Tag: B12 health benefits

According to the National Institutes of Health, while serum B12 levels over 250 pg/mL are often considered sufficient, experts increasingly focus on a higher range for optimal function. Understanding what is an optimal vitamin B12 level can help you move beyond merely avoiding deficiency to supporting your best neurological, metabolic, and energy health.

According to the National Institutes of Health, there is no established tolerable upper intake level (UL) for vitamin B12 due to its low potential for toxicity, yet many question if 5000 mcg of vitamin B12 is too much to take for daily supplementation. The answer depends heavily on your individual needs and health status.