Zanamivir is prescribed for influenza virus A and B infections.
Pharmacodynamics Zanamivir is a strong
and highly selective inhibitor of neuraminidase(the surface enzyme of the influenza virus).
It will give you more information about Zanamivir and provide you with full instructions for using the Diskhaler® with the powder blisters.
Zanamivir(eg. Relenza):
the drug(class: neuraminidase inhibitors) should be taken by inhalation at a dose of 10 mg every 12 hours, for 5 days.
Zanamivir is a course of treatment which usually lasts 5-10 days,
although it can sometimes be prescribed for up to 28 days during an epidemic.
Another antiviral medicine called
oseltamivir is often prescribed in preference to Zanamivir, so you will have been prescribed
Zanamivir because oseltamivir is not suitable for you for some reason.
If you use a reliever inhaler(such as salbutamol)
keep this with you while you are using Zanamivir, just in case you feel breathless and you need to use it.
NB: the National Institute for Health and Care Excellence(NICE)
has stated that Zanamivir and oseltamivir can be used for the prevention and treatment of influenza-
but are not a substitute for vaccination[9].
If you regularly use other inhalers and these are due at the same time as Zanamivir,
use your usual inhalers first and then wait a few minutes before you use Zanamivir.
Although you can take Zanamivir if you are expecting or feeding a baby,
it is important that your doctor knows about this so that you can be made aware of the benefits and any risks of treatment.