Probiotic supplements may do the opposite of boosting your gut health.

[Warpy]

3. They also lighten your wallet considerably

If you're taking antibiotics and lower GI distress becomes a problem, eating yogurt with live cultures generally helps a bit, it seemed to help a great deal when I was taking a long term dose for Lyme disease. It also tastes good, boots your calcium and gives you protein.

We're in the infancy of understanding any of what goes on in our guts, from the bacteria which are beneficial, and what role the whole business plays in a lot of illness remote from our GI systems.

I've shied away from this stuff because we don't understand what's going on and one size never fits all, in any case.

This is an older article but it is a great overview: https://www.bbc.com/future/article/20190121-what-we-do-and-dont-know-about-gut-health