What is Tamiflu
Tamiflu is a prescription only medicine for treating or preventing types of influenza such as swine flu. Tamiflu belongs to a group of medicines named “neuraminidase inhibitors”. These medicines prevent the influenza virus from spreading inside the body and so help to ease or prevent the symptoms arising from the influenza virus infection. Influenza is an infection caused by the influenza virus.
Signs Of Influenza (The Flu)
The signs (symptoms) of influenza include the sudden onset of fever (more than 37.8°C), cough, runny or stuffy nose, headaches, muscle aches and often extreme fatigue. These symptoms may also be caused
by infections other than influenza. True influenza infection only occurs during annual
outbreaks (epidemics) at times when influenza viruses are spreading in the local
community. Outside of the epidemic period, these symptoms will mainly be caused by a different type of infection or illness.
How to take Tamiflu
Always take Tamiflu exactly as your doctor has told you. You should check with your doctor or
pharmacist if you are not sure.
Take Tamiflu as soon as you get the prescription as this will help to slow the spread of the
influenza virus in the body.
Swallow Tamiflu capsules whole with water. Do not break or chew Tamiflu capsules.
The usual dose is as follows:
Treatment
Adolescents (13 to 17 years of age) and adults: For treatment of influenza take one capsule as
soon as you get the prescription and then take one capsule twice a day (usually it is convenient to
take one in the morning and one in the evening for five days). It is important to complete the
whole 5 day course, even if you start to feel better quickly.
30 mg and 45 mg capsules can be used by adults and adolescents as an alternative to 75 mg
capsules.
Infants 1 year of age and older, and children 2 to 12 years of age: Tamiflu oral suspension or
30 mg and 45 mg capsules can be used instead.
Children weighing more than 40 kg and who can swallow capsules may take Tamiflu 75 mg
capsules twice daily for 5 days.
Infants below 12 months of age: Limited pharmacokinetic and safety data are available for
children less than 2 years of age. Pharmacokinetic modeling was undertaken using these data in
addition to data from studies in adults and children older than 1 year of age. The results
demonstrate that doses of 3 mg/kg twice daily for infants aged 3 to 12 months and 2.5 mg/kg
twice daily for infants aged between 1 and 3 months provide exposures similar to those shown to
be clinically efficacious in adults and children older than 1 year of age (see table below for
weight-based dosing recommendations). There are currently no data available in infants less than
1 month of age using Tamiflu.
Age Recommended dose for 5 days (Treatment)
- 3 months to 12 months 3 mg/kg twice daily
- 1 month to 3 months 2.5 mg/kg twice daily
- 0 to 1 month 2 mg/kg twice daily
- Administration of Tamiflu to infants less than one year of age should be based upon the judgment
of the physician after considering the potential benefit of treatment versus any potential risk to the
infant.
Prevention
Tamiflu can also be used for prevention of influenza following exposure to an infected individual,
such as family members.
Adolescents (13 to 17 years of age) and adults: When used to prevent influenza following
exposure to an infected individual, such as family members, Tamiflu should be taken once daily
for 10 days. It is best to take this dose in the mornings with breakfast.
Infants 1 year of age and older and children 2 to 12 years of age: Tamiflu oral suspension or
30 mg and 45 mg capsules can be used instead.
Children weighing more than 40 kg and can swallow capsules may take Tamiflu 75 mg capsules
once daily for 10 days.
Your doctor will recommend the length of time to continue taking Tamiflu, if it is prescribed to
prevent influenza.
Infants below 12 months of age: The recommended prophylaxis dose for infants less than
12 months of age during a pandemic influenza outbreak is half of the daily treatment dose. This is
based upon clinical data in children older than 1 year of age and adults showing that a
prophylaxis dose equivalent to half the daily treatment dose is clinically efficacious for the
prevention of influenza. The following weight-adjusted dosing prophylaxis regimens are
recommended for infants below 1 year of age:
Age Recommended dose for 10 days (Prevention)
- 3 months to 12 months 3 mg/kg once daily
- 1 month to 3 months 2.5 mg/kg once daily
- 0 to 1 month 2 mg/kg once daily
- Administration of Tamiflu to infants less than one year of age should be based upon the judgment
of the physician after considering the potential benefit of prophylaxis versus any potential risk to
the infant.
How can I buy Tamiflu online
You can buy Tamiflu online with or without a prescription at Medical Specialists, after completing a simple online consultation. If you prefer to order Tamiflu UK over the phone, just give us a call and we will be pleased to help. We are the UK’s leading supplier of influenza treatment, and Tamiflu for sale in the UK by a pharmacy is regulated by the Royal Pharmaceutical Society of Great Britain.
For full patient information, please read or print out the leaflet provided at the bottom of this page about Tamiflu.
This patient information leaflet is provided for information purposes only. This leaflet information should not be used in contradiction with your Doctor or Pharmacist's advice. Medical Specialists recommend that you carefully read the information leaflet provided with your medication. Medical Specialists will not accept liability for information displayed. Please refer to the leaflet provided with your medication for the latest manufacturer's information.
If you stop taking Tamiflu
There are no side effects when Tamiflu is discontinued prior to advice from your doctor. If
Tamiflu is stopped earlier than your doctor told you, the symptoms of influenza may reoccur.
If you have any further questions on the use of this product, ask your doctor or pharmacist.
Possible Side Effects
Like all medicines, Tamiflu can cause side effects, although not everybody gets them.
Common side effects of Tamiflu
The most common side effects of Tamiflu are nausea, vomiting, diarrhoea, stomach ache and
headache. These side effects mostly occur only after the first dose of the medicine and will
usually stop as treatment continues. The frequency of these effects is reduced if the medicinal
product is taken with food.
Less common side effects of Tamiflu
Adults and adolescents (children aged 13 years and older)
Other less common side effects, which may also be caused by influenza, are upper abdominal
fullness, bleeding in the gastrointestinal tract, bronchitis, upper respiratory tract infections,
dizziness, tiredness, sleeping difficulties, skin reactions, mild to severe liver function disorders,
visual disturbances and heart rhythm abnormalities.
Influenza can be associated with a variety of neurologic and behavioural symptoms which can
include events such as hallucinations, delirium, and abnormal behaviour, in some cases resulting
in fatal outcomes. These events may occur in the setting of encephalitis or encephalopathy but
can occur without obvious severe disease.
During Tamiflu treatment, events like convulsions and delirium (including symptoms such as
altered level of consciousness, confusion, abnormal behaviour, delusions, hallucinations, agitation,
anxiety, nightmares) have been reported, in a very few cases resulting in accidental injury, in
some instances with fatal outcome. These events were reported primarily among children and
adolescents and often had an abrupt onset and rapid resolution.
The contribution of Tamiflu to
those events is unknown. Such neuropsychiatric events have also been reported in patients with
influenza who were not taking Tamiflu.
Children (aged 1 to 12 years)
Other less common side effects, which may also be caused by influenza, are cough, nasal
congestion, ear inflammation, inflammation of the lungs, sinusitis, bronchitis,
existing asthma, nose bleeding, ear disorders, inflammation of the skin, swelling of the lymph
nodes, conjunctivitis, visual disturbances and heart rhythm abnormalities.
Infants (aged 6 to 12 months)
The reported side effects of Tamiflu when used for treatment of influenza in infants 6 to
12 months of age are similar to the side effects reported for older children (1 year and older).
Infants (aged 0 to 6 months)
The reported side effects of Tamiflu when used for treatment of influenza in infants 1 to 6 months
of age are similar to the side effects reported for infants 6 to 12 months of age and older children
(1 year and older). There are no data available for the use of Tamiflu in infants less than 1 month
of age. Please read the section above for your information.
If you or your child are often sick, you should inform your doctor. You should also tell your doctor
if the influenza symptoms get worse or the fever continues.
If any of the side effects get serious, or if you notice any side effects not listed in this leaflet, tell your doctor or pharmacist.
What to do if you miss your Tamiflu dose
If you forget to take your medicine, take the missed dose as soon as you remember, except if it is 2 hours or less before your next dose. Then continue to take Tamiflu at the usual times. Do not take 2 doses at a time to make up for a missed dose. If you miss several doses, tell your healthcare professional and follow the advice given to you.
Taking Tamiflu with other medication
Tamiflu has been shown to have a minimal chance of negatively interacting with other medications. Your doctor or healthcare professional may recommend taking over–the–counter medications to reduce severity of symptoms while the antiviral action of Tamiflu takes effect on the flu virus. As with any medication, be sure to discuss with your doctor any over–the–counter or prescription medicines you are currently taking before beginning Tamiflu therapy. An intranasal flu vaccine like FluMist®* should not be given within 2 weeks before or 48 hours after taking Tamiflu, unless it is deemed appropriate by your doctor.
Taking Tamiflu if you have kidney disease
If you have any type of kidney disease, talk to your doctor before starting Tamiflu therapy.
Important Safety Information
Tamiflu is prescribed for treating adults and children 1 year and older with influenza (flu) whose symptoms started within the last day or two. Tamiflu can also reduce the chance of getting the flu in patients 1 year and older. Tamiflu is not a substitute for the annual flu vaccinations (you should still get the flu shot every year).
Before taking Tamiflu, tell your doctor if you are pregnant or nursing, or if you have kidney disease, heart disease, respiratory disease, or other serious health conditions. Also, let your doctor know if you are taking any other medications or if you have received nasally administered influenza virus vaccine during the past two weeks.
If you develop an allergic reaction or a severe rash, stop taking Tamiflu and contact your healthcare professional immediately, as it may be very serious. People with the flu, particularly children and adolescents, may be at an increased risk of self injury and confusion shortly after taking Tamiflu and should be closely monitored for signs of unusual behaviour. A healthcare professional should be contacted immediately if the patient taking Tamiflu shows any signs of unusual behaviour.
The most common side effects are mild to moderate nausea and vomiting.