Last Updated: September 2021

Four Sigmatic Review: Is Mushroom Coffee Actually Good?


Ground Lion’s Mane Mushroom Coffee

To all coffee lovers looking for a fresh experience, Four Sigmatic’s Ground Lion’s Mane Mushroom Coffee is an ideal blend. Dark and rich with a smooth buzz, this coffee proves that two unlikely ingredients can make a truly amazing product.

Ratings Breakdown


Their products are made from high quality ingredients, lab-tested, organic, vegan, and gluten-free.


Four Sigmatic is significantly more expensive than regular coffee. Therefore, if you don’t believe in the power of mushrooms, the value may be lost.

customer experience

Four Sigmatic offers a wide variety of mushroom enhanced products to create a more nutrient-dense experience and longer-lasting results.


They are the first company in the market to promote mushrooms as superfoods and incorporate them in a palatable way. Four Sigmatic also contributes a part of their profits towards the cancer cause globally to help increase their health reach.

Who is Four Sigmatic?

Four Sigmatic was founded by Tero Isokauppila in 2012, but it didn’t launch until 2015. He grew up in Finland on a family farm where foraged for mushrooms regularly. Growing up with the knowledge that mushrooms were superfoods, his studies of chemistry and nutrition only enhanced his love of mushrooms. So, he wanted to find a way to make them more inclusive in the mainstream diet.

The story of his grandparents brewing mushrooms into coffee during WWII helped solidify his idea. Originally, he called his company Four Sigma Foods in recognition of the fact that mushrooms surpass our traditional superfoods by 4 notches (or sigmas) on the nutrient chart.four-sigmatic-packaging

His company sold medicinal mushroom elixirs, drinks, and extracts in the Finland area to begin with. But, once he realized there was a much wider audience, he shook things up a bit. Tero changed the name to Four Sigmatic and began focusing more on creating mushroom coffee to sell in the United States. And he’s been on fire ever since!

Four Sigmatic has a 3-leg approach to how they want to do business.

These legs include:

  • Production of innovative, well-balanced health food products
  • Engaging in charitable actions
  • Giving free natural health education

The first 2 were easy for Four Sigmatic, but the third leg was the most difficult for them to flesh out. Initially, they engaged in different charitable organizations every year and rotated. The hope was that they could have a larger impact through diversity with their charitable giving. But, after a couple of years they decided to get more specific with their philanthropy.

Now, Four Sigmatic works only with their own charity to create medicinal mushroom boxes for cancer patients. Every 6 months they take a look at the profits to determine exactly how many medicinal mushroom boxes they can send out.four-sigmatic-back-packaging

In order to get on the list for a box, Four Sigmatic goes in order of who has contacted them or been referred to them to receive a box. Each box contains a 6 month supply of 5 different medicinal mushrooms. These specific types of  mushrooms have been tested and proven to help those with cancer.

Their passion to positively impact the world through knowledge and delicious products really helps to set them apart from other companies.


Golden Latte with Turkey Tail

Made with immune-boosting turmeric and Turkey Tail mushrooms, this delicious Golden Latte can serve as both a midday boost and a nighttime snack.

Four Sigmatic Taste & Preparation

Upon my initial order with Four Sigmatic, I was sent 5 different products to try. All of them were really simple to make and full of mushroom adaptogens.

The Four Sigmatic Mushroom Ground Coffee with Lion’s Mane was the first thing I tried. I generally don’t use pre-ground coffee since I use a french press instead of a drip coffee maker. The grounds need to be a more coarse grind for a french press, so this was a slight issue for me.four-sigmatic-lions-mane-coffeeBut, other than a few grounds in my cup, the coffee tasted just like coffee. And not mushrooms, which I was expecting. It was a little more bitter than I’m used to, however. I think that may be due to the mushrooms in the blend and could just take some getting used to. 

Overall, I enjoyed it, but would need to add sugar to drink it regularly due to the excess bitterness.

The drink I was really excited to try was the Four Sigmatic Golden Latte Mix with Turkey Tail. This is their version of a turmeric golden milk as a nighttime drink. It was warm, soothing, and delicious.four-sigmatic-golden-latte-mixI can’t say if it helped me sleep any better, since that’s not usually an issue for me. But it did help me wind down at night, which I liked. I would drink this one again more regularly just for the flavor and benefits of the turmeric. It only comes in at $2 per packet ($20 per box of 10 servings), so it’s easily justified to me for an occasional nightcap.

The Four Sigmatic Mushroom Cacao Mix was the next drink I tried. I was excited to try this one as another nighttime option to stimulate more relaxation prior to bed. The flavor was really good since this one is mixed with hot water to make a hot chocolate drink. It does contain Stevia, though, which a lot of consumers have shied away from recently.four-sigmatic-cacao-mixHowever, it’s promoted as a nighttime drink but it just kept me awake. I even tried to complete a sleep log to see how well it affected my sleep. But after two restless nights, I terminated the test.  I believe it had to do with the fact that cacao is a stimulant. Which is usually the opposite of what I want before bed. Although this drink is blended with Reishi mushroom for its sleep promoting abilities to help counteract the cacao. 

It just didn’t really work that well for me. So, if I were to drink this one again, it would be earlier in the afternoon or on a cold day. At $20 per package of 10 servings, the price tag on this one isn’t inconceivable. Especially when I consider how much I’ve spent on coffee or hot chocolate previously.four-sigmatic-sitting-drinkingThe Four Sigmatic Plant Based Protein with Superfoods Powder was an unexpected surprise for me. I’ve tried a lot of protein powders and am usually pretty disappointed with the flavor or the performance. But, with this one they succeeded on both accounts. The only sweeteners they use for this protein powder are:

I was happy to see that there wasn’t any Stevia in this product. While the brand says you can just mix it with water or a plant based beverage in a bottle and go, I prefer to add more foods to my smoothies. How I made my smoothie was by combining:

  • Handful each of blueberries and kale
  • 1 banana
  • ½ c plant based yogurt
  • 1 scoop Four Sigmatic protein powder
  • Some coconut milk to make it all blend


This quickly became one of my favorite smoothies! But, with a price tag of $50 per 15 serving container, it’s only something I can consider enjoying on rare occasions.

The last product I tried was the Four Sigmatic Coffee Latte Mix with Lion’s Mane. This is more of an instant coffee product, in that you only have to add hot water, stir, and go. However, since I normally drink fresh ground coffee in my French Press, I was the most hesitant about this one.

Ultimately, I didn’t really enjoy the latte mix. It didn’t taste like the type of coffee that I am used to and was exceptionally more bitter. However, if you’re an instant coffee purveyor, or are on the go a lot, this could be a great alternative. I would consider bringing this while camping, or backpacking, for ease of use. This latte mix also contains 10 packets and costs $20, which makes it a pretty steep instant coffee option to drink regularly for a lot of consumers.


Mushroom Cacao with Reishi

Delicious, chocolaty, and rich, the Mushroom Cacao with Reishi is a hot chocolate blend perfect for bedtime.

Is Four Sigmatic Good Quality?

Four Sigmatic did a lot of research when it came to where they should source their products. In most cases, we like to see companies that are made in the United States. However, that’s not always the case with food products.

The United States hasn’t been the best quality when it comes to food production in recent history. This is due to a change in agricultural practices on the family farm to more commercialization. Since Four Sigmatic is from Finland originally, they had a higher standard requirement for their products.four-sigmatic-mushrooms

They wanted to ensure that all of the mushrooms used in Four Sigmatic products are of the utmost quality and not just parts and pieces of the mycelium.

With products that just use the mycelium, it’s usually more of the grain the product is grown on that’s in the “mushroom” product instead of actual mushrooms. Four Sigmatic knew that they needed their products to be sourced from the fruiting bodies only, so that’s what they did. They searched for the best organic producers of the mushroom varieties they were looking for and use them only.four-sigmatic-breakfastTherefore, most of the mushrooms they use in their products are grown on an organic family farm out of China. China is one of the countries that has been growing and cultivating mushrooms the longest, so they’re good at what they do. The mushrooms they get from this farm include:

  • Cordyceps
  • Lion’s Mane
  • Maitake
  • Reishi
  • Shiitake
  • Tremella
  • Turkey Tail

Their Chaga mushrooms are grown and harvested in the largest Birch forest in the world, the Taiga, which is in Siberia. No matter which mushrooms are harvested and brought back to the United States, they are all third party tested prior to any production. This third party testing is to ensure they meet the quality standards for:

  • Allergens
  • Bad bacteria
  • Heavy metals
  • Molds
  • Mycotoxins
  • Pesticides
  • Yeasts

The fact that Four Sigmatic is extremely transparent about where they source their products and their testing practices is really comforting. Especially in today’s society when companies continually do a lot to hide the truth about their brand claims.


Protein Can – Peanut Butter

Four Sigmatic’s perfected plant protein is the finest and healthiest ingredient to use in smoothies, shakes, and anything else you choose.

Is Four Sigmatic Worth It?

Four Sigmatic makes some fantastic, delicious, and healthy drinks. What they are trying to do with their products is admirable. The fact that they are able to add so many adaptogens and organic products to their drinks is phenomenal. And the fact that they independently test every batch that gets shipped into the United States is fairly unheard of because of the costs alone. 

So, that is going to reflect in their higher price tags on a lot of products. Therefore, when it comes to whether or not their products are worth it all comes down to the consumer’s budget. If you’re not in a place where you can afford to spend $4-$5 on a drink or two daily, then their products would be an occasional treat.four-sigmatic-all-products-2-But, if you’re in a place where you can afford to spend a little bit more on your overall health, then I say go for it. After all, prevention and boosting the immune system can potentially save you a lot of money in the long run on health care. And if there’s a way to make prevention more delicious, like Four Sigmatic does, then why the heck not?


Mushroom Coffee Latte With Lion’s Mane

Supporting clean, focused energy, the Mushroom Coffee Latte with Lion’s Mane serves as a smooth, creamy alternative to those not looking for too intense a buzz.

Four Sigmatic Coupons & Discounts

Four Sigmatic tends to give discounts to subscribers of their email list. So that is a great place to start if you’re looking for a way to make their products a bit more cost effective right off the bat.four-sigmatic-coffee-brewingThey also offer a subscribe and save program to help consumers save on recurring purchases. Some of the best benefits of this rewards club are:

  • 20% off your order
  • Free shipping
  • Samples and gifts
  • Members-only swag

If all of these perks weren’t enough, we just happen to have a Four Sigmatic discount code you can also use. Use code THEFASCINATION at checkout for 10% off.

Frequently Asked Questions

For anyone who is wanting to add more health benefits to their life, Four Sigmatic products may be a great addition. But, there are probably quite a few questions consumers have about mushroom products before they dive in and give them a try.four-sigmatic-drinking

How long does Four Sigmatic take to ship?

Typically, an order takes 24-48 hours to process once you submit it. After that, you can expect it to take between 3-5 business days to get to you, if you live in the United States or Europe. If you’re outside these areas, the shipping time will vary. These include:

  • Asia/Africa: 4-5 weeks 
  • Australia/New Zealand: 10-15 business days
  • Everywhere else they ship to: 6-12 business days

What is Four Sigmatic’s returns or exchange policy?

Four Sigmatic is pretty easy going with their returns and exchange policy. If there is any reason you don’t like your order, they’re happy to issue a product refund. But, it gets even better in that they also have a price match guarantee. If you purchase a product and it goes on sale within 5 calendar days from the date of your purchase, you can reach out to them and they will issue a credit for the difference. Pretty cool, huh?

How does a Four Sigmatic subscription work?

Four Sigmatic makes it really easy to join their Shroom Club. If you want to save 20% off your order, and get some other great benefits, all you have to do is choose the monthly option instead of the one time buy. 

If you decide you don’t want the product again, or need to pause or cancel it, that can easily be done when you login. Four Sigmatic will send you a reminder well ahead of time that you have an order coming so you’ll have time to make any changes you want before you get charged. Other than that, you’ll get whatever products you’ve subscribed to get once a month delivered right to your doorstep.

When is the best time to consume Four Sigmatic products?

Four Sigmatic has made this much easier to determine with their products. Products with a green label are part of their Defend line and can be used at any time of day or night. Products with an orange label are part of their Think line and are meant to be consumed in the morning. Lastly, Four Sigmatic products with a blue label are part of the the Chill line and are meant to be consumed at night to help wind down

Can I safely combine mushroom products?

Yes, you certainly can. However, it’s best to begin with one Four Sigmatic product at a time to see how your body feels. Any time you are adding new adaptogens into your diet, this rule of thumb should be followed. Once you know how you feel after trying each product for a few days, then it’s perfectly fine to combine multiple products a day.

Four Sigmatic Mushroom Coffee Summary

Ultimately, Four Sigmatic makes some fantastic products. They have a unique corner on the market of health and flavor, which can be difficult to match.

While the prices of their products can seem a bit steep to most consumers, they are well worth the price tags. So, if you’ve been looking for a new way to incorporate healthier options into your regular diet, Four Sigmatic may have just what you’ve been looking for.

Exclusive Offers

Four Sigmatic

Ground Mushroom Coffee with Lion’s Mane


Four Sigmatic

Mushroom Cacao with Reishi


Four Sigmatic

Mushroom Coffee Latte with Lion’s Mane


Four Sigmatic

Protein Can – Peanut Butter