I was just wondering if anyone knows if Vytorin can have an effect on blood glucose levels. I am a diet controlled diabetic and was taking Vytorin for about a year and just quit taking it about a week ago because of different side effects that I had read about. My cholesterol was going way done, but decided to stop taking the drug because of muscle twitching and muscle cramps. Does anyone know if Vytorin has an effect on Blood Glucose levels because I am noticing lower numbers now that I have stopped. Is it just coincidence?