Quick Answer: Why Does Tamiflu Only Work In The First 48 Hours?

Why is Tamiflu bad?

Tamiflu can cause vomiting, nausea, and even hallucinations.

But experts say it’s effective in reducing flu symptoms and is worth the side effects.

Sometimes a cure is worth the side effects.

The flu antiviral Tamiflu might be a good example..

How long does it take for the flu to go away with Tamiflu?

Although Tamiflu can reduce the flu by roughly 1 to 2 days, the flu vaccine is still the best option for fighting flu.

What happens if you take Tamiflu and don’t have the flu?

Chittick says there is no benefit to taking Tamiflu if you don’t have influenza. He explained taking antibiotics or antiviral drugs unnecessarily could lead to bacteria and viruses becoming more resistant.

Whats the difference between Flu A and Flu B?

Unlike type A flu viruses, type B flu is found only in humans. Type B flu may cause a less severe reaction than type A flu virus, but occasionally, type B flu can still be extremely harmful. Influenza type B viruses are not classified by subtype and do not cause pandemics.

When am I no longer contagious with the flu?

The contagious period for the flu begins about 1 day before symptoms start and can last as long as 5-7 days from when you first felt sick. You’re generally contagious with a cold 1-2 days before your symptoms start, and you could be contagious as long as your symptoms are present—in rare cases, up to 2 weeks.

How quickly does Tamiflu start working?

“Tamiflu is an antiviral medication that blocks the actions of the influenza virus in the body,” says Dr. Sterkel. “If it is given within the first 48 hours of onset of symptoms, it can help decrease the length of time the patient feels ill—but only by about one to one and one half days.

Does Tamiflu Work 3 days?

There have also been other observational studies in hospitalized patients that have shown that treatment can provide a benefit when started 3 to 5 days after the onset of symptoms.

Can I stop Tamiflu after 3 days?

There are no side effects when you stop Tamiflu. But if Tamiflu is stopped earlier than your doctor told you, the symptoms of flu may come back. Always complete the course that your doctor prescribed. If you have any further questions on the use of this medicine, ask your doctor or pharmacist.

What are the stages of the flu?

Stages of the Flu—Day by DayFlu Day 0. The day before any influenza symptoms appear, you are already contagious. … Flu Day 1. Flu symptoms hit pretty rapidly on day one. … Flu Day 2. The second day with the flu is pretty miserable—so bad you may not be able to get out of bed. … Flu Day 3. … Flu Day 4. … Flu Day 5. … Flu Day 6. … Flu Day 7.More items…•

Can Tamiflu be taken after 48 hours?

Most studies suggest that oseltamivir is most effective if initiated <48 hours after illness onset; early treatment mitigates severity and reduces duration by 1–3 days [1–5]. drug delivery logistics will be challenging during a pandemic; initiating <48 may not possible.

How long do you have to be on Tamiflu before you are not contagious?

How long am I contagious after the flu? After I take Tamiflu? The Centers for Disease Control and Prevention (CDC) recommends people with the flu to stay home until 24 hours after they are fever free without the use of a fever-reducing medication.

Are you contagious after Tamiflu?

No. You can still make other people sick even if you’re taking antiviral mediations that treat the flu. The CDC recommends four FDA-approved drugs to treat the flu: baloxavir marboxil (Xofluza), oseltamivir (Tamiflu), peramivir (Rapivab), and zanamivir (Relenza). These drugs could shorten the time that you’re sick.

How do I know if my flu is gone?

Flu symptoms, including fever, should go away after about 5 days, but you may still have a cough and feel weak a few days longer. All your symptoms should be gone within 1 to 2 weeks.

How long should you stay home with the flu?

Stay at home while you have the flu, and for at least 24 hours after your fever is gone without the use of fever-reducing medicine. Once your fever is gone for a day, you’re no longer contagious and can return to work or school.

How do I know if Tamiflu is working?

If you can start taking Tamiflu quickly within 48 hours of getting flu symptoms and a positive flu test, it is more likely to work, but still may only shorten your flu by one day….The most common side effects of Tamiflu are:Nausea.Vomiting.Diarrhea.Stomach pains.Dizziness.Headaches.