Prescription onlyClass: Infection


(varicella vaccine)

Prescription onlyClass: Infection
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Prevents varicella, also known as chickenpox.

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Our bottom line

Varivax (Varicella Vaccine) is a safe and effective vaccine for the chickenpox.

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  • Varivax is very safe. It prevents the chickenpox infection in 70 to 90 percent of vaccinated kids.
  • Getting vaccinated with Varivax decreases the number of days children miss school and parents miss work.
  • There is no thimerosal or other preservatives in Varivax.
  • Most people who get Varivax have no side effects.
  • Children who develop chickenpox after being vaccinated are less contagious than unvaccinated children.


  • After being vaccinated with Varivax (Varicella Vaccine), children still have a 20% chance of getting a mild case of chickenpox (varicella).
  • You may get a rash or feel sore at the site of the injection.
  • Some people have felt tired or fussy after getting Varivax (Varicella Vaccine).
  • Some adults get a mild fever two weeks after receiving Varivax (Varicella Vaccine).
  • Since it's a live vaccine, it can't be used in pregnant or people with a weak immune system. Check with your doctor or pharmacist what'll be best for you.
How it works

Varivax (Varicella Vaccine) is a live (but weaken) vaccine that protects against varicella, also known as chickenpox. Allows your body to build memory to protect against the virus, but doesn't cause an actual infection in people with a normal immune system.

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Side effect rates for Varivax (varicella vaccine)

  • Injection-site complaints
  • Fever ≥102.0°f (38.9°c) oral
  • Fever ≥100.0°f (37.8°c) oral
  • Varicella-like rash (generalized)
  • Varicella-like rash (injection site)

Risks and Warnings for Varivax (varicella vaccine)

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  • An epinephrine injection should be available for use immediately after receiving Varivax (Varicella Vaccine) because some patients may have an allergic reaction.

Common concerns from people taking Varivax (varicella vaccine)

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