Glipizide
"Four years ago I tried Metformin for my type 2 diabetes and had a horrific reaction, severe fainting, stomach  pains, diarrhea, cramps, and  discontinued. Tried a second time a few weeks later, had same horrrific reaction.  This week I started Glipizide and in five days I see a drop in my insulin to 115  from  346 at the start of the week.  NO pains, cramps, diarrhea,  and can't believe it.  Feels like a miracle after my metformin experience."