13mongoose
1/2 cup worked for me. I did 1/2 cup of olive oil, and 1/2 cup of grapefruit juice and I actually LIKED the taste. I also took 2 tablespoons of barefoot's dewormer separately. I've done 3 flushes and got a bunch of stones out and I plan on doing some more once I'm done with my juice fast (on day 5 now). Each time I did the flush I never expelled any oil. I assume my body absorbed it and it was needed. If I remember correctly barefoot said that consuming olive oil or some type of plant fat every day keeps the liver stone-free permanently. If the diet doesn't have a decent amount of plant oils then the stones will return.