PC, and the other phosphatides are beneficial for hepatic function, due to their capacity to reduce fatty liver (hepatic peliosis). The product you described is either simply Lecithin or an extract of lecithin. PC, if I remember correctly, is the main ingredient on Liv 52.
I found it on lifeextension.com, too and I think I'll order from this site, cos they have silybinin as well (the most potent milk thistle extract). We have to take care for our liver health.
Uh hem. "Post-Cycle" from www.proteinfactory.com contains Phos Choline,(from lecithin) CDG and Milk Thistle.
The amount of T removed from CDG is so miniscule it's irrelevant -- maybe a ng or two of total T from 500 mgs serving compared to tens times as much estrogen, making it an excellent trade off. Just add some avena to keep the T back up and you'll be fine.