Dietary Reference Intakes: Thiamin, Riboflavin, Niacin, Vitamin B-6, Vitamin B-12, Pantothenic Acid, Biotin, and Choline
She also finds it helpful for women who are trying to conceive, are pregnant or postpartum, or have PCOS because it supports mitochondrial function, reduces oxidative stress, and helps regulate metabolismall of which are especially helpful for women facing fertility challenges or mental burnout
Vitamin B12 injections may also benefit people with certain types of cancer, low levels of stomach acid, or alcohol withdrawal
There are accounts of potential toxicity or side effects that are not yet fully mapped, and some researchers have voiced public concerns with both safety and efficacy