Metformin is a common medication used to treat type 2 diabetes. It is a first-line treatment for many people with diabetes, and it is generally considered to be safe and effective. However, there are some reasons why doctors may not prescribe metformin.

Kidney problems

Metformin can be harmful to people with kidney problems. If you have kidney disease, your doctor may not prescribe metformin for you.

Lactic acidosis

Metformin can cause a rare but serious condition called lactic acidosis. Lactic acidosis is a buildup of lactic acid in the blood. It can be life-threatening, and it is more likely to occur in people with kidney problems, liver problems, or heart failure.

Gastrointestinal side effects

Metformin can cause gastrointestinal side effects such as nausea, vomiting, and diarrhea. These side effects are usually mild and go away on their own, but they can be bothersome for some people.

If you are taking metformin and you experience any of the following side effects, you should stop taking the medication and contact your doctor immediately:

Nausea

Vomiting

Diarrhea

Abdominal pain

Shortness of breath

Confusion

Seizures

***If you have kidney problems, liver problems, or heart failure, you should talk to your doctor about whether metformin is safe for you.***

If you are taking metformin and you are pregnant or breastfeeding, you should talk to your doctor about whether it is safe for you to continue taking the medication.

Metformin is a safe and effective medication for many people with type 2 diabetes. However, there are some reasons why doctors may not prescribe metformin. If you are taking metformin, it is important to be aware of the potential side effects and to talk to your doctor if you have any concerns.