This invention discloses composition and manufacturing processes of a toxicity free botanical drug formulation for curative treatment of chronic diseases. It is manufactured from plants Crinum asiaticum and Crocus sativus. This drug was administered to human volunteers by oral and intranasal routes in effective amount for an effective time period. Effective amount and effective time of administration varies from one human volunteer to another depending upon age, body weight, length of disease, severity of disease, type of the disease. In vitro experiments show that this botanical drug causes proliferation and differentiation of stem cells.