vitamin b12 injection for covid as an epidrug regulating peripheral blood biomarkers in long COVID-associated visuoconstructive deficit Vitamin B12 Injections – Benefits

Increase Energy Vitamin B12 helps produce red blood cells and prevents fatigue

I did some looking afterwards and it didn't seem to be that promising (difficulty with pain at the injection site, IIRC)

I have tried nasal and sublingual sprays, sublingual lozenges and patches

By delivering essential nutrients directly into the bloodstream, it bypasses gastrointestinal absorption, maximizing cellular uptake and enhancing tissue and organ function

Neurological issues brought on by pernicious anemia include memory and concentration issues, tingling and numbness in the hands and feet, and balance issues Pernicious anemia can lead to nerve damage Pernicious anemia can lead to heart failure Pernicious anemia can lead to an increased risk of infection and cancer Birth abnormalities and pregnancy difficulties including miscarriage can result from pernicious anemia

Pharmacokinetics Diclofenac: The absorption starts immediately after administration