I recently had a bottle of pills that became virtually inactive (i can tell from my bowel movements) after a few weeks, probably because they weren’t refrigerated. . . I probably wouldn’t have been able to get a lot of bacteria into my diet without pills, especially since I travel frequently for work. In addition, since I take thyroid pills every day, adding another pill is easy. I think pills are also clearly crucial to research efforts.
Good points. On recent trips (in America) I’ve found kombucha, yogurt, and kefir in the new locations, but it’s been time-consuming. Pills would have been easier.