Immunoglobulins are special proteins in the blood that fight infections. Some of our white blood cells make them. They are also known as antibodies. Antibodies are important for the immune system. In immunoglobulin therapy (IVIg), extra immunoglobulins from a donor are injected into your blood.

Immune System
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It is used to treat disorders of the immune system, such as:

  • Autoimmune disease—the body begins to attack its own cells
  • Immunodeficiency—low-functioning immune system
  • Inflammatory diseases
  • Other diseases that weaken the immune system

IVIg can also reduce inflammation in the body. Some conditions, including acute infections, may need IVIg to restore antibodies and boost the immune system.