Communication could have been better but, the product works
For a deeper understanding, you can explore resources like the National Institutes of Health's information on B Vitamins: Functions and Uses in Medicine
That longer action is part of why maintenance injections can be spaced months apart rather than weeks
This is because our prescribing partners have chosen to place limitations on how often one can use the service as we recognise this service sits outside the scope of NHS guidelines
Most people are good candidates, but especially those who are vegetarian or vegan, take medications that deplete B12, have gut or absorption issues, or are dealing with chronic fatigue and brain fog
It is also most useful in the maintenance of the nervous system, assisting memory and learning