Ursolic Acid
Supplement
A compound suggested to the ITP, potentially related to bile acids and retinoid receptor activation, but Dr. Miller isn't certain about its rationale. It was mentioned as being not orally bioavailable in a human supplement context.
Mentioned in 2 videos
Videos Mentioning Ursolic Acid

#148 - Richard Miller, M.D., Ph.D.: The gold standard for testing longevity drugs: the ITP
Peter Attia MD
A compound suggested to the ITP, potentially related to bile acids and retinoid receptor activation, but Dr. Miller isn't certain about its rationale. It was mentioned as being not orally bioavailable in a human supplement context.

Patrick Arnold Interview (Full Episode) | The Tim Ferriss Show (Podcast)
Tim Ferriss
A natural chemical derived from Rosemary extract that Patrick Arnold developed as a spray; studies show it can turn off catabolic genes and turn on anabolic genes, increasing muscle-derived IGF-1 and brown fat.