effective this medicine will become. 
  • It might take a few days before you feel improvement in your symptoms, so don’t rush and follow your doctor’s advice. 
  • Try not to use this medicine without consulting a doctor if you have kidney disease, hereditary fructose intolerance, brain disorder, heart disease, chronic lung disease, or any other medical condition.
  • Avoid consuming alcohol or other intoxicating substances while using this drug because it can worsen its side effects.
  • This medicine might harm the unborn child, so during pregnancy, only use this drug if your doctor recommends it.
  • This drug can pass into breastmilk and might have undesirable effects on the nursing infant. Try talking to a doctor before breastfeeding if you are using this medicine.

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