If you're gassy and shitting mush:
1. Switch to a 100% Whey Isolate powder (expensive, but worth it)
2. Use Lactose reduced milk to mix the shakes with
If you're shitting bowling balls:
1. Add flax oil and Omega 3-6-9 oil to your diet (good for you anyways)
2. Add a little bit of metamucil or similar fiber product to each shake
OR eat 6 prunes with a big glass of water every day