Extavia
Authorised
This medicine is authorised for use in the European Union
interferon beta-1b
MedicineHumanAuthorised
Overview
Extavia is a medicine used to treat adults who have multiple sclerosis (MS). MS is a disease in which inflammation damages the protective insulation around nerves (demyelination) as well as the nerves themselves. Extavia is used in patients:
- who have experienced the signs of MS for the first time, and these are severe enough to justify treatment with injected corticosteroids (anti‑inflammatory medicines). It is used when the patient is considered to be at high risk of developing MS. Before using Extavia, doctors need to exclude other causes for the symptoms;
- who have MS of the type known as ‘relapsing-remitting’, when the patient has attacks (relapses) between periods with no symptoms (remissions), and with at least two relapses within the last two years;
- who have secondary progressive MS (the type of MS that comes after relapsing-remitting MS), when their disease is active.
Extavia contains the active substance interferon beta-1b. This medicine is the same as Betaferon, which is already authorised in the EU. The company that makes Betaferon has agreed that its scientific data can be used for Extavia.
Extavia can only be obtained with a prescription and treatment should be started by a doctor who has experience in the treatment of MS.
Extavia is available as a powder and solvent that are made up into a solution that supplies a dose of 250 micrograms. It is given by injection under the skin.
Treatment should start with 62.5 micrograms (a quarter of the dose) every other day, increasing progressively over 19 days to reach the recommended dose of 250 micrograms given every other day. The patients can inject Extavia themselves once they have been trained. Extavia treatment should be stopped in patients whose condition does not improve.
For more information about using Extavia, see the package leaflet or contact your doctor or pharmacist.
The active substance in Extavia is the protein interferon beta-1b, one of a group of interferons that can be naturally produced by the body to help it fight against viruses and other attacks. In MS, the immune system (the body’s natural defences) malfunctions and attacks parts of the central nervous system (the brain, spinal cord and optic nerve [nerve that sends signals from the eye to the brain]), causing inflammation that damages the nerves and the insulation around them. The exact way that Extavia works in MS is not yet known but the active substance, interferon beta-1b, seems to calm down the immune system, and prevents relapses of MS.
Extavia was studied over a two-year period in 338 patients with relapsing remitting MS who were able to walk unaided, where its effectiveness was compared with placebo (a dummy treatment). Extavia was more effective than placebo in reducing the number of annual relapses: patients receiving the medicine had on average 0.84 relapses a year, when patients on placebo had 1.27 relapses.
Extavia has also been studied in 1,657 patients in two studies involving secondary progressive MS patients who were able to walk, where it was compared with placebo. One of the two studies showed a significant delay in the time to disability progression (31% risk reduction due to Extavia) and in the time to becoming wheelchair bound (39%). In the second study, no delay in the time to disability progression was seen. In both studies, Extavia showed a reduction in the number (30%) of clinical relapses.
In a study involving 487 patients with a single demyelinating event, treatment with Extavia for two years was shown to reduce the risk of developing clinically defined MS: 28% of the patients who received Extavia developed MS, compared with 45% of those who received placebo.
The most frequent side effects with Extavia are flu-like symptoms (including fever, chills, joint pain, malaise [feeling unwell], sweating, headache and muscle pain) and reactions at the site of injection. Side effects are common at the beginning of treatment but usually decrease with further treatment.
Extavia must not be used in patients who have severe depression or have thoughts of suicide. Extavia must not be used in patients who have decompensated liver disease (when the liver is damaged and can no longer work adequately).
For the full list of side effects and restrictions with Extavia, see the package leaflet.
The European Medicines Agency decided that Extavia’s benefits are greater than its risks and it can be authorised for use in the EU.
Recommendations and precautions to be followed by healthcare professionals and patients for the safe and effective use of Extavia have been included in the summary of product characteristics and the package leaflet.
As for all medicines, data on the use of Extavia are continuously monitored. Side effects reported with Extavia are carefully evaluated and any necessary action taken to protect patients.
Extavia received a marketing authorisation valid throughout the EU on 20 May 2008.
Product information
Latest procedure affecting product information: II/0116/G
08/12/2022
This medicine’s product information is available in all official EU languages.
Select 'available languages' to access the language you need.
Product information documents contain:
- summary of product characteristics (annex I);
- manufacturing authorisation holder responsible for batch release (annex IIA);
- conditions of the marketing authorisation (annex IIB);
- labelling (annex IIIA);
- package leaflet (annex IIIB).
Product details
- Name of medicine
- Extavia
- Active substance
- interferon beta-1b
- International non-proprietary name (INN) or common name
- interferon beta-1b
- Therapeutic area (MeSH)
- Multiple Sclerosis
- Anatomical therapeutic chemical (ATC) code
- L03AB08
Pharmacotherapeutic group
ImmunostimulantsTherapeutic indication
Extavia is indicated for the treatment of:
- patients with a single demyelinating event with an active inflammatory process, if it is severe enough to warrant treatment with intravenous corticosteroids, if alternative diagnoses have been excluded, and if they are determined to be at high risk of developing clinically definite multiple sclerosis;
- patients with relapsing-remitting multiple sclerosis and two or more relapses within the last two years;
- patients with secondary progressive multiple sclerosis with active disease, evidenced by relapses.
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