
I bought Activia by default. The grocery store was out of my usual Stonyfield organic yogurt so I picked up a quart of Activia.
Next day...one emergency squat in the woods for an episode of explosive diarrhea.
Then 3 days of constipation.
Then 3 more days of pushing way to hard for very little results.
I'm back to my usual yogurt now and things are getting better.
Consider this a public service announcement.
Some other people have had similar results.