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Functional mushrooms for daily life.
Powered by science. Perfected for focus, calm, gut health, and energy — without the crash.
on orders over $49
Back Guarantee
Hundreds of clinicians shared this with their patients without compensation.
Feel focused. Stay calm.
Live well—every day.
5 - star Reviews
Mushroom Coffee Brand*
Cups Served
Feel results in just
5 - star Reviews
Mushroom Coffee Brand*
Cups Served
Feel results in just
5 - star Reviews
Mushroom Coffee Brand*
Cups Served
Feel results in just
Bestsellers
Shop by Goal
A Higher standard for functional Mushrooms
For over a decade, we’ve been obsessed with doing mushrooms right — from how they’re grown and tested to how they taste in your cup.
Legacy and Expertise
Rooted in Mushroom Tradition
Founded in 2012 by a 13th-generation farmer, our work began long before mushrooms were trending. We’ve spent years studying, sourcing, and perfecting functional mushrooms to unlock real benefits — not hype.
Quality and Testing
Only the Essentials. Nothing Extra.
We use concentrated mushroom fruiting body extracts — never cheap mycelium fillers. Every product is third-party tested for purity, potency, and toxins, and made with organic ingredients you can trust.
Taste and Experience
Functional, Finally Delicious
Great benefits shouldn’t come with a tradeoff. Our products are crafted to taste smooth, rich, and familiar — so adding mushrooms to your daily routine feels effortless, not medicinal.
Four Sigmatic is a better cup
Trusted by Experts & Performers
Trusted
by experts
& performers
Joe Rogan
Comedian, Host of The Joe Rogan Experience
“I drink Four Sigmatic Lion’s Mane all the time... It actually tastes great, and it’s damn good for you. Their company is F***ing slick.”
Thomas DeLauer
Fitness Expert & Host of a Leading YouTube Channel
"It's next-level cognitive function. I'm clicked-on, focused, but also smooth and calm. You just have to feel it to see what I mean. Four Sigmatic is the OG and the real deal, don't fall for knock-off phonies."
Dr. Mark Hyman
Physician and New York Times bestselling author
“Reishi, lion’s mane, chaga and cordyceps mushrooms contain powerful properties”
Rich Roll
Ultra-Endurance Athlete, Host of The Rich Roll Podcast
"My morning go-to when I need to get up, go, and keep going."
Unlike any other Mushroom Company
9 in 10
buyers say it works
0%
of buyers plan on buying again
ranked highest on taste & efficacy
Why people switch to Four Sigmatic?
- Better Taste
- Better Ingredients
- Better Results*
We're in the Coffee Aisle
Find Four Sigmatic
in the Coffee Aisle!
Don't just take our word for it
Money-Back Guarantee
If you’re not satisfied within 60 days, we’ll give you a full refund—no questions asked.
