I was actually introduced to Zenpep in the hospital during one of my stays a couple years back. Had never heard of it before and was hesitant to use it, but tried it anyway. Worked wonders for me, fixed most of the problems I had been having with Creon. Made me feel "normal", or what I approximated "normal" to be when it came to digestion, solid stool, not a lot of gas, and very few stomach aches. I do feel the repercussions of my actions if I don't take it at a meal though, heh. I've been able to maintain my weight and gain while being on it as well. All of these tell me it is the right enzyme for me.