vitamin b12 tab or injections What Are Injections? And Are They Safe? are b12 tablets as good

For example, while bone health may benefit from a vitamin D level of only 20 ng/ml (50 nmol/L), the immune system may require a much higher level of at least 50 ng/ml (125 nmol/L)

Vitamin B12 is essential for many bodily functions, and a deficiency can lead to a range of symptoms, some of which can be quite severe if left untreated

However, there is no evidence of benefit if people without a deficiency take extra B vitamins

One concern is that, if pre-cancerous cells are already present, very high availability of growth-supporting nutrients such as B12 could, in theory, support their growth too

Hydroxocobalamin is therefore the standard for vitamin B12 injections in many countries