I also heard that illicit use of drugs to increase serotonin(or any of the key neurotransmitters) is like playing Russian roulette.
A very bad neurological effect can occur. In the street, and with regards to cocaine, it's called the "cocaine blues"
What this means is that over-stimulation of the release of neurotransmitters by use of illicit drugs can easily cause a "depletion syndrome"
In short, what this means is that using a powerful, illicit drug to "feel good" usually only increases the release of key neurotransmitter chemicals. The drug DOES NOT produce them.
Thus, what happens is eventual "depletion"
This can lead to mild-severe, temporary or clinically significant depression until renormalization occurs(day's, weeks, months) while totally absent from the illicit drug and special nutritional needs applied.
Edited by pallidin, 17 April 2010 - 08:47 PM.