can you take b12 injections and tablets Vitamin vs tablets: which is better for you? Do You Need A Prescription

But once an older person has a good level of vitamin B12 in the body, its not clear that additional vitamin B12 will reduce the risk of problems like cancer or dementia

Injections are more effective for those with absorption issues or severe deficiency, but oral supplements work well for most people with mild deficiency and normal absorption

It also helps to form myelin sheath to protect nerve cells and conduct nerve impulses, and lowers homocysteine levels thereby reducing the risk of strokes or heart attacks

An intake of 2.4 micrograms a day is recommended for women and men, although this figure can change from one person to another