I am Seth Colchester, an Irish-born entrepreneur based in Catalonia, Spain. Father, founder, and a firm believer that transparency builds trust.

Building Transparency in Functional Mushrooms

I founded Mycogenius to bring genuinely effective functional mushroom supplements to the European market. Every product is backed by third-party lab testing, full-spectrum extracts, and clear labeling. No proprietary blends, no filler claims — just honest supplementation that people can trust.

Quality You Can Verify

Every Mycogenius product ships with a Certificate of Analysis. Our Lion’s Mane, Cordyceps, and Reishi extracts are EU Organic certified, with standardised beta-glucan content verified by independent labs. I built this brand on the principle that customers deserve to know exactly what they are taking.

What Drives Me

When I’m not building Mycogenius, you’ll find me trail running in the Catalan mountains, cooking for my family, or reading about the latest in mycology research. Being a father has shaped how I think about quality — I only sell products I’d give to my own kids.

Let’s Connect

Visit sethcolchester.com to learn more about my work, or find me on LinkedIn and X.