b12 injection hives Understanding and Managing Strange Rash/ Low B12 :
Description
Increased Energy Levels B-12 injections stand as a beacon of revitalization, renowned for their remarkable ability to combat fatigue and instill a renewed sense of energy and vitality

The key to a painless injection generally comes with the speed at which I pierce my skin, travel through the sub-derma, sub-cutaneous fat and into the muscle

doi: 10.1007/s40620-019-00618-x

They include megaloblastic anemia, lethargy, failure to thrive, microcephaly, brain abnormalities, developmental delay, intellectual deficit, seizures, and retinopathy

Trends in Endocrinology & Metabolism