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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.

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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!

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Biggest savings EVER!

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#1 Coffee on Amazon

UP TO $99 IN FREE GIFTS!

+FREE SHIPPING

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"This is the best-tasting mushroom coffee that we’ve reviewed – with just a touch of nuttiness and earthiness."

Four Sigmatic Focus Ground Coffee
Illustration of a stethoscope with a yellow diaphragm and black outline.

Stress Support

A yellow award ribbon with two tails.

Focus

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Energy

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Immune Support

9 in 10 Four Sigmatic Buyers Say Our Ingredients Work Better Than Traditional Coffee.

Three types of mushrooms: reishi, chaga, and lion's mane on a white background.

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.

Three types of mushrooms: reishi, chaga, and lion's mane on a white background.

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
Illustration of a stethoscope with a yellow diaphragm and black outline.

Stress Support

A yellow award ribbon with two tails.

Focus

Simple icon of an American flag in black and yellow colors.

Energy

Simple icon of an American flag in black and yellow colors.

Immune Support

Silver coffee bag surrounded by mushrooms and dark rocks.

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FAQs

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