b12 injection versus oral Injections vs Pills: Richmond's Complete Guide B12 Injections vs Supplements: Which
Description
With Or Without Food

PMID 26185175

Merck Veterinary Manual

As the body ages, it will not develop enough hydrochloric acid to absorb Vitamin B12 present in foods through the digestive system

At gross necropsy, there were no treatment-related findings

I make sure patients are checking in with me regularly while taking it