Back after a bit of a break, after trying out 500mg/day metformin for a week. On a good day, it's knocking 0.5 mmol/L of my Libre average, and on a not so good day, that's more like 0.2. In a Tesco 'every little helps' way, that's all good. Ultimately, it's not worth the risks and side effects I'm already getting from it, including one that's been instrumental in me not knowing whether I'm still in a relationship right now.
My figures are acceptable to the diabetes nurse without metformin, admittedly from a perspective that accepts this as a degenerative condition. I was projecting a pre-diabetic or maybe even non-diabetic HbA1c without any medication whatsoever. I felt metformin was worth a try to see if it could significantly reduce my averages while having acceptable side effects. What I've ended up with is minimal change and unacceptable side effects.
It seems the (undocumented in the patient literature) feature of metformin in lowering testosterone (I'm a non-op trans woman for those who haven't figured it out or read my profile, so we're talking male biology) is, for me, the robbing of Peter necessary to pay Paul for what's probably a marginal chance of keeping the sensation in my feet for a few years longer. It's not worth it, especially when it has my girlfriend walking out of the door because, while I tell her she still excites me, my body keeps saying the opposite.
I need to change my sig again, I suppose.