I have a question about when I should take my Metformin. When I first was diagnosed the doctor gave me Metformin 500 ER which I took once a day. I recently had to change doctors because we moved. The new doctor said I should be taking Metformin twice a day and changed my prescription to take 500 mg twice a day. I have been taking it approx. 12 hrs. apart, but my neighbor, who is also diabetic, says I should be taking it with breakfast & dinner. What is correct?

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