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The #1 Coffee on Amazon—Now Bigger, Fresher, and More Affordable!
We’re Four Sigmatic—makers of the #1 best-selling mushroom coffee on Amazon. Why? Because our coffee does more than just wake you up. It’s crafted with organic mushrooms like Lion’s Mane and Chaga to help support focus, clarity, and immune health—without the jitters or crash.
Now, we’re making it even easier to get the daily brain boost you love. Our bulk bags deliver more of what you need:
✅ Bigger supply
✅ Fresher taste
✅ Better value per cup
Stock up once, stay sharp all month. It’s your favorite focus-enhancing coffee—now in a bag that works as hard as you do.
Limited stock alert! Our bulk bags are in high demand. As we work to keep up with orders, new orders may experience slight delays.
Exclusive Deal For New Customers!
Join 1,000,000+ who have upgraded their morning routine with Four Sigmatic!
Biggest savings EVER!
Free Shipping
#1 Coffee on Amazon
UP TO $99 IN FREE GIFTS!
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"This is the best-tasting mushroom coffee that we’ve reviewed – with just a touch of nuttiness and earthiness."
Stress Support
Focus
Energy
Immune Support
9 in 10 Four Sigmatic Buyers Say Our Ingredients Work Better Than Traditional Coffee.
Organic Lion's Mane Extract
This mushroom takes after its name with a fierce brain-powering boost to keep you sharp and energized
Log-Grown Fruiting Bodies
The "potent" part of the mushroom.
Fully organic, with no fillers, grains or carriers.
Organic Wildcrafted Chaga
Meet your ultimate immune system supporter. Packed with antioxidants to keep your body well.
Sustainably Sourced
Wildcrafted on birch trees, just as nature intended. No mycelium, fillers or grains here.
Mushroom Coffee is Now Loved By Millions!
94%
of buyers plan on buying again
9/10
buyers say it works
NO
Artificial Sweeteners
Source: Mindsight Brand Health Study 2024
It's focus made easy
Stress Support
Focus
Energy
Immune Support
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