does a b12 injection work straight away Vitamin shots: Uses, benefits, and side effects How Quickly Do B12 Shots
Description
link Ng FM, et al

Alcoholism & Drug Abuse Weekly

Peptides act as messengers (signalling molecules) that send signals to cells and tissues of the body to regulate their functions, such as releasing insulin, burning fat, or delaying digestion

Intravenous administration is not advised due to potential adverse effects
