lump in arm after b12 injection Managing Vaccine Site Reactions: Symptoms & Treatment Best Vitamin B12 Injection Sites:

If youre constantly feeling tired or dealing with brain fog, B12 shots can also provide the support you need to feel more energized and focused

Your liver uses choline to produce phosphatidylcholine, which is required for assembling VLDL particles the lipoproteins that transport fat out of the liver and into the bloodstream for use by other tissues

This inefficiency means you need to take significantly higher doses to achieve therapeutic levels in your blood, which can be both costly and ineffective

The body tolerates high doses of B12 but taking too much over time may cause many unexplained symptoms

Indian J Clin Biochemistry: IJCB

In summary, use the injections for as long as they are providing a clear benefit and need