Persistent blood sugar levels around 200 mg/dL despite metformin do not necessarily indicate drug failure, emphasising the need for diabetes assessment and possible treatment adjustments, according to experts.
If blood sugar remains around 200 mg/dL despite taking metformin, it does not automatically mean the drug has failed, according to Dr Pranav Ghody, a consultant endocrinologist and diabetologist at Wockhardt Hospitals in Mumbai Central. In response to a Quora question reported by The Indian Express, Ghody said the more likely explanation is that diabetes needs a fresh assessment and, possibly, stronger treatment.
Metformin works mainly by improving the body’s response to insulin and lowering the amount of glucose the liver releases. Mayo Clinic says the medicine is commonly used in type 2 diabetes for exactly those reasons, but it is not a cure and it does not always keep glucose in range on its own. That matters because type 2 diabetes is progressive: over time, the pancreas may make less insulin, and a single medicine may no longer be enough to control blood sugar, Ghody said.
A persistent reading near or above 200 mg/dL is also clinically significant. Mayo Clinic notes that a random blood sugar of 200 mg/dL or higher can point to diabetes, especially when symptoms such as excessive thirst or frequent urination are present, while other references including Merck Manual and the World Health Organisation’s India protocol say treatment should be adjusted when targets are not being met. In practice, that usually means reviewing adherence, diet, dose timing and the need for add-on medicines rather than simply staying on the same regimen indefinitely.
Disclaimer: This content is for informational purposes only and is not intended to be a substitute for professional medical judgment, advice, diagnosis, or treatment.
