Yes, raw milk also gives him problems unfortunately. I have heard of some people being ok with raw milk, and he is definitely not one of them. He doesn't do well with yogurt either (I had to actually buy lactose free yogurt). We bought some lactase drops online, and have been using them in the raw milk, and he has been doing better. I tried using lactase treated milk to use yogurt, and it was ok. I was just wondering if I could also use lactase treated milk to make cheese, or if the lactose is something that the milk needs to use to make cheese? I was curious to know if anyone knew of something like a test strip (or any other method really) to measure the amount of lactose in products. Google gave me nothing, and I remembered how knowledgeable and helpful everyone is on this site! I kind of gave up making stuff when he started having problems, and would like to start again, I miss it!