b12 painless injection What are the benefits of injection? How to self-inject intramuscular vitamin

Obesity (vitamin D gets stored in fat tissue)

Everyones situation is different, but most people who have pernicious anemia take vitamin B12 supplements for the rest of their lives

Im thinking, if you go too long without B12, or for whatever reason that month through stress/illness whatever you use up your B12 more quickly, when you do have your injection that your potassium could drop as your body goes through a healing process, similar to when you first go on it

Injections For those with absorption issues, injections are a reliable option, especially for vitamin B12

Mood Evidence has linked depression with B-12 deficiency

The answer depends on why you are deficient