Products may degrade faster or slower depending on exact formulation, storage conditions, and pH of the diluent used
Documented effects of refrigerated vs room-temperature post-puncture storage (community sources): The refrigeration practice does not extend the window past 28 days
Moreover, dosage accuracy is crucial, as there is a possibility that symptoms such as fatigue or weakness could worsen due to underdosing in people receiving the injections
Kotzakioulafi, A
Overview Vitamin B12, also known as cobalamin, is an essential vitamin that plays a key role in the normal functioning of the brain, nerves, blood cells, and DNA
Second, there is no long-term human dosing data, so nobody can tell you what a year of use does