Influenza A virus vaccine, h5n1, inactivated (Injection)


Influenza A Virus Vaccine, H5N1, Inactivated (in-floo-EN-za AY VYE-rus VAX-een, H5N1, in-AK-ti-vay-ted)

Keeps you from getting sick with an influenza virus ("catching the flu").

Brand Name(s)

When This Medicine Should Not Be Used

How to Use This Medicine


  • Your doctor will prescribe your exact dose and tell you how often it should be given. This medicine is given as a shot into one of your muscles.
  • A nurse or other health provider will give you this medicine.

If a dose is missed:

  • It is very important that you receive the second dose on schedule. If you missed the second dose or if you must cancel the appointment for the second dose, make another appointment as close to that date as possible.

Drugs and Foods to Avoid

Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.

  • Make sure your doctor knows if you are using medicine that weakens your immune system, such as a steroid or cancer treatment. This vaccine may not work as well if you are also using these medicines.

Warnings While Using This Medicine

  • Make sure you doctor knows if you are pregnant or breastfeeding, or if you have ever had an allergic reaction to chicken or egg products. Also tell your doctor if you have any problems with your immune system or if you have a severe nerve and muscle problem called Guillain-BarrĂ© syndrome (GBS).
  • Tell your doctor if you have ever had severe reactions to previous influenza vaccinations.
  • This medicine will not treat flu symptoms if you already have the virus.

Possible Side Effects While Using This Medicine

Call your doctor right away if you notice any of these side effects:

  • Allergic reaction: Itching or hives, swelling in your face or hands, swelling or tingling in your mouth or throat, chest tightness, trouble breathing
  • Fever, chills, cough, runny or stuffy nose, sore throat, and body aches.

If you notice these less serious side effects, talk with your doctor:

  • Diarrhea or nausea.
  • Headache.
  • Muscle pain
  • Pain, redness, swelling, or tenderness where the shot was given.
  • Tiredness or weakness.

If you notice other side effects that you think are caused by this medicine, tell your doctor

Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088

Version Info

  • Last reviewed on 8/4/2014

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission ( URAC's accreditation program is an independent audit to verify that A.D.A.M. follows rigorous standards of quality and accountability. A.D.A.M. is among the first to achieve this important distinction for online health information and services. Learn more about A.D.A.M.'s editorial policy, editorial process and privacy policy. A.D.A.M. is also a founding member of Hi-Ethics and subscribes to the principles of the Health on the Net Foundation (

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- 2013 A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.