B12 shots work fast but don’t last long. Most leaves your body within a day, though some is stored in the liver. Regular injections may be necessary to maintain steady levels, especially if you have ...

What happens if your body has too much vitamin B12? Read on to find out the dangerous side effects of having excessive levels ...

Vitamin B12 for weight loss: Does it work? Since the dawn of the Internet (and probably well before), there have been several solutions sold for weight management — including vitamins for weight loss.