Vitamin B12, also known as cobalamin, assists the production of healthy red blood cells in our body
You may find you can get them for less if you buy a box at a time - often $300 to $400 - and $25 to $50 a shot
Since its primarily found in animal products, those following a vegan or vegetarian lifestyle must find alternative sources
Without enough B12, the body may struggle to produce enough energy to sustain normal bodily functions, leading to tiredness and lethargy during the day and difficulty sleeping at night
The procedure is done under general anaesthetic , usually through keyhole surgery , and most patients stay in hospital for 1 to 3 days
While supplementing with injections is considered safe in most cases, heres what you should know before you try it