September 10, 2026 · 6 min read

3 Billion vs 10, 25 or 50 Billion CFU: Is More Actually Better?

Fifty billion is not automatically better than three billion, and strain-specific trial doses explain why. Published studies use different doses for different organisms and outcomes. The strain Bacillus subtilis DE111, for example, has been trialled at 1×109 and 5×109 CFU/day — one to five billion. A count ...