L-Tryptophan has helped me out a few times comming down from coke, I had to take a massive dose, but man if any of you know what a coke comedown is like for someone with an anxiety problem, you'll totally understand my desperation. It worked well enough, but I wouldnt ever make plans to use that to come down with.
A tolerance eh? I was under the impression it was a supplement and to be taken everyday for a few weeks to get your serotonin levels straightened out? The people at my health food store say people make the mistake of stopping taking it after a few days because of whatever reason, when it should take atleast 2 or 3 weeks of constant use to notice any real effects. But who knows, so far ive only been on it about 5 or 6 days and I love it, been takin some amino acids and zinc as well as some kidney and liver enzymez and some other things as well.
The fda is pushing to have most of these things made illegal, one of which being pushed through right now is a law banning certain forms of B6. So make sure you watch to see what bans are comming so you dont get caught off guard.