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Generic name: varicella virus (chickenpox) vaccine [var-i-SELL-a-VYE-rus-vak-SEEN]

Drug class: viral vaccines

What is the Varicella vaccine?

Varicella (commonly referred to as chickenpox) can be described as a very common childhood disease that triggers fever as well as skin itching and the appearance of fluid-filled blisters on your skin.Varicella vaccination can be used to fight this disease in children and adults who are at least one year old.

The vaccine works by exposure to a tiny dose of the virus, or a virus-derived protein that causes your body to build up immunity to the disease. This vaccine cannot cure an active disease that has already developed within your body.Like all vaccines, the varicella virus vaccine will not offer protection against illness for everyone.

Side effects of Varivax

Contact emergency medical assistance. If you are experiencing symptoms warning signs of an allergic response (hives and breathing problems or swelling of your throat or face) or a severe skin reaction (fever, sore throat, eye burning, irritation, or an ailment that is purple or red that blisters and peels),

You shouldn't be given a booster vaccination when you experienced a potentially life-threatening allergic reaction within the initial shot. Be aware of any and all adverse reactions you experience following the vaccine. After receiving an additional dose, you'll need to inform your doctor if your previous shot triggered any adverse reactions.

Varivax may cause serious side effects. Contact your doctor immediately if you experience:

  • Problems with walking
  • Seizures;
  • Serious skin issues or skin infections;
  • The fever, chills, cough with mucus, chest pains, and feeling breathless
  • Stiff neck, mild sensitivity;
  • Confusion;
  • Simple bruising, purple, or red spots beneath the skin
  • The sensation of weakness or numbness suddenly occurs to one leg; issues in speech or vision; swelling or pain on one side of the leg.

Common adverse reactions include:

  • Irritability;
  • Fever;
  • A rash that resembles the appearance of chickenpox,
  • Redness, itching, swelling, or pain in the area where the shot was administered

This list does not represent all possible side effects. Other side effects could be present. Contact your doctor to seek medical advice on adverse effects. You can report any adverse reactions directly to Health and Human Services at 1-800-822-7967. US Department of Health and Human Services at 1-800-822-7967

Similar or related drugs

Varicella virus vaccine


It is not recommended to get a booster shot in the event of a life-threatening allergic reaction during the initial shot. Also, you should not get this vaccine if you suffer from any fever-related illness or persistent tuberculosis that isn't currently being managed or have a compromised immune system.

It is not recommended to take this vaccine if you are expecting. Utilize an effective method of birth control in order to stop pregnancy for three months following getting a varicella vaccine.

Before you take this drug

You shouldn't get this vaccine if you are sensitive to gelatin and neomycin or have had a reaction to any vaccine that contains varicella.

It is also recommended not to receive this vaccine if:

  • Fever;
  • Active tuberculosis, which isn't being treated
  • The severe suppression of your immune system due to a disease (such as cancer, HIV, or HIV) or taking certain medications, such as chemotherapy, steroids, or radiation.
  • If you are pregnant or are planning to become pregnant within the next three months,

May cause birth defects. Don't get the varicella vaccination when you are expecting. It is essential to utilize safe birth controls for at least three months following the last dose. Consult your physician when you are pregnant.

Tell your doctor if:

  • You are suffering from an immune system that is weak.
  • Someone in your family has an insufficient immune system
  • You recently had a transfer of blood, taken immune globulin, or other blood products.

Check with your doctor to see if it is safe to breastfeed while taking Varivax.

How to take Varivax?

The vaccine is administered in the form of an injection (shot) beneath the skin in muscles. You can receive this injection in a physician's clinic, office, or pharmacy.Anyone who has not been a victim of chickenpox or had the vaccine must receive one or two doses of the varicella vaccine.Children between 1 and 12 years old are required to receive two doses. The second dose can be administered three months following the first; however, it could wait until the child reaches between four and six years old.

At least 13 people who have not had chickenpox before or received the varicella vaccine must receive two doses of the vaccine, 4–8 weeks apart.The schedule you have for your individual booster may differ from the guidelines. Follow the advice of your physician or the schedule suggested by the nearby health agency.

This vaccine could cause false results in the skin test for tuberculosis, lasting as long as 6 weeks. Be sure to inform any doctor treating patients that you've had an anti-varicella virus vaccination within the last 4 to six weeks.

What happens if I miss the dose?

Make sure you take all doses that are recommended for the vaccine, or else you might not be fully protected from the disease.

What happens if I overdose?

A dose of the vaccine that is too high is highly unlikely.

What should be avoided?

For at least six weeks following the onset of the varicella vaccine, avoid coming into contact with infants or pregnant women who've never had chickenpox, as well as those with an immune system that is weak. There is a risk that you may transmit the virus to someone who has a weak immune system or who has no immunity to chickenpox.

Interaction with other drug

For those who are less than 18, don't take any salicylate-based medicine (such as aspirin, Kaopectate, Pepto-Bismol, and many others) for at least six weeks following the administration of the varicella virus vaccine. Salicylates may cause Reye's syndrome, which is a fatal and often fatal condition that can strike children and teens with chickenpox, and the varicella virus contained in this vaccine may expose the person to a small amount of the virus.

Other drugs can impact the effectiveness of this vaccine, such as prescription and over-the-counter medicines, vitamins, and herbal products. Discuss with your doctor all the other medications you take.