It was Seed. Feel free to read the studies they’ve done and draw your own conclusions on the effectiveness of their double capsule. I only have my own experience and that of my nephew that Seed has helped both of us recover from debilitating symptoms that were not addressed by fermented foods or other probiotics.
Stomach acid doesn’t kill all bacteria or pathogens. That’s how I got whipworm, roundworm, E. coli and giardia from food in India. Some bacteria may be more or less susceptible to the stomach environment. It looks like tests have shown some probiotics do tend to survive the stomach.