- sleep analysis feritin , vitamin d , magnesium , electrolytes , cortisol etc . so i want to try
metformin to lower insulin . can anyone tell me how much time does it take for metformin to effect the insulin level . and i dont see major sideeffect caused by metformin . what do u guys think . i was overweight , now i reduced my weight to the normal range with dieting and exercise still my insulin is high .