I take Janumet 1,000mg twice a day, and my blood sugar reading is still high?

Janumet (metformin and sitagliptin) is an oral diabetes medicine that helps control blood sugar levels. By adding glyburide, which is also a medicine used to treat diabetes, you may have a better control of your blood sugars

Metformin works by decreasing glucose (sugar) production in the liver and decreasing absorption of glucose by the intestines.

Sitagliptin works by regulating the levels of insulin your body produces after eating.
Janumet is for people with type 2 diabetes who do not use daily insulin injections. It is used along with diet and exercise. Janumet is not for treating type 1 diabetes.

Glyburide is in a class of drugs called sulfonylureas. It is used to help control blood sugar levels. It is used to treat type 2 diabetes along with diet, exercise, and insulin therapy, if necessary.

http://www.drugs.com/janumet.html

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http://www.drugs.com/glyburide.html

More information on diabetes treatment can be found in the link below:

http://www.drugs.com/diabetes-treatment.html

Hope you find this helpful.