feeling depressed after b12 injection What You Need to Know About Vitamin Feeling worse after B12 Injection:

Nothing I've read or the neurologist I saw read has convinced me oral b12 works as well for most people with PA or another absorbtion problem

Actually, in the 1950s, many people with a diagnosis of pernicious anaemia were treated with high doses of folate, as B12 injections were not yet available

Nijhof IS, Casneuf T, van Velzen J, van Kessel B, Axel AE, Syed K, et al

We have, today, written to all Chief Medical Officers in the UK suggesting that they might want to consider evaluating the B12 status of patients with Long COVID

Hydroxocobalamin is converted into its active forms, methylcobalamin and adenosylcobalamin, in the body

It is excreted through kidneys in urine and the elimination half-life is relatively short