It is a combination of Ibrutinib, a Bruton's Tyrosine kinase inhibitor. Nitib 140mg Capsule Treat Several B-cell Cancer including Mantle Cell Lymphoma and Chronic Lymphocytic Leukemia. It works through the inhibition of signalling proteins of cancer cells, which signal them to grow. You can get this capsule from Magicine Pharma in modest price range.