I Have Had And Colostomy Reversal And I Only Have

I have had and colostomy reversal and i only have a small portion of my stomach intestine thats attached to a small piece of whats left of my larger intestines i also have had heart problems with irregular heart beats i have been trying to loose weight at least 70 to 90 pounds with hydroxycut but im afraid its not health for my conditions what should i do is it safe to take