I want to ask for people's experience of Metformin , which I'm being advised to start on now my HbA1c is 5.3. I'm on a low-carb diet. I'm underweight for my height. I've been on T3 only for 12 years. This last year has been a hard one with Covid and shingles and tooth extractions making it harder to keep my thyroid steady.I'm afraid of the side effects of Metformin reducing my quality of life just as I'm feeling a bit less brain-fogged and fatigued.