Opioids are a drug that bind with your opioid receptors in your brain and nervous system.
Common Opioids
Some Common opioids used around the world are:
Morphine
Oxycodone
Hydrocodone
Fentanyl
Heroin
Methamphetamine ("Meth")
Cocaine ("Coke")
MDMA ("Ecstasy" or "Molly")