b12 injection im or subq Cyanocobalamin – 1000 mcg/mL Best Vitamin B12 Injection Sites:

This means it's basically impossible to overdose on water-soluble vitamins

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

Not all B12 that you eat or take in supplements is absorbed and research indicates that to achieve a sufficient daily dose of B12, you should take at least five to 50 micrograms daily or 1,000 to 2,000 micrograms weekly (Del Bo et al., 2019

Without saliva, flavours do not dissolve properly, and taste buds do not receive accurate signals

& Benitah, S

[19] [21] The duration of therapy depends on the indication and patient response