Interferon gamma-1b is made from human proteins. Interferons help the body fight viral
infections.
Interferon gamma-1b is a specific interferon used to prevent infections in people with a
condition called chronic granulomatous disease. Interferon gamma-1b is also used to treat a
congenital bone disorder called osteopetrosis.
Interferon gamma-1b may also be used for other purposes not listed in this medication
guide.