does vitamin b12 injection cause sleepiness Why do I feel worse after a injection? Benefits of Vitamin B12 Shots

Proceedings of the Nutrition Society 74

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This test evaluates the average size of your red blood cells, the higher your MCV is the bigger your red blood cells get (this isnt a good thing) and only a few things cause this problem (12), vitamin B12 deficiency, and folic acid deficiency being the most common

It's essential to note that while protocols exist, the exact measurement and frequency should align with the provider's specific instructions

Tests like vitamin B12 levels and blood counts help guide the dosing