Low blood sugar. Metformin does not usually cause low blood sugar (known as hypoglycaemia, or “hypos”) when taken on its own. But hypos can happen when you take metformin with other diabetes medicines, such as insulin or gliclazide.
Can metformin cause your blood sugar to drop too low?
Less common side effects
In some people, metformin causes blood glucose levels to drop too low, and the medical term for this is hypoglycemia. Hypoglycemia is more likely to occur if a person is taking insulin as well as metformin.
How much does blood sugar drop with metformin?
The average reductions in fasting blood glucose levels and hemoglobin A1c while on metformin are approximately 44 to 53 mg/dL (2.4-2.9 mmol/L) and 1.4-2%, respectively.
Can metformin mess with blood sugar?
But it can also increase your risk of having low blood sugar (hypoglycemia). While high blood sugar is dangerous, low blood sugar be dangerous, too. Since metformin does not increase insulin production, it does not significantly increase your risk of low blood sugar when taken on its own.
How do you know if metformin is working?
Metformin does not instantly reduce blood sugar levels. The effects are usually noticeable within 48 hours of taking the medication, and the most significant effects take 4–5 days to occur. However, the timing depends on the person’s dosage.
What are the most common side effects of metformin?
The most common side effects of metformin include:
- stomach pain.
- nausea or vomiting.
- weight loss.
What should you not eat when taking metformin?
Include carbohydrates that come from vegetables, fruits, and whole grains. Be sure to monitor your carbohydrate intake, as this will directly affect your blood sugar. Avoid food that’s high in saturated and trans fats. Instead, consume fats from fish, nuts, and olive oil.
What are the long term effects of taking metformin?
The medication can cause more serious side effects, though these are rare. The most serious of these is lactic acidosis, a condition caused by buildup of lactic acid in the blood. This can occur if too much metformin accumulates in the blood due to chronic or acute (e.g. dehydration) kidney problems.
Do I need to check blood sugar while taking metformin?
To work properly, the amount of metformin you take must be balanced against the amount and type of food you eat and the amount of exercise you do. If you change your diet or exercise, you will want to test your blood sugar to find out if it is too low.
What should I eat while taking metformin?
Prepare whole foods, such fruits, vegetables, and grains. Limit your intake of processed foods. Eat a high-protein, low-carb, low-fat diet.
What happens if you take metformin and don’t need it?
Metformin can cause a life-threatening condition called lactic acidosis. People who have lactic acidosis have a buildup of a substance called lactic acid in their blood and shouldn’t take metformin. This condition is very dangerous and often fatal.
At what A1C should you start metformin?
Recent guidelines recommend considering use of metformin in patients with prediabetes (fasting plasma glucose 100-125 mg/dL, 2-hr post-load glucose 140-199 mg/dL, or A1C 5.7-6.4%), especially in those who are <60 years old, have a BMI >35 kg/m2, or have a history of gestational diabetes.
What is the benefit of taking metformin at night?
The administration of metformin, as glucophage retard, at bedtime instead of supper time may improve diabetes control by reducing morning hyperglycemia.
How often do you check your blood sugar with type 2 diabetes?
People with type 2 diabetes should take a blood sugar reading at least once a day. Some may need to test as frequently as seven times a day.