Drugs >  Zanamivir
Zanamivir
Pronunciation
Brand Names
Therapeutic Categories
Reasons not to take this medicine
What is this medicine used for?
How does it work?
How is it best taken?
What do I do if I miss a dose?
What are the precautions when taking this medicine?
What are the common side effects of this medicine?
What should I monitor?
Reasons to call healthcare provider immediately
How should I store this medicine?
General statements

Pronunciation
(za NA mi veer)

Brand Names
Relenza®

Therapeutic Categories
Antiviral Agent

Reasons not to take this medicine

  • If you have an allergy to zanamivir or any other part of the medicine.


What is this medicine used for?

  • This medicine is used to treat the flu. It shortens the length of symptoms by about 1 day. It will do nothing for the common cold. It may be used for adults and children 7 years or older.


How does it work?

  • Zanamivir prevents the flu from spreading inside the body. You already have the flu, but this medicine attacks the flu virus.


How is it best taken?

  • To gain the most benefit, do not miss doses.
  • Take 2 doses on the first day of treatment if possible. Separate by at least 2 hours that first day.
  • For inhaling (puffing) only.
  • Begin medicine as soon as possible. Start as soon as you get it.
  • Take in the morning and evening for 5 days.
  • Read and follow directions enclosed with medicine. If you are not sure how to use then talk with healthcare provider.
  • Children who use should be instructed by an adult for correct use.
  • Make sure you are drinking enough liquids unless told to drink less by healthcare provider. Avoid products with caffeine.
  • Take entire prescription as directed even if feeling better.


What do I do if I miss a dose?

  • Take a missed dose as soon as possible.
  • If it is almost time for the next dose, skip the missed one. Return to your regular schedule.
  • Do not take a double dose or extra doses.


What are the precautions when taking this medicine?

  • This medicine is not to be taken in place of the flu shot. If healthcare provider has recommended the flu shot then you need to get it.
  • Tell healthcare provider if you have lung disease such as asthma or chronic obstructive pulmonary disease. This medicine is not generally used in patients with these diseases.
  • Tell healthcare provider if you are allergic to any medicine. Make sure to tell about the allergy and how it affected you. This includes telling about rash; hives; itching; shortness of breath; wheezing; cough; swelling of face, lips, tongue, throat; or any other symptoms involved.
  • Tell healthcare provider if you are pregnant or plan on getting pregnant.
  • Tell healthcare provider if you are breast-feeding.


What are the common side effects of this medicine?

  • Nasal and throat discomfort.
  • Headache. Mild pain medicine may help.
  • Cough.
  • Nausea or vomiting. Small frequent meals, frequent mouth care, sucking hard candy, or chewing gum may help.
  • Diarrhea.


What should I monitor?

  • Changes in the flu. Is it better, worse, or about the same?


Reasons to call healthcare provider immediately

  • Signs of a life-threatening reaction. These include wheezing; tightness in the chest; fever; itching; bad cough; blue skin color; fits; swelling of face, lips, tongue, throat.
  • Any wheezing or shortness of breath after using the medicine. Stop using the medicine.
  • Any rash.
  • No improvement in condition or feeling worse after 3 or 4 days.


How should I store this medicine?

  • Store at room temperature.


General statements

  • Do not share your medicine with others and do not take anyone else's medicine.
  • Keep all medicine out of the reach of children and pets.
  • Keep a list of all your medicines (prescription, herbal/supplements, vitamins, over-the-counter) with you. Give this list to healthcare provider (doctor, nurse, pharmacist, physician assistant).
  • Talk with healthcare provider before starting any new medicine, including over-the-counter or natural products (herbs, vitamins).


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