Thanks Deleted User01.
If I might begin by addressing the first part of your post:
Most people who are trying to stop drinking alcohol are doing so because of alcoholism, not because they get hangovers. Kava as an alternative to alcohol solely for the purpose of avoiding hangovers would also probably be a good idea for obvious reasons (not drinking alcohol in the first place). I would suggest labeled non-Tudei Kavas to people who are avoiding hangovers, with the caveat that a Kava hangover and an alcohol hangover have almost nothing in common. I would also express to them that Kava as a stand-alone substitute for alcohol is probably not going to cut it and that they should seek social and personal support.
Also, I would never advocate for consuming the aerial parts of Piper methysticum, and never have. Even though aerial parts of the plant might effect people differently, they are undoubtedly toxic and poisonous. This is not the equivalent to Tudei - which has not been proven to be either unhealthy or poisonous.
Tudei and aerial parts of Piper methysticum are not equivalents. It would be false to lump them together.
My opinion on Tudei is simple: it is a great recreational Kava for people who like it and can tolerate it. Nobody should have the right to take away Tudei from people who want to drink it. There is no conclusive evidence that Tudei (or any) Kava is bad for your health. Kava bans are legal actions taken by nation states and would have occurred with our without Tudei. The Kava ban was associated with actual observed health problems resulting from tainted extracts, Kava with added chemicals, and other direct adulterations of the natural plant.
All that being said, I would love to see vendors label their Kavas as Tudei or Nobel. I think the best way to do this would be for vendors and the Kava community to have more direct interactions with the farmers themselves. My impression is that Kava farmers in Pacific Island nations cultivate many different kinds of Kava, and when it is bundled together for export there is a large amount of variety within a batch. Nonetheless, for logistical reasons vendors give Kava a general name like "Borugu," "Tanna," or "Pentecost." So when that Kava is tested, it only represents a margin of the batch. This is one of the reasons I don't believe that the True Kava tests are reliable, and that they are only effective when you have large scale commercial operations like Gourmet Hawaiian Kava. This relationship is further complicated because GHK receives direct endorsements from TK and they often group together in arguments. It has "CONFLICT OF INTEREST" written all over it, and has even led me to avoid GHK.
I couldn't be more clear than this, and I don't want to continue the Kava flame war on this discussion board. It is clear that people have strong opinions about this. I have chosen to reject the testing system because I have deep-rooted (no pun intended) experience in agribusiness, the agricultural economy of developing countries, and with Kava itself.
So yes, people who are sensitive to Kava should drink Kavas that are labeled "Noble" with the caveat that they still might have unwanted side effects. They should be informed if a Kava is stronger than other Kavas. But this should be the responsibility of vendors and not amateur scientists who are not pharmacists (even though they might feel that they are).
K