My father-in-law has been diabetic for many years. He also has blockages in his heart. His doctor has recommended quad bypass surgery. The doctor says he is a good candidate for the sugery, having a strong heart and kidneys. My mother-in-law wants to know if 100 units of lantas a day is unusually high. Also, is anyone familiar with a treatment for clogging blood arteries and viens called EDTA Chelation?