tryptophan was pulled from the market,because there was a contaminated batch of it produced by a company called Showa Denko. Before that occurence it was used by thousands of people for years. It is an essential amino acid

This product was placed on the market, and within a few months it caused the deaths of 37 people and caused 1500 more to be permanently disabled . It took months to discover that the poisoning was due to toxin present in the tryptophan produced using Showa Denko's genetically engineered bacteria.

If you can understand this section:


From the research that has been done (reviewed in ref. 1), these facts are clear: (a) Batches of tryptophan produced by only one company, Showa Denko, were toxic. (b) These batches of tryptophan contained the contaminant EBT and possibly other compounds that are highly toxic and give rise to EMS-like symptoms when fed to rats. (c) Showa Denko had used genetically engineered bacteria in the fermentation process by which the toxic batches of tryptophan had been produced. (d) Showa Denko had also cut corners in the purification procedure used in preparing most of the toxic batches of tryptophan, reducing the amount of activated charcoal used in filtering the tryptophan from 20 to 10 kilograms per batch.


As far as being a controlled substanc, I see it for sale on line and in health food stores all over. That would mean all these huge nutraceutical companies are breaking the law. I guess they just don;t know that Tryptothan is a prescription drug. What idiots and criminals. They must be liberals or anti-semites

Maybe they should get some lawyers to look into this or maybe they should call the pastry boy for verification