Lecithin will help dissolve stones as like dissolves like, but this forum protocol is geared to the terminal. We don't have time to use lecithin and dissolve stones before our livers shut down, as a general rule.
The Ultraphos is what we use to allow the bile duct to expand enough so anything can pass through it without getting caught. Ultralifeinc.com is a bit cheaper than Phosfood. That's also the same as Phosfood you can get from any chiropractor.

After the program is completed, you can use lecithin so no more stones form, but we also stay on maintenence of a dewormer so that won't happen.

It's also important if you are following the NHP protocol to add the Schulze detox tea to the regimen to keep the blood cleaned out as you go along.