Imatinib is the active substance used to treat chronic myelogenous leukemia (CML), Ph+ ALL, GIST, HES, and CEL. Over 90% of the CML patients got the philadelphia chromosome, responsible for the disease. Treatment with imatinib is usually relatively well tolerated. Side effects may include nausea, vomiting (rare), rash, edema, pleural and pericardial effusions, transaminases, and muscle cramps may occur. The imatinib price in India is reasonable and is available in the form of tablets with the strength of 100mg and 400mg.