All Items 70% OFF 

Coffee you’ll crave. 
Protein that performs.

Powered by nature for lasting energy, sharper focus,
 and gut support.

SHOP COFFEE SHOP BESTSELLERS

Best Sellers

10 Days of Shrooms Kit 10 Days of Shrooms Kit
-70%
10 Days of Shrooms Kit
Regular price $420.00 Sale price$126.00
Mystery Ground Coffee Mystery Ground Coffee
-70%
Mystery Ground Coffee
Regular price $20.00 Sale price$6.00

100K+

5 - star Reviews

#1

Mushroom Coffee Brand*

500M+

Cups Served

Feel results in just

7 Days

Our Mushroom Essentials

FOUR SIG™ Bestsellers

Focus Ground Coffee - Dark Focus Ground Coffee - Dark
-70%
Vendor: foursigmaticFocus Ground Coffee - Dark
Regular price$20.00 - $120.00 Sale priceFrom $6.00
Original Mushroom Coffee™ Original Mushroom Coffee™
-70%
Vendor: foursigmaticOriginal Mushroom Coffee™
Regular price$50.00 - $200.00 Sale priceFrom $15.00
Plant-Based Protein – Vanilla Plant-Based Protein – Vanilla
-70%
Vendor: foursigmaticPlant-Based Protein – Vanilla
Regular price$50.00 - $300.00 Sale priceFrom $15.00
Calm Decaf Ground Coffee - Medium Calm Decaf Ground Coffee - Medium
-70%
Vendor: foursigmaticCalm Decaf Ground Coffee - Medium
Regular price$20.00 - $120.00 Sale priceFrom $6.00
Focus Creamer – Vanilla Focus Creamer – Vanilla
-70%
Vendor: foursigmaticFocus Creamer – Vanilla
Regular price$15.00 - $120.00 Sale priceFrom $4.50

Shop by Goal

Focus
91 items
Gut Health
91 items
Energy
91 items
Calm
91 items
Protein
4 items

ROOTED IN MUSHROOM TRADITION

Founded in 2012 by a 13th-generation farmer, our work began long beforemushrooms were trending. We've spent years studying, sourcing, and perfectingfunctional mushrooms to unlock real benefits - not hype.

ONLY THE ESSENTIALS. NOTHING EXTRA.

We use concentrated mushroom fruiting body extracts - never cheap myceliumfillers. Every product is third-party tested for purity, potency, and toxins, and madewith 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.

Unlike any other 
Mushroom
Company

9 in 10

buyers say it works

#1   in Consumer Satisfaction

ranked highest on taste &
efficacy

9 in 10

buyers say it works

Why people switch to Four
Sigmatic?

1. Better Taste

2. Better Ingredients

3. Better Results*

thousands of lives changed

Don't just take our word for it

Kinda changing my life...

"Love this coffee. Been telling everyone Iknow about it. Placebo or not, Ifeel lessanxious, less irritable, more willing to focuson work and complex tasks, tastes good."

Best coffee I've had in years

"P'm really loving my mushroom coffee. I'mthe only one that drinks coffee so I don't useit up all that fast. I even think it's helping mydigestive system."

Money-Back Guarantee

If you’re not satisfied within 60 days, we’ll give you a full refund—no questions asked.