symptoms of too much vitamin b12 injection Side Effects Too Much Vitamin B12: Risks,

The route of administration significantly impacts treatment speed

[2] Patients should contact their GP if they experience: Side effects from B12 injections (though these are rare and usually mild) Difficulty attending scheduled injection appointments, as missed doses may lead to symptom recurrence New symptoms developing during treatment Concerns about treatment effectiveness or duration Changes in other medications that might affect B12 absorption Suspected adverse reactions to B12 treatment can be reported through the MHRA Yellow Card scheme (yellowcard.mhra.gov.uk)

With the rest of the B vitamins, B12 helps by converting what we eat into glucose, our body relies strongly for energy

As individuals age, the ability of the body to absorb B12 will diminish