vitamin b12 injection marietta Vitamin B-12 Injectable for Horses, Dogs and Cats — Jeffers Vitamin B-12 3000 mcg Injection,
Description
This allows the body time to respond to the injection and ensures any mild side effects have settled before travelling
Also, it is one of the most difficult vitamins to absorb, and it requires normal function of the stomach, pancreas and small intestine

Faster Results Most patients feel effects within 3060 minutes, versus hours or days with oral supplements

Lindenbaum J, Healton EB, Savage DG, et al

Persistent or severe symptoms suggest dose reduction or potential sensitivity