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Stores can change or end offers at any time, so we can't guarantee every code will work. Updated Nov 13, 2026.
5 new codes and deals in the last 12 months.
Dec 2025: 0, Jan 2026: 0, Feb 2026: 0, Mar 2026: 0, Apr 2026: 0, May 2026: 0, Jun 2026: 0, Jul 2026: 0, Aug 2026: 3, Sep 2026: 0, Oct 2026: 1, Nov 2026: 1
Barnies CoffeeUp to 25% Off25% Off Barnies Coffee SitewideSee 3 offers
Coffee BrosUp to 15% Off15% Off Coffee Bros Select ItemsSee 3 offers
Invader CoffeeUp to 15% Off15% Off Invader Coffee OrderSee 3 offers
Sail Away CoffeeUp to 20% Off10% Off Sail Away Coffee SitewideSee 3 offers
Four Sigmatic Organic Focus Mushroom Ground Coffee | Dark Roast, Organic Coffee with Lion's Mane & Chaga Mushroom for Mental Clarity & Energy Support | 12oz Bag
$16.31 
Four Sigmatic Mushroom Coffee K Cups, Lions Mane & Yacon, Dark Roast, 24ct | Organic Mushroom Coffee K Cups with Lions Mane & Prebiotic Yacon for Focus, Energy & Gut Support, Single-Origin
$31.18
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Four Sigmatic Organic Gut Health Coffee, Turkey Tail, Medium Roast, 24ct | Organic Medium Roast Gut Health Coffee K Cups with Turkey Tail, Chaga & Probiotics for Focus, Energy & Gut Support
$20.00
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Four Sigmatic Focus Organic Lions Mane Coffee, Medium Roast, Ground, 12oz | Organic Medium Roast Lions Mane Coffee with Chaga Mushrooms for Focus, Energy & Gut Support, Single-Origin Arabica
$20.51
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Prices as of Nov 13, 9:29 PM and may change. As an Amazon Associate we earn from qualifying purchases.
Quick answers about saving at Four Sigmatic.
Yes. There is 1 working Four Sigmatic code on this page right now. The top offer is "15% Off Four Sigmatic Orders." Tap Show code to copy it.
Our top Four Sigmatic offer right now is "15% Off Four Sigmatic Orders."
Yes. Right now there is "Free Shipping Four Sigmatic Orders $49+." Check the offer details on the store's site for any minimum order.
In the last 12 months we added 5 new Four Sigmatic codes and deals. The newest was added on November 5, 2026.
Codes can have limits like a minimum order, certain products, first order only or an end date. Check the offer details on Four Sigmatic's site, make sure your cart qualifies, or try another code on this page. Stores can change or end offers without notice.
Most stores allow one promo code per order. If the checkout only takes one code, use the offer that saves you the most.
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Four Sigmatic makes mushroom coffee, plus creamers and other coffee alternatives. Orders over $49 ship free.
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