Metformin is a common diabetes medication. I was prescribed Metformin when I first was diagnosed with diabetes. Metformin is a cheap medication, available as a generic, and it works very well for many people with Type 2 Diabetes.
For people with LADA Diabetes, Metformin may work initially to lower blood glucose levels, but as LADA progresses, the body makes less insulin, and treatment with insulin is necessary.
When I was first diagnosed, I was treated like someone with Type 2 Diabetes. I was misdiagnosed. This is common for people with LADA. You can read my LADA Diabetes story here.
The point of this post is to tell you that YES metformin CAN cause low blood glucose (hypoglycemia). I definitely had it happen to me. Yes, it was often in combination with exercise.