Kryxana 200mg Tablet is an anticancer medication containing the active ingredient ribociclib. Cancer is a condition in which cells multiply in an uncontrolled and abnormal manner. It is used in women to treat a type of breast cancer (hormone receptor-positive, HER2-negative breast cancer) that is locally advanced or has spread to other parts of the body. This medication is given in combination with other medications. It can also be used in the treatment of endometrial cancer in combination with other drugs. It works by inhibiting the activity of certain proteins, which regulate cell growth and division. By blocking these proteins, it can slow down or stop the growth of cancer cells.