I'm not surprised you don't see taurine listed in that book. All the relevant research is quite recent. Here are a couple of Pubmed references:

http://www.ncbi.nlm.nih.gov/entrez/q..._uids=11746381

http://www.ncbi.nlm.nih.gov/entrez/q..._uids=15757628

http://www.ncbi.nlm.nih.gov/entrez/q..._uids=15240184

There is no real toxic issue with respect to taurine. You can over do it, as it is a neurotransmitter. But your body is totally designed to manage taurine. The problem is that there are a number of different ways your taurine synthesis mechanism can get screwed up, and they're all mediated by stress. It's one of those sucky vicious circle things.....you become more vulnerable to stress because you're stressed.....yada yada.

Now, those references may not mean much, or may leave you skeptical. But I can assure you, I have had some solid feedback from people who've tried taurine. It works. (most of the time) It also happens to be an excellent treatment for MSG exposure (Chinese food syndrome).

The evidence for niacinamide all comes from research done in Eastern Europe and the Soviet Union during the Cold War years.....late 70's and early 80's. They took a totally different approach to treating mental illness than did the Western world. They looked at augmenting natural processes, rather than finding novel drugs. They came up with niacinamide (and derivatives), whereas we came up with benzodiazepines.

Niacinamide acts at the GABA receptor. It also reduces allergenic response, and asthmatic reactions. I could provide references for those ideas, but as I said, they're all old and from the former Eastern Bloc and Soviet Union.

These aren't drugs. They're better thought of as food concentrates.

Lar