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6 Ways to Inject B12 Wrong (And How to Avoid Them) Hitting a nerve

The caveat remains that human clinical trial data confirming these effects does not yet exist

Although dairy and meat products are usually considered good food sources of vitamin B12, the actual B12 levels contained in these products tend to vary greatly, as livestock is regularly supplemented with B12 injections to avoid deficiencies, making for a less than reliable (and natural!) source

A syringe that is too large for a small dose can be difficult to control, while a syringe that is too small for a large dose may require multiple injections, causing unnecessary discomfort