vitamin b12 oral vs injection Injections Supplements: Which are more effective? b12 injection or oral Vitamin

The AAFP advises that injectable therapy leads to more rapid improvement and should be considered in patients with severe deficiency or severe neurologic symptoms (Langan RC, Goodbred AJ, 2017)

Your provider determines the schedule based on your labs and response

Moreover, it is very rare that any forms of vitamin B12 are found in plant-based foods, making a dietary supply of B12 difficult for vegans to obtain (see here: Vitamin B12 for Vegetarians and Vegans)

What Is the Best Way to Treat Vitamin B12 Deficiencies

They do not typically interfere with the injectable form itself

Our bodies cant make it, so we get it from food or supplements