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Is Metformin helpful in controlling diabetes?

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Patient's Query

Hello doctor,

I am a 35 year old female. I have been taking Metformin for controlling diabetes. What is its mechanism of action? What are the commonly encountered side effects? What are the other alternative medications or therapies for managing type 2 diabetes?

Thank you.

Hi,

Welcome to icliniq.com.

I understand your concern.

Metformin is a commonly prescribed medication for type 2 diabetes. Please find the mechanism of action, common side effects of Metformin, and alternative treatments:

1. Mechanism of action - Metformin primarily works in the following ways:

  1. Reducing hepatic glucose production: It inhibits gluconeogenesis (the production of glucose in the liver), which helps lower blood glucose levels.
  2. Improving insulin sensitivity: Metformin enhances the sensitivity of peripheral tissues (muscles and fat) to insulin, thereby improving glucose uptake and utilization.
  3. Decreasing intestinal glucose absorption: It may also reduce the absorption of glucose from the gastrointestinal tract.

2. Common side effects - The most commonly encountered side effects of Metformin include:

  1. Gastrointestinal disturbances: Such as diarrhea, nausea, vomiting, and abdominal discomfort.
  2. Lactic acidosis: Though rare, it is a serious side effect that requires immediate medical attention. Symptoms include unusual muscle pain, difficulty breathing, and dizziness.

3. Alternative medications and therapies: For managing type 2 diabetes, several alternatives to Metformin exist, depending on individual health needs and responses. These alternatives include other oral medications:

  1. Sulfonylureas (e.g., Gliclazide, Glimepiride) - Stimulate insulin secretion from the pancreas.
  2. DPP-4 inhibitors (e.g., Sitagliptin, Saxagliptin) - Increase insulin release and decrease glucagon secretion after meals.
  3. SGLT-2 inhibitors (e.g., Empagliflozin, Canagliflozin) - Increase glucose excretion in urine.

Injectable medications:

  1. GLP-1 receptor agonists (e.g., Liraglutide, Dulaglutide) - Stimulate insulin secretion, suppress glucagon release, slow gastric emptying, and promote satiety.
  2. Insulin therapy - For more advanced cases or when oral medications are insufficient.

4. Lifestyle modifications:

  1. Dietary Changes: Focus on a balanced diet with controlled carbohydrate intake.
  2. Exercise: Regular physical activity helps improve insulin sensitivity.
  3. Weight management: Losing excess weight can significantly improve blood glucose control.

Sometimes, combining different classes of medications (e.g., Metformin with a DPP-4 inhibitor or an SGLT-2 inhibitor) can provide better glycemic control than using a single agent alone. It is important to opt for optimal anti-diabetic regimen therapy considering your risk profile, as there are now drugs with evidence of protection to the heart, kidneys liver, etc. offered by certain classes of antidiabetic drugs. I would be happy to specifically suggest or prescribe medications that suit your preferences. I would need to know the following information to help you:

1. Medical history - Duration of T2D and other coexisting conditions like high blood pressure and cholesterol?

2. Body weight (BMI).

3. Do you experience frequent urinary tract infections?

4. Current or recent glucose test reports - HbA1c (glycated hemoglobin), FBS (fasting blood sugar), two-hour PPBS(post-prandial blood sugar).

5. Preferably - Kidney function test report (if you have one).

I hope this information helps you.

Revert with answers to the queries above.

Regards.

Medically reviewed byiCliniq medical review team

Published At August 23, 2024
Reviewed AtApril 17, 2025

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