Four Sigmatic

There is always a latest and greatest fad when it comes to health—a new way of eating that will transform your body and well-being forever. Maybe you’ve experienced this yourself, dropping tons of dough on health products that don’t actually bring noticeable results? Perhaps your cupboard is chock-full of capsules and powder that don’t live up to their marketing hype. The founders of Four Sigmatic certainly experienced this themselves, and it was this frustration and lack of truly educated information that led us to build this company. Four Sigmatic was founded with the goal of cutting through all of the hype and helping people eat more of the world’s most scientifically studied superfoods, like mushrooms.

Four Sigmatic wanted to make these incredibly powerful foods taste better and be easier to use, so that they can be simply incorporated to upgrade your existing habits. Everyone can upgrade or add few small things in their current diet with higher quality options. Food happens to be one of the easiest elements to start out with. It’s like the white belt in Karate, everyone needs to do that first before moving to the next level!

When we founded Four Sigmatic, our first goal was to find the smallest thing people could add to their current diet to produce the biggest positive impact on their health. For us, the answer was obvious: medicinal mushrooms.

Giving Back

We believe that our products can and will make a significant social contribution simply based on their day-to-day health benefits. But we also want to give back in another way: Whenever you buy any of our mushroom boxes, we will put a portion of the proceeds toward providing free mushroom kits for cancer patients. These Contribution Kits, as we like to call them, include more than $1,500 worth of mushrooms for patients. The current version of the Contribution Kit includes dual-extracted chaga, reishi, shiitake, maitake, and turkey tail mushrooms.

This year 564,800 people are expected to die of cancer in the United States alone. That’s more than 1,500 lives lost per day. Cancer is clearly one of the biggest health crises of our time. Fungi are involved in the industrial processing of about half of the most profitable products used in human medicine, and medicinal mushrooms have been particularly widely studied for potential cancer treatment. Even though much more research is needed, many top cancer organizations and hospitals recommend their use as an alternative or complimentary treatment.

To distribute the kits we’ve partnered up with Boarding 4 Breast Cancer (B4BC), a 501(c)3 non-profit foundation focused on breast cancer prevention. Through two decades, B4BC has been educating people, raising funds, and giving back to local communities and research-based organizations. They organise rad events and do their best to help raise the awareness of cancer prevention, which is why we wanted to work with them. Plus they are super nice people. Visit their site to learn more about their work and how to get engaged.  We also donate Contribution Kits to non-breast cancer patients and survivors. If you, or someone you know, is interested you can reach out to us directly.

Four Sigmatic Superfoods, Medicinal Mushrooms & Adaptogenic Herbs:

  • Mushroom Coffee with Lion’s Mane and Chaga
  • Mushroom Coffee with Cordyceps and Chaga
  • Chaga Elixir
  • Lions Mane Elixir
  • Reishi Elixir
  • Cordyceps Elixir
  • Hot Cocoa with Reishi
  • Hot Cacao with Cordyceps
  • Four Sigmatic Mushroom Coffee – Ground
  • Four Sigmatic Mushroom Coffee – K-Cups
  • Mushroom Matcha
  • Adaptogen Coffee Mix
  • Mushroom Mocha Mix
  • Organic Mushroom Mocha
  • Organic Adaptogen Coffee
  • Golden Latte
  • Chai Latte

Tero Isokauppila

Tero Isokauppila : Founder of Four SigmaticTero Isokauppila, the founder of Four Sigmatic, is on a mission to popularize 'shrooms... but just the legal kind.

Born in Finland to an agronomist father and nursing teacher mother, Tero grew up on a farm his family has owned since 1619. There, he foraged for mushrooms and other wild foods while learning about the natural food space at an early age.

Following his early education on the farm, Tero later completed a Degree in Chemistry and a Certificate in Plant-Based Nutrition from Cornell University. In 2006, he won a Finnish innovation award for discovering that the sought-after Japanese culinary matsutake mushrooms also grow in Finland. Tero is a reputable source on superfoods, an expert on natural health and has been a featured speaker at Summit Series, Wanderlust and WME-IMG.

Tero has lived in eight countries on three continents. He has a strong personal interest in health and wellness, which includes activities like making raw chocolate and practicing yin yoga. He has also recently taken up a unique practice of napping on a nail mat, which is a modern form of acupressure and helps to energize his busy life.

Tero founded Four Sigmatic in 2012 and its products are now sold in over 25 countries. In 2015, the company launched in the U.S. and relocated its headquarters to Los Angeles, California. Four Sigmatic’s functional mushroom coffees, hot cacaos and elixirs are sold at retailers nationwide, including Whole Foods and other natural grocers, as well as online at and through online health websites like Thrive Market.

Tero is a reputable source on superfoods, an expert on natural health and has been a featured speaker for example at Summit Series, Wanderlust, Further Future, Culinary Nutrition Conference, and WME-IMG. Tero was also chosen as one of the world's TOP 50 Food Activists by the Academy of Culinary Nutrition. 

Tero and Four Sigmatic have been featured in prominent media outlets, including Vogue, Time, Forbes, W Magazine, Harper's Bazaar, BuzzFeedBon AppétitGoop, Well+Good, MindBodyGreen and many others

Four Sigmatic

Our name is a super geeky way of saying that our company represents only the fifty most researched foods. In science—and especially in the natural sciences—a large enough sample size will usually form a natural distribution. So, if, for example, you compare the nutrient density of all foods, you will see a bell curve form. If you take four standard deviation from the mean, you will have the four sigma foods. These foods are more nutrient dense than 99.9999 percent of all food options.

The Finnish #funguys

Four Sigmatic TeamThat’s us! The Four Sigmatic core team has known each other for years. Most of our team members were actually roommates in college. We left our well-paid corporate jobs with the likes of Google, Citibank, and Hewlett-Packard to work on behalf of the great mushroom.

Our Mushroom Mission began in the Nordic countries in 2012 and, with the help of our innovative products, we have expanded to more than twenty-five countries in less than four years. In 2014, we relocated our business headquarters to the U.S. Our products launched in the U.S. in January 2015, and it has been quite a journey since then. We’re still a small employee-owned startup … but good things come in small packages, and we truly believe our passion and hard work will help us continue to make a real difference in global health.




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Contact Four Sigmatic

Customer Service is available Monday - Friday 9-5 PST

Via email

You can email us anytime to receive customer support:

We do our best to respond within 24-48 hours!

Via Live Chat

We try to be on Live Chat as often as possible, M-F. You can find the chat box in the bottom right hand corner of our website!

Via Text

 You can also text us at +1(855) 400-8584!

Via Phone

You can give us a call at +1(855) 400-8584. Just leave us a message, and we will give you a call back right away!

Via Facebook

 Leave a message to us on Facebook here.

Additional information


English, Finnish

How Do I Contact Four Sigmatic?

Answer: If you'd like to contact us and receive customer support via email, please send an email to All emails are typically responded to within 24-48 hours.

Will you offer elixirs without stevia in the future?

Answer: At the moment, we do not plan on discontinuing the use of stevia. We also use only less than 0.1% of the stevia in the products where it is contained. Note also that we have several products without any stevia (Chaga, Hot Cacao with Cordyceps, both Mushroom Coffees and our Superfood Blends).

Lion’s Mane Coffee vs Cordyceps Coffee

Answer: Our Mushroom Coffee with Lion’s mane contains combined 500 mg of lion’s mane and chaga mushroom dual-extracts and 100 mg of wild rhodiola root. Recently, science has focused on lion’s mane’s exceptional regenerative effects on our nervous system. Coffee can be an outstanding productivity booster, but even more so when enhanced with a good lion’s mane extract! The natural nootropic (cognitive boosting) effects of lion’s mane work hand-in-hand with the stimulating effects of coffee to create the perfect state of mind. Our Mushroom Coffee with Cordyceps contains combined 500 mg of cordyceps and chaga mushroom dual-extracts. Coffee is so energizing because it stimulates the central nervous system and adrenal glands. Combining this with the more balanced cellular energy boost of cordyceps mushroom means that we can double coffee’s effects while using only half of the caffeine normally found in coffee! As an added bonus, cordyceps also supports the adrenal glands. Chaga lowers the acidity of the coffee and gives an immune-system boost in both Mushroom Coffees.

Mycelium grown on grain or fruiting bodies?

Answer: None of our products contain mycelium grown on grain and powdered (also called ‘biomass'). We exclusively focus on making the most potent and bioavailable mushroom products, prepared from the actual fruiting bodies and dual-extracted for the best bang for your buck! We do agree that all parts of the fungi have their benefits. Mycelium is also good, but less effective than fruiting bodies. Especially as fruiting bodies can be extracted and concentrated much more than mycelium. In deed the new mycelium science is interesting and we look forward to seeing more amazing benefits found in them. Currently, however, the commercial mycelium growing methods are still too young and undeveloped. There are always problems with high amounts of the growing substrate and starch (often 50-80% starch) in the final product. We only use dual-extracted mushroom fruiting bodies, which are either wild-harvested from Siberia (Chaga) or cultivated in greenhouses at pristine environments using the best possible growing mediums such as real logs. Our state-of-the-art dual-extraction, concentration and spray-drying process allows the final extract to be dried back to a powder form without any fillers or carriers. This way you can enjoy 100% potent mushroom extract!

What amount of polysaccharides and triterpenes are in the products?

Answer: We ensure and test that all of our mushroom extracts always contain at least 30% polysaccharides. Our cordyceps extract has 40% polysaccharides (+15% cordycepic acid). In addition to the really high polysaccharide levels, our chaga and reishi extracts have a minimum of 2% triterpenes thanks to the state-of-the-art dual-extraction process.

Where do the mushrooms come from?

Answer: Our Organic Chaga mushrooms come wild harvested from the deep Siberian forests in Russia, where the mushrooms are naturally growing in birch trees over many decades surviving the harsh winters and hot summers. Our Organic Reishi, Lion's mane and Cordyceps mushrooms that we use the fruiting bodies of are grown in greenhouses on the countryside of China. We optimize the growing medium for the specific mushroom, such as with reishi we grow the red reishi strain in myceliated basswood logs that are buried underground. The mushrooms are collected when the fruiting bodies are formed and grown into an optimal size, after which they go through our extensive dual-extraction process and quality testing. None of our mushrooms are grown on grain and in the final product there are no carriers or excipients used. All of the polysaccharides (always minimum of 30%) are derived only from the potent mushroom extracts.

What is Dual Extraction?

Answer: The dual-extraction that we do for our mushrooms is a process that consists of many separate stages. Two of those stages are hot water extraction in boiling water in high pressure (to prevent the sought after medicinal compounds from disintegrating) for an extended period of time and then extracting in alcohol. This way we make both hot water soluble and fat soluble compounds bioavailable. After the extraction process the combined extract gets concentrated and at the end spray-dried back to a powder form without carrier or fillers.

What is the Correct or Maximum Dose?

Answer: It is most important to find a good dose that works for you. Especially if bigger doses seem to increase the good effect, you could even try up to 3 packets in one day, as there are generally no risks for overdosing or any bad side-effects with medicinal mushrooms or the high-quality ingredients that we use. For legal reasons our official statement however is: "Maximum dose: 1 per day".

What is the Shelf Life of Four Sigmatic Products?

Answer: All of our products have very long shelf life, thanks to our packaging choices and to the natural properties of our potent mushrooms and botanicals. For legal reasons the date marked in the products is 2-3 years from the manufacturing. Even after the best before date is coming close or has passed, the products in most cases are safe and suitable for consumption with common sense.

Are the Products Certified Organic?

Answer: Our Reishi, Lion's Mane, Cordyceps and Chaga are all USDA Certified Organic. Most of our products are certified organic according to USDA NOP regulations. Even the ones that we currently haven't gotten all the paper work done for yet, consist of mainly organic ingredients and the final products go through constant and comprehensive laboratory testing to ensure the purity and safety of the products.

How Many Calories in Four Sigmatic products?

Answer: Basically in the mushroom extracts there are no nutrients that would play a role in metabolism, instead the medicinal compounds we have extracted and made bioavailable affect through balancing the hormonal system and mediating immune system functions. Our products are similar to what you could buy encapsulated and swallow a handful of those similar mushroom extract capsules. For all the Mushroom Elixirs it is the following (per 1 sachet, 3 grams): -Calories 5 -Fat 0.1g -Sodium 0mg -Carbs 1g -Protein 0g For Chocolate Mushroom drinks (per 1 sachet, 6 grams): -Calories 25 -Fat 1g -Sodium 25mg -Carbs 4g -Protein 0g For Mushroom Coffees (per 1 sachet, 2.5 grams): -Calories 0 -Fat 0g -Sodium 0mg -Carbs 0g -Protein 0g





Affiliate Info for Four Sigmatic

Help us to spread the mushroom love and earn revenue! Membership is FREE

Do you like our products? Does our ethos resonate with you? Do you have an established relationship of some kind with a group of smart people interested in personal health and wellness? If you answered “yes” to all three questions, then the #Funguys Affiliate Program could be for you.

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