You talking about adenochrome?
IIRC, Adrenochrome is more like a thrilling 'drug' that produces an incredible thrill for the child rapists and murderers.
The youth thing uses blood of babies and youth to be transfused into older folks--ostensibly lengthening their lives and enlivening their aging tissues and organs to some degree.
Some aged wealthy purportedly have youth around them for daily infusions. It is hard to say how abusive to how many youth such goings on are.
Adrenochrome is a more horrible sort of thing for a different purpose.