mr bill, sorry to hear about the stomach aches. The only thing I could find was a comment by Dr. Moyad. In his book, Promoting wellness for Prostate Cancer Patients, he has a section on supplements and said this about soy protein products: "Natural products (beans, powder, tofu) are heart healthy and may be more effective and healthy as compared to soy pills. As dosage is increased, so do gastrointestinal side effects."
Maybe drop the soy and see what happens.
Dx Feb. 2008, at age 71, PSA 9.1, G8, T1c
Eligard 3 mo. shot, Feb. 2008
daVinci surgery May 2008, G8(5+3), pT2c,N0,MX,R0
BCR 2 1/2 yrs after surgery
Salvage Radiation (IMRT), Dec. 2010 - Feb. 2011
PSA after SRT: 0.07 at 4 mo., 0.10 at 7 mo.