Ill give you a really simple explanation , Not because I dont think you cant handle a comprehensive one , but because I havent slept in days and now im drunk . Basically when you take a drug , it either tells your brain to release more or less neuro transmitters . Neurotransmitters are like messangers , telling your body to do stuff , like release dopamine as a reward for eating . So , when you take Cycobenzaprine , it tells norepinephrine neurotransmitters not to leave the brain cells , and noreprinephrine is something that , in excess may make you salivate . Hope I answered your question . Happy thankes givings <| sep |> Lol , you kids call anything old vintage these days . That was my first amp , I bought it new and I called it a PoS . It had a crappy distortion channel and I wanted to rock out .