So far it has worked well for Colitis and IBS which are similar to Crohn's. I thought their was some success with Crohn's but now that I look I'm not 100% sure. If not check out the link below about the Beck Protocol.
One drop per day. Then increase by one drop until you don't feel well. Then Pulse or cut back. You also need to salt flush, take vitamin C and Selenomethionine for companion nutrients. Helps removes bromine, mercury and lead.