Varicella virus vaccine (Injection)


Varicella Virus Vaccine (var-i-SEL-a VYE-rus VAX-een)

Varivax® prevents chicken pox (varicella virus). Zostavax® prevents shingles (herpes zoster virus).

Brand Name(s)

Varivax, Zostavax

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 under your skin.
  • A nurse or other health provider will give you this medicine.
  • Varivax®
    • Most people who need the Varivax® vaccine will need 2 shots. Children 12 months to 12 years of age should be give the second shot no sooner than 3 months after the first vaccine. Teenagers and adults should have a booster shot 4 to 8 weeks after the first vaccine. Your doctor can answer specific questions about your situation, especially if you need to follow a different schedule.
  • Zostavax®
    • You should receive only 1 dose of Zostavax®, unless your doctor tells you otherwise.
    • Zostavax® should not be used in place of Varivax® to prevent chicken pox. Zostavax® should also not be used to treat shingles. Zostavax® is only preventive, although it may help ease pain if you get shingles even after receiving the vaccine.
  • Read and follow the patient instructions that come with this medicine. Talk to your doctor or pharmacist if you have any questions.

If a dose is missed:

  • It is important that Varivax® be given at the proper time. If a scheduled shot is missed, call your doctor to make another appointment as soon 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.

  • Varivax® and Zostavax® should not be given with Pneumovax® pneumococcal vaccine. Tell your doctor about your vaccine history, or if you plan to get a flu shot or other vaccines.
  • A child should not take any medicine that contains aspirin or another salicylate for at least 6 weeks after receiving Varivax®. Check the labels of any pain, headache, or cold medicine your child uses to be sure they do not contain aspirin or salicylic acid. In general, children should never be given aspirin because of the risk of Reye syndrome.
  • You or your child should wait 2 months after receiving Varivax® to receive varicella zoster immune globulin (VZIG) or other immune globulin medicines. You or your child should wait at least 5 months after receiving immune globulin, VZIG, or a blood or plasma transfusion before you get the Varivax® vaccine.
  • Tell your doctor if you or your child is using a medicine that weakens your immune system, such as a steroid or cancer medicine. Varivax® and Zostavax® may not work as well, or they could make you sick.

Warnings While Using This Medicine

  • It is not safe to take this medicine during pregnancy. It could harm an unborn baby. Tell your doctor right away if you become pregnant. Avoid getting pregnant for 3 months after getting either the Varivax® or Zostavax® vaccine.
  • Tell your doctor if you are breastfeeding before you are given Varivax® or Zostavax®.
  • The virus that is in this vaccine could be passed to others, even if you (or your child) do not feel sick. Avoid close contact with anyone who has a high risk for chicken pox or shingles infection. The waiting time for Varivax® is at least 6 weeks. High-risk people include pregnant women, newborn babies, and people who cannot fight infection, such as patients who have bone marrow disease, cancer, or AIDS. Talk to your doctor if you might be with a high-risk person.
  • Varivax® may not always prevent chicken pox. Zostavax® may not always prevent shingles.

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
  • Blistering, peeling, or red skin rash
  • Cough, chills, runny or stuffy nose, or cold-like symptoms
  • High fever (at least 102 degrees F in children)
  • Chicken pox
  • Swollen glands where the shot was given
  • Unusual bleeding or bruising

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

  • Headache, or ear, joint, or muscle pain
  • Mild skin rash, itching, or dryness
  • Pain, redness, itching, swelling, rash, or a hard lump where the shot was given

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 12/4/2015

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.