Dr. Mark Hyman
Physician and New York Times bestselling author
“Reishi, lion’s mane, chaga and cordyceps mushrooms contain powerful properties”
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100K+
5 - Star Reviews
#1
Mushroom Coffee Brand*
400M+
Cups Served
Feel Results In Just
7 Days
“Mushroom coffee can help you focus”
“I’m definitely a fan of the brand”
“An incredible blend of vegan protein”
“Four Sigmatic has taken the health world by storm”
Shop by Goal
What Sets Us Apart
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.
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.
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.
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
|
FOUR SIGMATIC
|
Regular Coffee | Other Mushroom Coffees | Coffee Alternatives | |
|---|---|---|---|---|
| USDA Organic | ||||
| Real 100% Arabica ☕ | Some | |||
| Only Real Fruiting Body 🍄 | Some | Some | ||
| Functional Dose Of 🍄 | Some | Some | ||
| Tested for Mold & Toxins | Some | Some | ||
| Tastes Like ☕ | Some | Some | ||
| Ground, Pods, Whole Bean - ☕ for Every Machine | Some | Some |
Trusted by Experts & Performers
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."
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."
Unlike Any Other
Mushroom
Company
9 in 10
buyers say it works
0%
of buyers plan on buying again
#1
in Consumer
Satisfaction
Satisfaction
ranked highest on taste
& efficacy
Why people switch to
Four Sigmatic?
- 1 Better Taste
- 2 Better Ingredients
- 3 Better Results*
Source: Mindsight Brand Health Study 2024
We're in the Coffee Aisle
