VSL#3 seems to be one of the few probiotic products with enough bacteria in it to actually make a difference.

I seem to have used it with some success in calming down a bout of very nasty Rosacea that -might- have been SIBO related.

Purely anecdotal, one of the worst parts about Rosacea is that it literally changes with the wind (weather can have a huge effect), so tracking what works or not is really hard.