I just wrote on a different thread about this very subject -- VSL3 is so expensive. But my doctor said he thought it was worth the money because in this case he said you get what you pay for. I'd never heard of them so I know they're not spending much on marketing. That might be a good thing... Anyway, it's the only probiotics he said he could find that had been tested (to his particular standards) to contain good probiotics strains that were definitely alive. Personally, I wish I'd known about this simple product before I spent a lot more money on a bunch of supplements I'll never finish. In fact, I'll bet if all the people in this Candida Forum were to consolidate the half-used supplements they've purchased over the past few months (and years!) we could open a store the size of Amazon. Well...almost.......? :)