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Tamiflu (oseltamivir)

$84.00$390.00

amiflu is an antiviral drug used to prevent and treat the influenza virus. Available to buy online from Dr Fox.
Are there any special precautions with Tamiflu?
Tamiflu is only effective against the influenza virus – and not against any other types of virus.

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Tamiflu (oseltamivir)

Tamiflu is an antiviral drug used for the prevention and treatment of the influenza virus.

Tamiflu is the brand name of the drug. The active ingredient is called oseltamivir.

How does Tamiflu work?
Influenza (flu) is caused by infection with the influenza virus. Tamiflu (oseltamivir) works by stopping the influenza virus from reproducing. It does this by blocking the effect of neuroaminidase enzymes, which are present in the viral cell wall.

Antibiotics are only effective against bacterial infections. To treat viral infections such as flu, an antiviral medication is needed.

What is a Tamiflu used for?
Tamiflu is licensed as a treatment for flu, and also for anyone who has been in contact with flu, to reduce the likelihood of them developing the infection.

Tamiflu (oseltamivir) is not an alternative to have a flu jab (vaccine). If you are at risk, flu jabs are highly recommended.

How do you take Tamiflu?
Each Tamiflu capsule contains 75mg of oseltamivir. The recommended doses for adults weighing 40kg and over are below.

To treat influenza – the adult dose is one 75mg capsule twice a day, for 5 days. It should be started within 2 days of onset of symptoms for best results.
To prevent an attack of flu – the adult dose is one 75mg capsule per day, for 10 days.
Swallow the Tamiflu capsule whole – do not break it or crush it.
Tamiflu can be taken with or without food – taking it with food can reduce the chance of feeling or being sick.
For more information See the Tamiflu Patient Information Leaflet.

What to do if you miss a dose of Tamiflu?
If you miss a dose, take it as soon as you remember and take the next one on time. This is unless it is less than 2 hours to your next capsule, whereupon leave this dose out. Do not take 2 Tamiflu capsules at the same time.

How effective is Tamiflu?
Initial clinical trials with Tamiflu were promising. One study in the year 2000 concluded that Tamiflu started within 36 hours of onset of symptoms reduced the duration of the episode by 30%, and the severity by 40%. Flu complications, such as bronchitis/pneumonia were also reduced.

Another study took a group of people who had been in contact with someone suffering with flu. This group was split into two smaller groups: one group were given Tamiflu and the other group a placebo. 12% of the placebo group developed the flu, compared to 1% in the Tamiflu group. This was statistically significant.

The manufacturer’s own studies reported that Tamiflu reduced the infectiousness of the influenza virus.

However since this time, other studies have had less impressive results. Critics have concluded that some of the evidence about Tamiflu was possibly exaggerated, and also that the side effects were not necessarily clearly presented.

The Cochrane Library systematically collated and reviewed all the published evidence about Tamiflu in several reports between 1999-2014. They concluded that Tamiflu (oseltamivir) only shortens an episode of flu by 16.8 hours. They raised concern about the frequency and severity of side effects, especially psychiatric conditions such as depression, and suicidal thoughts. They failed to confirm a significant benefit from Tamiflu in patients in high risk situations.

Nevertheless, the UK government purchased large quantities of Tamiflu (oseltamivir), in preparation for a supposed bird flu epidemic which never arrived. It remains a possible antiviral remedy for those who choose to take it, specifically for those who take it after exposure to the flu virus, as a form of prophylactic treatment, to prevent them developing the infection.

Are there side effects from usingTamiflu (oseltamivir)?
The list of side effects below is not exhaustive. For more details see the Tamiflu (oseltamivir) Patient Information Leaflet.

Very common side effects (1 in 10 users)
Nausea
Headache
Common side effects (1 in 100 users)
Vomiting
Cough
Abdominal pain
Insomnia
Dizziness
Uncommon side effects (1 in 1,000 users)
Allergic reactions
Skin rashes
Heart arrhythmias
Convulsions
Abnormal liver function tests
Rare side effects (1 in 10,000 users)
Abnormal blood count
Confusion
Anxiety
Delirium
Nightmares
Anaphylaxis
Bleeding from the gastrointestinal tract
Liver failure
Stevens Johnson Syndrome
Erythema multiforme
Are there any special precautions with Tamiflu?
Tamiflu is only effective against the influenza virus – and not against any other types of virus.

Tamiflu is not an alternative to having a flu jab. It is important you have the flu jab if you are aged over 65, pregnant, have a chronic heart or lung condition, or have a weakened immune system.

There is a lack of evidence about the safety or efficacy of Tamiflu taken by patients with chronic heart or lung conditions, or other medical conditions, in particular if you need admission to hospital. If you have a weakened immune system, there is a lack of evidence about the efficacy of Tamiflu. If you have any of these conditions, and are concerned about flu, you are advised to see your doctor, and will not be suitable to purchase Tamiflu online from Dr Fox.

Psychiatric disturbance has been reported in Tamiflu (oseltamivir) users, but also in patients with influenza who are not taking Tamiflu. If you choose to take Tamiflu you should be monitored, and report and change or worsening of any psychiatric symptoms to your doctor.

Tamiflu does not cause drowsiness or affect your ability to drive.

Avoid drinking grapefruit juice with Tamiflu.

Can you use Tamiflu if you are pregnant, or breastfeeding?
Although Tamiflu has not been demonstrated to be associated with any major foetal problems in pregnancy, you are strongly advised to discuss this with your healthcare provider before taking it.

Very low levels are detectable in breast milk, so it is not advisable to take Tamiflu while breastfeeding.

Influenza itself is associated with adverse pregnancy and foetal outcomes, with a risk of major congenital malformations, including congenital heart defects. Pregnant women are strongly advised to have the seasonal flu vaccine.

Can you drink alcohol with Tamiflu (oseltamivir)?
There are no warnings about drinking alcohol with Tamiflu (oseltamivir). However it is always safer to avoid alcohol or drink in moderation while taking medication.

Does Tamiflu interfere with your contraception?
No interactions with any types of contraception are listed.

What are the drug interactions with Tamiflu?
There are no known significant drug interactions with Tamiflu.

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