User:Mr. Ibrahem/Varicella zoster immune globulin

Varicella zoster immune globulin (VZIG, VarIg), sold under the brand name VariZIG, is a medication used following exposure to varicella zoster virus (chickenpox or shingles) in those at high risk for the disease. Those at high risk include those without immunity who are pregnant or immunocompromised. It is given by injection into a muscle.

Common side effects include pain at the site of injection, headache, rash, and nausea. Other side effects may include low blood pressure, fever, and allergic reactions. Care is required in those with IgA deficiency. It is an immune globulin, specifically a gamma globulin, made from the blood of people with high amounts of antibodies against VZV.

Varicella zoster immune globulin has been available in United States since 1978. In the United States it costs about 2,000 USD per 125 IU as of 2021. In the United Kingdom a dose for an adult costs the NHS £2,400.