Thalix 50mg Capsule belongs to the class of medications called immunomodulatory agents. It consists of the active ingredient Thalidomide. It is primarily indicated to treat patients recently diagnosed with multiple myeloma. Multiple myeloma is a type of cancer mainly affecting certain white blood cells called the plasma cell. These cells grow uncontrolled and accumulate in the bone marrow, damaging the bones and kidneys. It is also prescribed for treating moderate to severe new lesions in leprosy. Leprosy is a chronic disease that affects the skin and nerves and is caused by a bacteria called Mycobacterium leprae.