self administering b12 injections How to Give a B12

Contraindications/Precautions Cyanocobalamin is contraindicated in those with hypersensitivity to cobalt moiety or cobalamin molecule due to the risk of anaphylaxis (9)

But this isnt to say you need more AHK-Cu the older you get

Gastrointestinal protection: Consistent with its origins in gastric juice protein, BPC-157 has demonstrated protective and healing effects on gastrointestinal mucosa, including in models of inflammatory bowel disease, ulcers, and esophageal damage (5)

Conversely, a few studies reported high levels of vitamin B12 in the blood of patients with a worse COVID-19 outcome 48,49 potentially due to cytolysis leading to the release of intracellular B12 into the plasma and disrupted B12 clearance by the liver, which is often affected in these patients 50