"no drug users"(you ARE drugs, what do you think you're neurotransmitters are, and why do you have an endogenous opioid system with opiate receptors/serotonin receptors? Why are you using that blanket statement?) Ummm, no.
My Point: I just wish people would research things for themselves and cross reference everything they find,
If you did the "research" you'd know that only synthetic endogenous opioids are drugs, naturally occurring peptides are chemicals but they are not drugs.
Hope that helps.