I recently went back on Metformin only to have to come back of it again a couple of weeks later after having very bad anxiety attacks. Has anybody else suffered anxiety attacks?
Yes, I've suffered from serious anxiety when on 2000mg of Metformin. The dose was halved due to it causing stomach issues, and my anxiety disappeared too. It took me a few weeks to spot the link.
It is a documented potential side effect of Metformin as are other mood swinging effects - much rarer than the well-known gastric issues but possible nonetheless.