side effects after vitamin b12 injection Feeling worse Injection: Answering concerns B12 Shots — Why Are
Description
Histology in rats Rats were anesthetized with an overdose of sodium pentobarbital (150 mg/kg), then perfused intracardially with PBS 1x and paraformaldehyde at 4%

Interrelation of hyperhomocyst(e)inemia, factor V Leiden, and risk of future venous thromboembolism

Pros of Injections Bypasses the Digestive System: Because the vitamin is injected directly into the bloodstream, it bypasses any absorption issues in the stomach or intestines

Having said that I used to sometimes think those injections would work better than some that had been sitting out longer, or maybe it was purely coincidence
