My husband is getting over a bout of pouchitis and doing great on flagyl (750 mg) and VSL3 sachets each 900 billion (2 a day). The VSL3 is very expensive but it is doing its job now. When this bout of pouchitis is passed, what do you recommend as a maintenance of VSL3 (without flagyl) - each sachet he has is 900 billion. I would like to know if he can take a VSL3 for one-two weeks every few months to maintain. Any advice appreciated. Oh and some sachets are only 450 billion, what do you think?