where can i find a list of trustworthy supplement companies?

Two places to start are Thorne and Momentous; Athletic Greens (now AG1) is another named option.

• 1. Thorne: Huberman described Thorne as having stringent quality standards and accurate amounts, and noted its partnerships with the Mayo Clinic and major sports teams. He pointed listeners to thorne.com/u/Huberman to see the supplements he takes. 1
• 2. Athletic Greens (AG1): This is a specific all-in-one vitamin, mineral, and probiotic drink—not a list of companies. 2
• Momentous: The podcast’s supplement catalog is at livemomentous.com/Huberman; Huberman described the company’s supplements as high quality and said the site gathers supplements discussed on the show. 3