Well, i have been using the GYMNEMA SYLVESTRE 500 MG. My a1c has dropped from 14% to 6%, normal a1c is 4% to 6%. I am now from type 2 diabetic to pre diabetic. It seems to be working for me. I also take metformin 2,000 mg. Per day. Normal sugar level is 80 to 120. Mine drops to 81 now.