Four Sigmatic Protein Powder Review: Worth It? A Dietitian Examines

Four Sigmatic’s Protein Powder was created using functional mushroom clinically-tested ingredients to provide extra benefits that go very well with protein powder.

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Protein powder is a supplement that is made from one or more basic sources of protein. The most common sources in protein powder are whey, eggs, peas, rice and soy. Concentrated and then made into a powder, this product has an excellent shelf life and can be used in a number of ways. You reconstitute it using some sort of liquid for easy consumption. Many people use protein powder to make a smoothie, shake or even sprinkle on oatmeal or cereal.

There are many people who use protein supplements for one reason or another. Bodybuilders and athletes use it to boost their performance and increase muscle mass. It can be used as part of a weight loss program, substituting a meal. Increasing your protein intake can also boost the overall function of your immune system, promote healthy skin and increase your energy levels.

We already covered Four Sigmatic Mushroom Coffee earlier, as mushroom supplements are continuing to gain popularity.

Today we’re going to be talking about Four Sigmatic Protein Powder; what it’s made from, how you can use it and its benefits. We’ll also take a look at some of the available alternatives and see if it's worth it.

Quick Summary of Four Sigmatic Protein Powder Review

summary information four sigmatic protein
Product:Four Sigmatic Protein Powder
Claimed Benefits:Could help support immune system, increase focus, reduce stress, raise natural energy levels
Key Ingredients:Organic plant-based protein, chaga extract, reishi mushroom, Lion's mane, organic ashwagandha, cordyceps mushrooms
Price:Starting at $20
Mixes well:Yes
Avg. Rating:4.7/5 (Over 80 reviews)
GW Rating:4.6/5

Four Sigmatic Protein Powder

Courtney D'Angelo

Quality Ingredients
Brand Transparency
Effectiveness Based on Real Results
Ease of Mixing


A high-quality protein powder made with clinically-tested ingredients, Four Sigmatic Plant-Based Protein Powder provides multiple benefits on top of just protein.


Introducing Four Sigmatic Plant-Based Protein Powder

four sigmatic plant-based protein powder

The Four Sigmatic brand is based on some of the most nutritional and beneficial ingredients in the world. Using functional mushrooms and other ingredients, you can purchase a very healthy and pure protein powder from Four Sigmatic. The company began in Finland, thanks to a man named Tero. Tero grew up on a family farm, learning all about rare and nutritious ingredients that he would eventually incorporate into his company’s products.

Four Sigmatic Plant Based Protein powder can be used to make smoothies, shakes, pancakes and so much more. The ingredients have been carefully chosen to support the immune system and increase your protein intake. Not only is it organic, but it has been thoroughly tested by a third-party participant. The protein comes from natural ingredients like pumpkin, pea, hemp and chia.

Plant-Based Protein with Mushrooms and Adaptogens

Four Sigmatic sells a plant-based protein powder that includes mushrooms and adaptogens as part of its makeup. Protein comes from five pure sources, and there are additional ingredients included such as Chaga, Lion’s Mane, Reishi, Cordyceps, Turkey Tail, ashwagandha and eleuthero. This is an incredibly nutritional and fulfilling protein powder that doesn’t contain anything unnatural or artificial. Even the best real vanilla is used to provide the product with a subtle and natural flavor.

Plant-Based Protein with Superfoods

The Four Sigmatic Plant-Based Protein with Superfoods is a wholesome protein product that provides your body with nutritional ingredients that will support your body all day long. It’s made with pure protein from plant sources, a host of functional mushrooms (Chaga, Lion’s Mane, Reishi, Cordyceps, Turkey Tail) and organic vanilla. It is free of artificial sweeteners, including stevia.

four sigmatic plant-based protein with superfoods


  • Only contains two grams of added sugar. It doesn’t contain stevia or other artificial sweeteners.
  • Contains 7 functional mushrooms and adaptogens
  • The vanilla flavor is mild enough that you can still mix in any additional ingredients that you want (fruit, veggies, etc.)
  • Also comes in single serving packets for on-the-go use
  • You cannot taste the mushrooms in the product
  • High quality ingredients are sourced from all over the world


  • This is not a nut-free product. Many of their products contain peanuts and coconut. There is cross-contamination in the facility where Four Sigmatic products are made.

Claimed Benefits

claimed benefits four sigmatic protein

Not only can you increase your protein consumption with the use of Four Sigmatic protein powder, but their products also provide you with a whole host of benefits that can boost your overall health and help you feel great each day.

Could Help Support a Strong Immune System

Four Sigmatic plant-based protein powder provides the body with healthy protein that is very nutritious and nutrient-dense. However, the functional mushroom composition of this product can help support a strong immune system. Mushrooms such as Cordyceps, Lion’s Mane, Chaga and Reishi contain glucans. These glucans are fibrous substances that exist in the cell walls of mushrooms. They have amazing immune-enhancing benefits thanks to their ability to increase the production of fighter cells in the gut (where most of our immune system exists). Glucans also help build up our beneficial bacteria in the gut, increase antioxidants in the body and trigger an immune response when pathogens are present in the body.

May Help Increase Focus

Functional mushrooms allow us to clear our minds easier. We can also achieve better sleep with their regular use. We are better able to focus on whatever it is that we’re doing when we feel well rested and have a clean mind. Other ways that we can increase our focus include reducing inflammation in the body, boosting our immune function and fighting against oxidative stress. We can accomplish all of this with the adaptogens, and mushrooms included in Four Sigmatic’s Plant-Based protein products.

Could Help Reduce Stress

Functional mushrooms help the nervous system calm down. They help the body to reset the response that we have to stress. They have been used for centuries to enhance the benefits of meditation in cultures such as Hinduism and Buddhism. Meditation can help regulate breathing and stimulate the vagus nerve.

May Help Increase Energy Levels

The ingredients in this product contain beneficial nutrients such as polyphenols, polysaccharides and beta-glucans. All of these ingredients help to power the body and increase energy levels. Adaptogenic ingredients help the body cope with stress easier, so you don’t feel so drained. Functional mushrooms can help regulate your blood sugar levels, preventing sugar crashes.

Key Ingredients Analysis

ingredients four sigmatic protein

All of the ingredients in Four Sigmatic’s protein powder are sourced from high quality sources. The company uses a third-party testing provider to confirm levels of purity while checking on safety and quality. Let’s take a look at what Four Sigmatic has included in this specific type of product.

Organic Plant-Based Protein

You’re probably familiar with the fact that meat sources have a high protein content. When you eat things like chicken, beef, pork and fish, you consume protein. However, there are people that choose to follow a vegan or vegetarian lifestyle. Some people simply avoid too much protein from animal sources because it can lead to inflammation in the body and other issues. Plant-based protein is a very clean and beneficial way to consume your protein or increase your protein intake. Sources in this protein powder include pumpkin, hemp, chia, coconut and pea.

Chaga Extract

Two-hundred milligrams of Chaga extract are included in each serving of Four Sigmatic plant-based protein. This fungus that typically grows on tree trunks can easily dissolve in fluid, so it’s a great option for a protein powder that’s going to be reconstituted. Chaga is very high in nutrients like vitamin D, B vitamins, potassium, selenium, zinc and a whole host of amino acids.

Reishi Mushroom

There are two-hundred milligrams of Reishi included in one serving of Four Sigmatic protein powder. Reishi mushrooms have many powerful benefits that include anti-aging, anti-inflammatory, boosting the immune system and fighting against cancer.

Cordyceps Mushroom

The Cordyceps mushroom has been included in this protein powder thanks to how potent and powerful it is. Cordyceps can boost exercise performance, which is an optimal side effect when using protein powder. It increases adenosine triphosphate in the body, which is an important part of delivering energy to the muscles.

Lion’s Mane Mushroom Extract

Lion’s Mane mushroom extract has the potential to improve your memory function, increase mental clarity, enhance your mood, improve focus, and boost your overall brain health. Four Sigmatic has included two-hundred milligrams in one serving.

Reishi Mushroom Extract

Reishi mushrooms can be used in protein powder and supplements to prevent cancer, provide anti-aging benefits and boost the immune system. It can also help to prevent and treat infection.

Organic Ashwagandha

This ancient medicinal herb has been used for centuries thanks to its ability to help the body better handle stress, boost brain function, lower cortisol levels and balance your blood sugar levels.

Cost and Where to Buy

You can visit https://us.foursigmatic.com/ for more information on this plant-based protein powder. You can also purchase their products on the website. One container of protein powder costs $25 per month (you subscribe and save). You can also purchase single serving packets of protein powder for $20. Keep in mind, prices are higher if you’re just purchasing Four Sigmatic’s products one at a time without subscribing.

purchase four sigmatic protein website

Real Four Sigmatic Protein Reviews and Average Rating

Four Sigmatic protein powder has an average rating of 4.7 stars out of five stars with more than 80 reviews on just their Vanilla Superfoods blend. People love how this product tastes, how easily it dissolves, its versatility and its ability to increase protein consumption through plant-based sources.

Read more reviews

Alternatives Compared to Four Sigmatic Protein

four sigmatic protein alternatives

There are other plant-based protein powders that you can take into consideration if you like this concept but aren’t thrilled with what Four Sigmatic provides. Here are some of your alternatives.

1st Phorm Vegan Power Pro

This Vegan Power Pro product by 1st Phorm is made from primarily pea protein isolate and rice protein. It also contains a Green Superfood Complex, a Phytonutrient Blend and a Digestive Enzyme. Made with organic and pure ingredients, 1st Phorm Vegan Power Pro does not contain artificial flavors, gluten, sweeteners, dairy, soy or animal products.

Go to 1st Phorm

Ritual Plant-Based Protein Powder

Ritual’s Plant-Based Protein Powder 18+ can be used to increase feeling of fullness, boost energy levels, increase your protein consumption, improve bone health and boost your ability to develop lean muscle through your workouts and physical activity. It’s a very pure and natural product that doesn’t contain artificial ingredients.

Learn more about Ritual Protein Powder

Go to Ritual's website

Laird Superfood Plant-Based Protein Powder

This Superfood Plant-Based protein by Laird doesn’t contain any animal products or artificial ingredients. It is made from plant-based ingredients such as Sacha Inchi, which is a seed that contains all nine naturally occurring essential amino acids. Functional mushrooms have also been added to this product.

Go to Laird Superfoods

The Bottom Line: Is It Worth It?

You don’t have to be a bodybuilder to use protein powder in your daily routine. A lot of people don’t realize how beneficial of a product this actually is. Protein is something that our bodies need for building and repairing cells. We also use protein to transport nutrients throughout the body, produce enzymes and balance hormone levels.

If you’re trying to lose weight, you can use protein powder in a few different ways. For example, you might be dealing with hunger pains that are causing you to consume too many calories over the course of 24-hours. You can drink a protein smoothie or shake in place of a snack or meal. You’ll still be providing your body with the essential nutrients that it needs, but you can cut back on the fat and calories that you’re consuming. A lot of people notice a substantial weight loss when they start replacing one of their meals with a protein-based product. Increasing your protein consumption through the plant-based sources that we talked about today can also help you to feel full longer. You won’t feel the need to snack as often, leading to decreased calorie consumption.

worth it four sigmatic protein

Tips for Success from the RD

Wondering how much protein you need to consume with each serving of plant-based protein? I have some tips that can help you determine what you should be using each day. According to the Recommended Dietary Allowance, a healthy adult should be consuming approximately .8 grams to 1.8 grams of protein per kilogram of body weight.

Calculating Your Protein Intake

Determine what your current weight is. Divide that number in pounds by 2.2 to figure out what your weight in kilograms is. You can also check online to see if there is a conversion calculator that can quickly do the math for you.

You will then multiply that number by .8 or 1.8, considering how much protein you want to work into your diet each day. If you’re looking to fill in nutritional gaps or lose weight, you’ll want to stick to the lower end of the spectrum. Athletes and bodybuilders will move towards the higher end of that scale in order to accommodate for training. 

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Courtney D'Angelo, MS, RD

Courtney D'Angelo, MS, RD, earned her masters degree in Nutrition and Foods from the University of Georgia. She's a Registered Dietitian at Morrison Healthcare and has a strong passion in helping people improve their wellness!

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