my A1c is now 5.1 post TRT ; it used to be 5-5--5.7 prior to TRT. Same like Vincent, I use metformin for longevity only. I don't take it all the time though. I only use it when I HAVE to eat carbs. The impact is very very noticeable. I don't feel so much crash after eating carbs.
Combining TRT with Metformin is very good for carb-sensitive people like me. In fact I can actually start eating carbs a little bit more these days without feeling the impact.
The T level is more dosage-dependent rather than Metformin causing any impact on T.
