Here you can see the recommended daily intake of vitamin B12 for adults: The requirements are particularly important for women at certain stages of life
Epithalon, a synthetic tetrapeptide based on pineal gland epithalamin, activates telomerase to maintain or extend telomeresthe protective caps on chromosomes that shorten with age
That creates a few important limitations
Heres an overview of the main benefits of vitamin B12, grouped into several key categories: Red blood cell formation : Vitamin B12 is necessary for the production and maintenance of healthy red blood cells, preventing megaloblastic anemia
VIP Peptide: Enhancing Gastrointestinal Function This blog discusses the role of Vasoactive Intestinal Peptide (VIP) in enhancing gastrointestinal function
Also - high levels of vitamin D can suppress Hepcidin, a hormone in the liver that regulates iron absorption, so iron remains in the blood - though what that means in relation to your problem - not sure