PT - JOURNAL ARTICLE ED - , TI - Safety update: metformin and vitamin B<sub>12</sub> AID - 10.1136/dtb.2022.000039 DP - 2022 Sep 01 TA - Drug and Therapeutics Bulletin PG - 131--131 VI - 60 IP - 9 4099 - http://dtb.bmj.com/content/60/9/131.short 4100 - http://dtb.bmj.com/content/60/9/131.full SO - Drug Ther Bull2022 Sep 01; 60 AB - Overview of: Medicines and Healthcare products Regulatory Agency. Metformin and reduced vitamin B12 levels: new advice for monitoring patients at risk. Drug Safety Update 2022;15(11):2–5.