I've read many on here using Cat's Claw, the "TOA FREE" Cat's Claw, aka Una De Gato.
Have y'all read this research on TOA FREE? It seems that there are only a couple of reports on TOA FREE, and that research was paid for by Marketers of a TOA FREE product. And in addition the TOA Free research conflicts 20 years of INDEPENDENT research suggesting that the WHOLE Cat's Claw is needed and the TOA does NOT inhibit effectiveness of Cat's Claw. In fact it may be that removing some of these alkaloids may itlef inhibit Cat's Claw's effectiveness. After all, the natives that were using it long before Westeners discovered it were using whole Cat's Claw effectively.
Here's a paper written on Cat's Claw, and it seems to me that whole Cat's Claw is what would be desired, not TOA Free.