b12 injection seattle Vitamin B-12 Injectable for Horses, Dogs and Cats — Jeffers B12 Injections in Rogers, Arkansas

Individuals With Malabsorption Conditions Certain medical conditions and medications can interfere with B12 absorption, including: Pernicious anemia (an autoimmune condition that impairs intrinsic factor production necessary for B12 absorption)[12]

NNMT inhibitors may be used with one or more chemical entities (e.g., nicotinamide riboside, nicotinamide mononucleotide) that increase intracellular NAD+ levels, to produce synergistic or additive effects to provide muscular therapy

These injections are given into the muscle and help treat or prevent megaloblastic anemia and pernicious anemia

Coeliac UK have a good helpline which I think non members can use

Their bodies naturally slow down with age, and they might have other health issues