- Aug 17, 2018
As I've already posted here, I've been taking metformin for prediabetes for over a month now. This drug is known to cause Vitamin B-12 deficiency in the long run, so I decided to buy some over-the-counter Vitamin B complex supplements yesterday. Soon after taking one tablet, I noticed that my mood was better, and when I exercised yesterday evening and today morning I noticed that I had much better stamina. Please note that Vitamin B-12 supplements will help with depression only if you're already low on B-12.