Four Sigmatic Ground Mushroom Coffee Review

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By Ryan Brennan

Reviewed by Juliana Tamayo, MS, RDN - Last Updated

Four Sigmatic Ground Mushroom Coffee Review

If you’re an avid coffee lover, you’re likely on a consistent hunt to find your next favorite coffee blend. Maybe you’re looking for a coffee blend that can also add to your overall health? With so many options out there, such as Elevate Smart Coffee and It Works Keto Coffee, the opportunities are endless, and you can find coffee mixed with a wide range of different ingredients.

One trend that has finally started to make its way to the United States are functional mushrooms. No, these aren’t the type of mushrooms that will make you hallucinate, but they will provide some high-quality health benefits.

If you’re new to functional mushrooms or are just looking for a way to spice up your morning cup of joe, Four Sigmatic has you covered with a variety of coffee blends — including Ground Mushroom Coffee with Probiotics.

Don’t worry; we’ll break down everything you need to know about this product before consuming it. Strap yourself in because you’re about to have your mind blown with the amazing power of this coffee blend. Let’s dive in with our review of Four Sigmatic Ground Mushroom Coffee.

Four Sigmatic Ground Mushroom Coffee

What Is Four Sigmatic Ground Mushroom Coffee With Probiotics?

Ground Mushroom Coffee with Probiotics is a coffee blend offered by Four Sigmatic, a company that was founded on one basic principle — make functional mushrooms a household ingredient worldwide. Their products also include Four Sigmatic 10 Mushroom Blend and Four Sigmatic Mushroom Cacao Mix. While Four Sigmatic started in Finland, they have now built their headquarters in Los Angeles, CA for all of the United States to enjoy.

Four Sigmatic offers several different coffee blends outside of their Probiotic blend. They also offer a Lion’s Mane blend and Adaptogen blend. Each of them takes advantage of functional mushrooms, but they each provide different benefits.

Their Probiotics blend features two types of functional mushrooms (Chaga and Turkey Tail), probiotics, and prebiotics to give your stomach, immune system, and gastrointestinal (GI) tract the boost it needs in the morning.

Four Sigmatic Ground Mushroom Coffee And Coffee Press

To help you better understand the benefits of this coffee blend, you have to first understand the difference between probiotics and prebiotics, as well as their role in gut health. Then, you’ll have to familiarize yourself with the beautiful benefits of the Chaga and Turkey Tail mushrooms.

Let’s take a closer look at each of these factors.

Why Consume Functional Mushrooms?

Most people are under the impression that there’s one type of mushroom that’s found in the wild and used in cooking. Believe it or not, there are over 2,000 known species of mushrooms around the world, and there’s a good chance there are more to be discovered.

While that’s a lot of species, only 15 of them hold the title of functional mushroom, and it’s because they provide a mounding amount of support to the immune system. They’ll also provide other benefits, but those will depend on the certain species of mushroom we’re talking about.

In Ground Mushroom Coffee with Probiotics, Four Sigmatic takes advantage of the Chaga mushroom and the Turkey Tail mushroom. Let’s see what makes these two functional mushrooms so special:

  1. Chaga Mushroom – resembling the appearance of burnt charcoal, the Chaga mushroom isn’t the most pleasantly-looking mushroom. It’s packed with antioxidants, has anti-inflammatory properties, and can lower blood sugar and cholesterol.
  2. Turkey Tail Mushroom – this mushroom will actually contain probiotics itself, which is a large reason why it’s found in this coffee blend. Aside from that, it will also be packed with antioxidants and hold anti-inflammatory properties.

The combination of Chaga and Turkey Tail mushrooms will give your body all the immune-boosting help it needs. Your immune system is essential to overall daily health by fighting and regulating bacteria, viruses, infection, and much more in the body.

What Do Probiotics Do For The Body?

Probiotics, which shouldn’t be confused with prebiotics, are live microorganisms that live in the gut. They are a form of friendly and healthy bacteria that your body needs for an efficient immune system and a productive digestive system.

Contrary to popular belief, not all bacteria is bad for you. In fact, our bodies are full of bacteria every waking second of each day — both good and bad bacteria. Our bodies require a healthy balance of good and bad bacteria in order to function properly.

There are two main types of probiotics, Lactobacillus and Bifidobacterium. Lactobacillus is commonly found in yogurt and can help people struggling to digest lactose. Bifidobacterium is largely used to help ease the symptoms of IBS.

What Do Prebiotics Do For The Body?

Prebiotics work a bit differently than probiotics. Prebiotics aren’t going to provide the body with healthy bacteria. Instead, they will provide healthy bacteria with food and fuel so they can perform at maximum efficiency.

Prebiotics are special because they can’t be broken down in the digestive system. They will work their way through the gastrointestinal tract unharmed before arriving at the common gathering spots for healthy bacteria — the colon, for example.

Once the prebiotics meet up with their friends, the probiotics will break them down into nutrition. As a result, the probiotics can continue doing their job, only doing it better this time around.

Does Four Sigmatic Make Any Claims For Ground Mushroom Coffee?

Much like most of their other products, Four Sigmatic does an excellent job of informing their clients of what their Ground Mushroom Coffee with Probiotics contains. They’re also keen on focusing their marketing efforts on the benefits with scientific evidence supporting them.

With their Probiotics blend, their coffee is 100% vegan, organic, fair-trade certified, and contains zero grams of sugar. They claim their blend will taste a lot like the morning cup of joe you’re used to, but with a wide range of additional benefits due to the added functional mushrooms, probiotics, and prebiotics.

Four Sigmatic also claims they use heat-resistant probiotics, meaning those live microorganisms will be able to survive in your coffee no matter how hot it is. If you’re looking for a coffee blend that improves your gut health, immune system, and doesn’t lead to a crash in the middle of the afternoon, Ground Mushroom Coffee is the brew for you.

Four Sigmatic Ground Mushroom Coffee Ingredients

Now that we’ve received a brief overview of what to expect out of Ground Mushroom Coffee with Probiotics, it’s time to dive into the juicy details — the ingredients!

When it comes to supplements, the ingredients are where it counts. All those claims and guarantees might help you sell the product, but it won’t mean the consumer will like it once they purchase it. At the end of the day, the claims mean nothing unless the ingredients can back them up.

Four Sigmatic Mushroom Coffee tree

Let’s see what everyone is raving about when it comes to the ingredients in Four Sigmatic Ground Mushroom Coffee.

Organic And Fair-Trade Coffee

A coffee blend without coffee in it would be, well, not coffee. In Ground Mushroom Coffee with Probiotics, Four Sigmatic ensures they utilize fair-trade coffee. This might seem like a complex term, but it simply means the coffee was produced to fair-trade standards and kept to the highest quality.

Four Sigmatic uses coffee beans grown in Quetzaltenango, Guatemala, by passionate producers. They provide a medium roast coffee that comes out smooth and without a bitter aftertaste. Since this company was founded in Finland, you know they’ll be taking their coffee seriously.

Enjoy that sensational boost in the morning with this quality brew!

Organic Chaga Mushroom

We touched base on this functional mushroom briefly above, but let’s take a closer look at it. The Chaga mushroom was utilized as a coffee alternative during World War II in Finland, which is a large reason why it was added to this blend.

Four Sigmatic forages their Chaga mushrooms from birch trees before extracting them down into a powder.

The Chaga mushroom is best known for its antioxidant and anti-inflammatory properties. This is due to the formation of cytokines, which helps stimulate white blood cells. As you might know, white blood cells are essential to the immune system.

Outside of that, you can expect this powerful mushroom to help reduce blood sugar, lower cholesterol, and reduce insulin resistance. You’ll find 300mg of it in Ground Mushroom Coffee.

Organic Turkey Tail Mushroom

If you’ve seen a turkey trail, you’ll know where this functional mushroom gets its name. The Turkey Tail mushroom is widely known for its immune-boosting and medicinal properties. Of course, you can expect it to provide antioxidants and anti-inflammatory properties like most functional mushrooms.

In addition to that, Turkey Tail mushrooms provide both Krestin (PSK) and Polysaccharide Peptide (PSP). These two polysaccharides help stimulate your immune cells and reduce inflammation in the body.

If you thought that was all, think again. Turkey Tail mushrooms contain probiotics that help increase the amount of Bifidobacterium and Lactobacillus in your gut. They can also help reduce the amount of bad bacteria in your gut to maintain healthy levels in the body.

There’s truly a lot to love about this mushroom, and Ground Mushroom Coffee contains 200mg of it!

Organic Yacon Juice Powder

Yacon Juice Powder, which can also be found in a syrup, is a sweet root vegetable native to the Andes Mountains. It’s widely used as a sweetener due to its low sugar and calorie levels, which will help enhance the taste of your morning cup of joe and hide the taste of the mushrooms.

In addition to that, Yacon Juice Powder is known to provide the body with prebiotics. More specifically, it will increase the amount of fructooligosaccharides (FOS), which promotes the growth of healthy gut bacteria.

Lastly, it can aid in weight loss, lower glycemic levels in the body, and can also be found in chicory root.

Probiotic Bacillus Subtilis (DE111)

The final ingredient included in Ground Mushroom Coffee is DE111, a specific strain of Bacillus Subtilis. The name might be intimidating, but it’s a probiotic that will provide your body and gut with healthy bacteria.

One of the main reasons Four Sigmatic utilizes this probiotic is because the microorganisms are able to survive boiling water, as well as the acid in your stomach. This ensures those healthy bacteria reach it to their destination without dying out.

Four Sigmatic notes that each serving will provide 1 billion CFU, which is the unit used to measure bacteria.

Four Sigmatic Ground Mushroom Coffee Dosage, Packaging, And Pricing

Four Sigmatic keeps everything simple when it comes to the packaging of Ground Mushroom Coffee with Probiotics. It’ll come in your typical coffee blend bag, so there’s no confusion on what it is. The bottom half of the bag is brown, and the top half is green.

You won’t find a lot of claims and marketing tricks on the front of the bag. You’ll see the word “DEFEND” to pay tribute to the amazing benefits it provides. It’ll also show “Medium Roast” on the front.

You won’t find the exact dosages of Organic Yacon Juice Powder, but they do let you know there’s 1 billion CFU in DE111, 300mg of Chaga mushroom, and 200mg of Turkey Tail mushroom. As far as the nutrition facts go, each serving will provide 5 calories, 1 gram of carbs, and zero grams of fat, sodium, and protein.

Four Sigmatic Ground Mushroom Coffee Bags

Each bag contains 16 servings and can be purchased online for $40 per bag. They do also offer a subscribe and save option which will save you 20%, bringing the cost down to $32.

Four Sigmatic Ground Mushroom CoffeeSave up to 20% on Four Sigmatic Ground Mushroom CoffeeWe scour the web for the best deals on supplements. Want to get up to 20% off your Ground Mushroom Coffee order? Click the button below to get this deal!GET THE DEAL

Ground Mushroom Coffee Pros vs. Cons

If you’re still on the fence about whether Ground Mushroom Coffee with Probiotics is the right addition to your morning routine, hopefully we can help you make a decision with a list of pros and cons.

Overall, you’ll notice that this is a solid product. It has a few cons that might sway some consumers in a different direction, but you definitely won’t go wrong with quality and performance here.

Let’s take a look!

Four Sigmatic Mushroom Coffee Mixes


  • Chaga Mushroom supports the immune system and helps form cytokines
  • Turkey Tail Mushroom supports the immune system, provides probiotics, and polysaccharides
  • DE111 is a powerful probiotic supplement that delivers 1 billion CFU
  • Yacon Juice Powder provides healthy bacteria with prebiotics
  • Four Sigmatic utilizes fair-trade coffee from Guatemala
  • An owner that is passionate about functional mushrooms
  • Organic, Vegan, and zero grams of sugar
  • No mushroom taste, just a smooth coffee blend
  • Probiotics are heat-resistant, perfect for coffee
  • Can add nut milk, coconut oil, and other natural sweeteners to satisfy
  • Money-back guarantee
  • Free Chai Latte with order above $50
  • Can be combined with other Four Sigmatic products


  • Can become expensive when taking once per day — or more
  • Have to love coffee to enjoy this drink
  • There are cheaper alternatives available on the market

Claims vs. Reality

Four Sigmatic didn’t make a ton of crazy claims or guarantees with this product. Instead, they kept it simple and let their ingredients do the talking.

Earlier, we mentioned how this product was designed to provide a delicious morning cup of joe with added benefits for your immune system and gut health. To fulfill those demands, they coupled probiotics and prebiotics with two powerful functional mushrooms — Chaga and Turkey Tail — that both provide intense immune support.

With 15 functional mushrooms to choose from, they chose the right two with this product. Chaga was once used as a substitute for coffee during World War II, and Turkey Tail contains probiotics.

They mask the mushroom taste with quality fair-trade coffee and the addition of Yacon Juice Powder. Looking back at the few claims Four Sigmatic made about this product, they hit each one right on the nose.

Four Sigmatic Mushroom Coffee Bag And Scroll

Four Sigmatic Ground Mushroom Coffee Alternatives

You’ll be able to find functional mushrooms being utilized in a variety of coffee blends in the market today. While most of them won’t have the amount of attention and credibility as Four Sigmatic, it doesn’t mean they aren’t effective products.

Laird Superfoods provides a Peruvian coffee blend in both a medium and dark roast. Their blend will differ from Four Sigmatic’s blend because it’ll contain Lion’s Mane and Cordyceps mushrooms — in addition to Chaga. It won’t contain any probiotics or prebiotics but will improve exercise and cognitive performance.

Sun Alchemy’s Mushroom Coffee is a good option that provides Reishi, Chaga, Lion’s Mane, and Cordyceps mushrooms. Again, it won’t contain the probiotics or prebiotics.

If you’re looking for a more all-in-one mushroom coffee blend, La Republica’s Mushroom Coffee is an excellent option too. It will contain 7 different functional mushrooms, including Chaga, Lion’s Mane, Turkey Tail, Reishi, Maitake, Shiitake, and Cordyceps.

Final Verdict: Four Sigmatic Ground Mushroom Coffee

I really love this Four Sigmatic Ground Mushroom Coffee blend, much like I love Four Sigmatic’s entire lineup of products. It provides everything your body and gut need to support a healthy immune and digestive system. For those that are constantly dealing with upset stomachs and digestive issues, this is the perfect coffee for you.

You might be able to find other coffee blends that utilize functional mushrooms, but it will be difficult to match the quality and passion found in Four Sigmatic’s blend. You won’t have to fix your taste buds to enjoy it and won’t even know you’re consuming mushrooms.

You can also combine this coffee blend with some of their other powdered mixes, including protein, hot chocolate, lattes, serums, body butters, face masks, and even additions to your coffee blend!

You’ll be able to fully customize your daily routine to work alongside the magical powers of functional mushrooms — all thanks to Four Sigmatic!

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Ryan Brennan

Ryan Brennan is a health and fitness writer with both personal and professional experience in the field. His passion for nutrition stems from personal experiences dealing with malnutrition, low energy, and other health complications. Through research and experimentation, Ryan was able to overcome these issues and take control of his health. He now aims to help others do the same. Ryan has been writing about nutrition, fitness, and supplementation for the past 7 years. He also has experience in the field, serving as the manager of a high-end fitness facility in Las Vegas, NV where he currently resides.