Extavia (beta interferon-1b)

Extavia is a disease modifying drug for relapsing remitting MS. It is an injection you self inject just under the skin every other day. it comes as a powder and solution you mix up just before you inject yourself. Your MS Nurse will give you full training on how to mix it up and inject it. To give your body a chance to get used to Extavia and reduce the impact of side effects, your doctor or MS nurse may suggest you start on a lower dose and gradually increase to the full dose.

Side Effects

Common side effects may include

  • flu-like symptoms
  • headache
  • injection site reactions
  • blood cell abnormalities
  • feeling weak or tired
  • difficulty sleeping
  • diarrhoea, nausea and vomiting
  • muscular or joint pain
  • infections

Less common side effects may include

  • changes in menstruation (periods)
  • neurological symptoms, mood changes, depression
  • liver abnormalities
  • allergic reactions
  • heart problems and hypertension
  • hair thinning or loss
  • damage to small blood vessels leading to kidney problems

A full list of side effects is included in the manufacturer’s Patient Information Leaflet

What Extavia Patients Say