A<unk>  (NAS) is a chemical synthesized by neurons that affects the actions of other neurons or muscle cells.<unk> s include neurotransmitters, neurohormones, and neuromodulators. Neurotransmitters work only between adjacent neurons through synapses. Neurohormones are released into the blood and work at a distance. Some<unk> s act as both transmitters and as hormones.
Natural neuroactive substance
Serotonin releasing agent
Endogenous agonist
Performance-enhancing substance
Corrosive substance
Serotonin–norepinephrine releasing agent
Serotonin–dopamine releasing agent
Norepinephrine–dopamine releasing agent