Probiotic
Supplement
A multistrain probiotic is used by Dr. Hagstrom for her GI system, though acknowledged as debatable.
Mentioned in 2 videos
Videos Mentioning Probiotic

The Science of Eating for Health, Fat Loss & Lean Muscle | Dr. Layne Norton
Andrew Huberman
Supplements containing living microorganisms, generally found to be less effective for improving gut health than prebiotics (fiber) because they often fail to colonize or be sustained without appropriate fiber intake.

378 ‒ Women’s health & performance: how training, nutrition, & hormones interact across life stages
Peter Attia MD
A multistrain probiotic is used by Dr. Hagstrom for her GI system, though acknowledged as debatable.