Sample size of 1 here, but just hear me out. Probiotics are a cheap and low-risk. If you have any general inflammation type issues that don't seem to have a cause, it might be worthwhile to just try probiotics. My Dr. told me to try them for a digestive issue - and they sort of helped that. But a handful of other things unexpectedly improved. Acid reflux went from really bad to barely noticeable, and my skin really c…
Not entirely risk-free, but the side effects of a negative reaction don’t last too long at least.
I felt notably worse for about a week after trying one of the mainstream probiotic brands with strange brain fog I couldn’t shake. This effect was repeatable and I could start the malaise again by resuming the probiotic. The same effect didn’t happen with another antibiotic with different strains.
Probiotics could be worth trying, but you have to go in with the understanding that the possible outcomes are more than just “no effect” and “improved health”. Worsening is also a real possibility.