Just to provide an alternate anecdote, I take probiotics fairly regularly (one to three in sequence every 1-2 weeks, or whenever I get out of whack) and have only had neutral or positive results. The flora in the probiotic is really nothing that shouldn't already be in a healthy gut, although of course you do want to be very careful as it's clear that your gut micro-biome is very important to your overall health. Just another data point.
> The flora in the probiotic is really nothing that shouldn't already be in a healthy gut
Perhaps the important factor isn't which species are present, but their distribution or some other factor of which we are still ignorant. In any case, I'm glad you've seen positive results and I may try them again in the future with single-strain supplements once this ordeal is long behind me.
