taking b12 injections during pregnancy are safe Are B12 Shots Safe? Royal Palm Beach Medical Group Vitamin B12 For Women: Health

According to UK product information for licensed B12 preparations, both oral and injectable forms have been used extensively in pregnant women without evidence of harm to the developing fetus when used at recommended doses

Ooh this is interesting

Glucagon-like peptide-1 (GLP-1) receptor agonists are a class of injectable medications primarily used to manage type 2 diabetes mellitus and, in some formulations, chronic weight management

Evid Based Complement Altern Med

Researchers in the 1940s were apparently following a valuable lead by showing that estrogen is not fully inactivated by the liver if there is a vitamin B deficiency