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Dr. Andrew Rynne
MD
Dr. Andrew Rynne

Family Physician

Exp 50 years

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Taking Metformin, Feeling On The Edge Of Hypothyroidism. Dosage Too High?

After an HbA1c of 8.2 on 2 gm Metformin XR my GP put me on Galvumet 50 mg x 1000 mg twice daily - I started 4 weeks ago - I m now getting BSLs 4 hours after breakfast and lunch of 4.7 - 5.5 mmol/ml and 5.5 - 6.0 mmol/mL overnight - I feel that I m on the edge of a hypo much of the time - I won t have another HbA1c for at least 8 weeks (health fund restrictions) - is my dosage too high?
Mon, 8 Oct 2012
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Diabetologist,  's  Response
Hi there.

Thanks for the query.

The blood glucose levels which you are describing now are perfectly fine if you are less than 65 years of age. They are almost your pre-lunch and pre-afternoon snack time readings as you have taken the readings 4 hours post breakfast and post lunch. They are excellent and not at all in hypoglycemic range.
Secondly, Metformin is a beautiful medication for a person with type 2 diabetes. It has a beauty of bringing your blood glucose to normal levels, but it does not take sugar down to 'hypoglycemic range'- in most of the people. If you feel a bit hungry with sugars 4.7 to 6.0 then try eating carbs upto 15 to 20 gms and not more than that. But this is for sure isn't hypoglycemia and this kind of glucose control will lead you to longer, healthier life. After 8 weeks or so, you should certainly find HbA1c less than 7% and that's your target if you are less than 65 years!
Dosage is perfect and less than the maximum recommended, so your doctor has prescribed very safely for you. Just relax and follow good lifestyle with this medication, you will be fine!
All the best.
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Taking Metformin, Feeling On The Edge Of Hypothyroidism. Dosage Too High?

Hi there. Thanks for the query. The blood glucose levels which you are describing now are perfectly fine if you are less than 65 years of age. They are almost your pre-lunch and pre-afternoon snack time readings as you have taken the readings 4 hours post breakfast and post lunch. They are excellent and not at all in hypoglycemic range. Secondly, Metformin is a beautiful medication for a person with type 2 diabetes. It has a beauty of bringing your blood glucose to normal levels, but it does not take sugar down to hypoglycemic range - in most of the people. If you feel a bit hungry with sugars 4.7 to 6.0 then try eating carbs upto 15 to 20 gms and not more than that. But this is for sure isn t hypoglycemia and this kind of glucose control will lead you to longer, healthier life. After 8 weeks or so, you should certainly find HbA1c less than 7% and that s your target if you are less than 65 years! Dosage is perfect and less than the maximum recommended, so your doctor has prescribed very safely for you. Just relax and follow good lifestyle with this medication, you will be fine! All the best.