1000mg b12 injection Vitamin Injection: Energy Boost and Anemia Treatment — Mountainside Medical It is used to treat or prevent vitamin B12 deficiency Vitamin B12 (Cyanocobalamin) 1000Mcg/ML
Description
It is the most common side effect by a wide margin, and it typically follows a predictable pattern

In certain cases, the symptoms go away on their own after a few weeks or months

Atherosclerosis (2012) 220(1):1029

Others may begin noticing improvements

Clinical trial safety data: In the Phase 2 trial, adverse events were comparable to placebo