Hey thanks for mentioning custom probiotics cp-1. I have not even heard of that one. Have you tried it? What's your experience like. The thing is I have a big hypersensitivity reaction to casein in milk and most probiotics with a high bacteria count have casein in it. I purchased vsl# 3 last year which has about 450 billion in one little sachet. I took it and then realized that it has trace amounts of casein in it. I might try custom cp-1.