The doctor prescribes Lenakast 25 mg capsule to people suffering from multiple myeloma and myelodysplastic syndrome. It treats it by affecting or controlling the works of the immune system. Other necessary information like dosage, how long to take it, when to report etc will be decided by the doctor. It will depend on what condition are you being treated for and its progress.
Make sure that you are not taking the medicine at the wrong time or overdosing because can cause serious side effects. Also, you must keep patience as the benefits do not get noticed quickly. It can take several weeks and months to be properly visible, so continue your medication until the doctor tells you to stop.