how much b12 should you inject Vitamin Injections: What Need To Know B12 Shots in Friso, Sherman,

Supplementation is unnecessary if parenteral therapy repletes serum levels, but individual assessment is advised

Vegans, vegetarians, people over the age 50, anyone with stomach/bowel issues like chronic gastritis, leaky gut, IBS or celiac, and anyone who regularly takes medications such as Metformin, PPIs (used for GERD), H2 Receptor Antagonists (used for peptic ulcers), or anything that interferes with stomach acid production are actually at risk for vitamin B12 deficiency, and should supplement B12 regularly

Common research-planning structures use one subcutaneous dose per day with gradual titration

Epidemiological literature (LeRoith 2003

Billes SK, Cowley MA