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Why are sugar levels not controlled with insulin?

The following is an actual conversation between an iCliniq user and a doctor that has been reviewed and published as a Premium Q&A.

Medically reviewed by

Dr. K. Shobana

Published At April 28, 2017
Reviewed AtMay 17, 2024

Patient's Query

Hi doctor,

My 77 year old mother, who weighs 253 pounds is suffering from diabetes mellitus since last 6 to 8 years. Her fasting sugar level is 180 mg/dL and postprandial is 250 mg/dL. She is taking Insulin from the past 3 to 4 years, Humalog 50/50 (twice a day 40 units). And her HbA1c is also high. She also takes Jentin Met, and other BP medications.


Welcome to icliniq.com.

Weight reduction is very important in diabetes. Maintain a strict diet and walk daily to reduce weight. I suggest changing tablet Jentin Met (combination of Sitagliptin and Metformin) to tablet Galvus Met (combination of Vildagliptin and Metformin). Continue with Insulin. Consult your doctor, and try taking tablet Galvus Met 50/500 in the morning after food and tablet Glyciphage (Metformin) 500 in the night after dinner.

Patient's Query

Hi doctor,

Thank you very much for your quick reply. Should we change the Insulin type as well? I think the Insulin is not working as it should. Without taking Insulin, the sugar level is almost the same.


Welcome back to icliniq.com.

Instead of Humalog, I suggest you try injection Humulin Insulin R 15 units, before breakfast and before lunch and injection Humulin Insulin 30/70 15 units, before dinner along with oral medication. Consult your specialist doctor, discuss with him or her and start taking the medicines after their consent.

Same symptoms don't mean you have the same problem. Consult a doctor now!

Dr. Ankush Dhaniram Gupta
Dr. Ankush Dhaniram Gupta


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