vitamin b12 injection side effects anxiety palpitations jittery deficiency symptoms and diagnosis What Causes B12 Side Effects?

Roughly half of patients who experience one episode will experience another, and the risk increases sharply with each subsequent episode (Burcusa & Iacono, Clinical Psychology Review , 2007)

Dosage: For intramuscular or subcutaneous administration: Calves : 2-4 ml subcutaneous, in the first week after birth

Reduced food intake and body weight in mice treated with fatty acid synthase inhibitors

As I said, I was petrified of just attending dr appointments because of bad anxiety, so couldn't imagine myself being able to walk in, and be calm enough for an injection, but just kept hanging onto the thought that the lack of b12 could be the reason I've been so anxious and ill so just had to give it a try