I was taken off Metformin due to something the doctor picked up on my blood test re: kidneys irregularities. Since that time of not taking Metformin ,,, I have had trouble with my legs swelling up with normal walk around the house, cramps in the left thigh area and also my cramps extending to my feet and toes ... cramps are extending to the instep of my foot also . What is happening to me and what can I do to overcome the recent reactions of the legs and toes