Its the pure, stable, powdered form of the compound before its brought back into a liquid solution through reconstitution
Health Benefits of B12 Vitamin Shots B12 shots have many benefits for your health
15 LiQ.CuiM.YangF.LiN.JiangB.YuZ.et al (2017)
Supplementation with olive oil (four tablespoons per day) or mixed nuts (approximately one ounce of walnuts, hazelnuts, and almonds per day) for about five years resulted in a significant 30 percent reduction in the risk of major cardiovascular events (heart attack, stroke, and cardiovascular death)
These methods were described in Albrecht et al
Lead in Protein Supplements & Shakes Just before this interview, my husband saw a news segment about protein powders with high levels of lead