Long term treatment with metformin in patients with type 2 diabetes and risk of vitamin B-12 deficiency: randomised placebo controlled trial | The BMJ Health Hacker Australia > The Science > Ageing, Longevity and disease. > Long term treatment with metformin in patients with type 2 diabetes and risk of vitamin B-12 deficiency: randomised placebo controlled trial | The BMJ Posted on 25/09/2019 by Nathan https://www.bmj.com/content/340/bmj.c2181 Share this:TweetMore Click to share on Reddit (Opens in new window) Reddit Like this:Like Loading...