>Visibiome has OTC and rx-only probiotics products

It's worth pointing out that the actual biotic payload is exactly the same between the two products, only the dosage is different.

In other words, taking two packets of the regular unflavored powder should deliver the same payload as one packet of the rx-only "extra-strength" powder.

I suspect the only reason the higher strength product exists, and is rx-only, is so that it can be covered by health insurance for some people.