💊 What Every Senior Should Know About Metformin (Diabetes Med)

🔍 What Does Metformin Do?

Metformin works by:

1. Decreasing glucose production in the liver
2. Improving insulin sensitivity
3. Helping muscles absorb and use glucose more efficiently

It doesn’t cause the pancreas to release insulin, which means it has a low risk of causing hypoglycemia (low blood sugar) when used alone.

💡 Clinical Pearls for Seniors

• Start Low and Go Slow
  • Seniors often start on a lower dose to minimize side effects like upset stomach or diarrhea.
  • Extended-release formulations may be easier on the stomach.
• Monitor Kidney Function
  • Metformin is cleared through the kidneys. As we age, kidney function naturally declines.
  • Annual kidney function tests (eGFR) are essential to avoid rare but serious side effects like lactic acidosis.
• Watch for Vitamin B12 Deficiency
  • Long-term use can reduce vitamin B12 absorption. This can lead to fatigue, memory changes, or numbness/tingling.
  • A B12 level check may be appropriate if you’re feeling unusually tired or weak.
• Be Alert to Gastrointestinal Side Effects
  • Diarrhea, nausea, and stomach upset are common in the beginning. These usually improve with time or dose adjustments.

🕐 When to Take Metformin?

• With meals! Taking metformin during or right after food helps minimize stomach upset.
• For twice-daily dosing, aim for breakfast and dinner.
• Extended-release metformin is usually taken once a day with the evening meal.

🥦 Lifestyle Factors That Affect Metformin Use

• Diet Matters
  • Metformin is most effective alongside a consistent carbohydrate intake and reduced consumption of sugary or processed foods.
  • Skipping meals or crash dieting can increase the risk of hypoglycemia—especially if on other diabetes meds.
• Hydration is Key
  • Dehydration can raise the risk of kidney issues while on metformin.
  • Seniors should aim for adequate fluid intake—unless otherwise instructed by a physician (such as in heart failure or dialysis).
• Limit Alcohol
  • Alcohol can increase the risk of lactic acidosis and low blood sugar. Avoid excessive alcohol use while on metformin.
• Activity Helps
  • Daily gentle movement or walking helps improve insulin sensitivity and makes metformin more effective.