The Effects of Heroin on the Nervous System

If someone is a drug abuser of heroin, they're normally going to take it intravenously. Once it's across the blood, brain barrier, what happens is that it binds to this opioid receptor. This receptor is normally acted on by your own hormones and neurotransmitters. It causes pain relief, sedation, reduction in anxiety,. feelings of euphoria, and also this sense of detachment.