route of vitamin b12 injection Injections Vitamin B12 Injection For Cats:
Description
This SS linkage, together with the added N-terminal tyrosine, may support resistance to acidic gastric pH and proteolytic enzymes, thereby supporting oral bioavailability

Current Status of Knowledge A biochemical paradox Reference to the relation between high folate and low vitamin B-12 as a biochemical paradox was first made by the late Rene Malinow, who expressed concern at the time of the planning for the Vitamin Intervention for Stroke Prevention (VISP) Study, a randomized controlled trial that was designed to assess the effects of high-dose folic acid, vitamin B-12, and vitamin B-6 supplementation on recurrent stroke (36, 37)

PMID: 25038357
A compounded injection combining Methionine, Inositol, and Choline (lipotropics) with B12
Cost differences are significant