PLEASE NOTE: WE CANNOT CURRENTLY SUPPLY RELENZA AS THERE ARE NO UK STOCKS AVAILABLERelenza (zanamivir) should only be taken if prescribed by a registered doctor. It
is an inhaled medicine. It can be prescribed to treat and prevent influenza in people over 5 years of age. It
has been shown to be effective against both Influenza A and B. It inhibits enzymes in the influenza virus
which stop the virus from reproducing and spreading. This shortens and reduces the severity of ‘flu if taken
within 2 days of the start of symptoms and can prevent against infection.
Relenza should not be taken by people are allergic to lactose or milk protein or if you are breast feeding. If
you have asthma, COPD or emphysema, tell your doctor before he prescribed Relenza. Relenza can be taken with
paracetamol, ibuprofen or aspirin. If you use another inhaled medicine use these first before you take relenza
and make sure you have enough of your "reliever" medicine before you start taking relenza.
Relenza can cause side effects. Common side effects are headache, earache, sore throat, cough which can be
chesty, runny or blocked nose and tummy discomfort or upset (including feeling or being sick, or having diarrhoea).
These symptoms can also be due to flu and so may not have been caused by Relenza. If you experience any of the
following stop taking relenza immediately and consult your doctor:
- Tightness of the chest, shortness of breath or difficulty in breathing
- Swelling of the face, throat or mouth
- Skin rash or "hives" (lumpy itchy nettle rash)
These side effects are very rare.
To treat ‘flu for people of 5 years or older, breathe in (inhale) the contents of 2 blisters (2 x 5 mg), one at a
time through the mouth, twice daily - morning and evening - for 5 days. This means that you inhale the powder
contained in four blisters every day. The full 5 day course should be taken.
To prevent ‘flu following close contact with an individual who is infected, the normal dose of relenza is two
inhalations (2 x 5 mg) once daily for 10 days. Therapy should begin as soon as possible and within 36 hours of
exposure to an infected person. The full 10 day course should be taken.
The recommended dose of relenza for prevention of influenza during a community outbreak is 2 inhalations (2 x 5 mg)
once daily for up to 28 days.