Vitamin D from Organic Mushrooms
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- 1000 IU of Vitamin D per capsule
- Vitamin D2 made from organic mushrooms
- Made from Certified Organic mushrooms
- Gluten-Free, Non-GMO, Vegan
- Guaranteed >20% Beta-glucans
- No added starch, mycelium, or grain of any kind
- 300mg pills, 120 capsules, 120 servings
- Verified for quality at accredited 3rd party labs
- Made in an NSF certified facility in the USA
What Makes It Great
- 1000 IU of Vitamin D per capsule
- Vitamin D2 made from organic mushrooms
- Made from Certified Organic mushrooms
- Gluten-Free, Non-GMO, Vegan
- Guaranteed >20% Beta-glucans
- No added starch, mycelium, or grain of any kind
- 300mg pills, 120 capsules, 120 servings
- Verified for quality at accredited 3rd party labs
- Made in an NSF certified facility in the USA
Mushroom Vitamin D
By exposing button mushrooms to high amounts of UV light, we can convert ergosterol, a fungal sterol in mushrooms, into ergocalciferol (Vitamin D2), a natural non-animal source of Vitamin D.
Adequate levels of Vitamin D is important for a host of essential bodily functions. Daily supplementation with Vitamin D2 has been shown to have similar effects as Vitamin D3(1).
Why Beta-Glucans Matter
Beta-glucans are the most abundant and primary active compound found in mushrooms and mycelium.
These complex polysaccharides are where much of the immunological benefits come from which is why it is so important to validate and guarantee beta-glucan content.
A lack of beta-glucans can be attributed to many things like low quality ingredients, improper processing and extraction or the addition of fillers like grains (see alpha-glucans).
All Real Mushrooms products have verified levels of beta-glucans right on the label so you can trust that you're getting the benefits you deserve.
†Ratings based on results of the 2024 ConsumerLab.com Survey of Supplement Users. More information at consumerlab.com/survey.
Why we are rated #1 for quality.
Purity. Potency. History.
From a frustration with a lack of quality and transparency in functional mushroom supplements, Real Mushrooms was born.
Read Our Story Best Mushroom Supplement CompanyIndustry Leaders
Backed by over 40 years of experience, we continue to pioneer functional mushroom supplements supported by scientific research.
Beta-glucans Guaranteed
The beneficial mushroom compounds you want are right on the label.
Zero Grain Fillers
Unlike myceliated grain alternatives, our mushroom extracts contain absolutely NO grains or starch fillers.
Do You Really Know What’s in Your Mushrooms?
Many products that claim to contain mushrooms actually contain none. What they are is the mushroom's root system, known as mycelium, which is grown on grains like rice and oats and this grain cannot be separated from the final product. This residual grain contributes high levels of starch which in turn dilutes the potential for active compounds like beta-glucans.
A 2017 study from Nature on reishi supplements found that 74% of products were inauthentic with 68% containing starch-like polysaccharides (ie. fillers).
ConsumerLab also found similar results in their reishi report and found Real Mushrooms to be their #1 choice.
Loved by Practitioners Around The World
Rosemary Gladstar
Internationally Renowned Herbalist
“I can rave about these products. I love them. And also love the amazing customer service. By the way, the Mushroom Hot Chocolate is the best.”
Dr. Mark Bricca ND
Naturopathic Physician and Acupuncturist
“I am so grateful to be able to recommend Real Mushrooms formulas to patients. They are of utmost quality, grown and processed properly in order to be truly rich in beneficial mushroom-derived beta-glucans.”
Michael Max LAc
TCM Practitioner and Acupuncturist
“Real Mushrooms blends modern science with ancient wisdom to bring you potent and pure mushroom powders. I use Real Mushrooms in my clinical practice because I trust the quality and potency of their products.”
Lee Carroll BHSc
Medical Herbalist
“The brands I choose to use in clinic and recommend must meet my stringent high standards. Real Mushrooms ticks all the boxes for me and sets the benchmark for quality, safety, efficacy and trust.”
Frequently Asked Questions
Where are your mushrooms from?
All our mushroom extracts are from the leading supplier of organic mushroom extracts: Nammex. They have over 40 years of mushroom growing experience and were one of the first companies to bring organic medicinal mushroom extracts to North America.
Their ingredients go through rigorous quality control and are tested twice for heavy metals, agricultural chemicals and microbial contamination to ensure they meet all standards for dietary supplements of this nature. All of their extracts are made from certified organic mushrooms (fruiting bodies), organically grown or wildcrafted from deep within mountain regions of China.
Mushrooms used for dietary supplements are seldom grown in North American since it is too expensive. In fact, China is the leading supplier of mushrooms worldwide and supplies over 90% of the world’s mushrooms. It has a rich history of mushroom use as both food and medicine and is the birthplace of mushroom cultivation with shiitake being farmed in the early 1200s. China is one of the only places in the world where you can get 100% organic mushroom (fruiting body) extracts that can be sold at an affordable price.
How can Mushroom D2 benefit me?
Mushroom D2 may support immune, bone and cardiovascular health. It contains shiitake and agaricus mushrooms, which both showcase various forms of vitamin D2, D3 & D4.
What is the Difference Between Vitamin D3 and Vitamin D2?
There has been some debate on whether vitamin D3 is more effective than D2. The two forms have traditionally been regarded as equivalent based on their ability to cure rickets (a skeletal disorder that is caused by a lack of vitamin D, calcium, or phosphate). Most steps involved in the metabolism and actions of vitamin D2 and vitamin D3 are identical. Both forms can raise serum 25(OH)D levels.
Human kidneys may be able to convert Vitamin D2 to the active form of Vitamin D.
Rest assured that you can supplement your vitamin D2 from an environmentally friendly and humane option: mushrooms!
Why do you use mushrooms and not mycelium?
It is extremely important to distinguish the difference between mushrooms and mycelium.
Mushrooms are the "fruit" and reproductive stage of these organisms while the mycelium is the root system or "body" of the fungus.
Mushrooms contain much higher levels of active compounds like beta-glucans and have a very large body of research. They have also been consumed for thousands of years as food and many health benefits have been shown from just mushroom consumption.
Mycelium is commonly grown on a grain substrate and this grain cannot be separate from the mycelium so much of the final product is actually grain with no mushrooms present. This shows up in high amounts of starch and low amounts of active compounds like beta-glucans.
For these reasons, Real Mushrooms only utilizes mushrooms in all of their products with verified levels of the important active compounds like beta-glucans and always guarded against starchy fillers like grain.
Is Mushroom D2 synthetic or naturally derived?
It is naturally derived. We use organic Agaricus mushroom (button mushroom), which has been exposed to UV light bringing the vitamin D content up to over 40,000 IU per gram.
Why do the capsules contain other ingredients?
Natural ingredients don’t always flow smoothly through processing equipment and capsule manufacturers need to utilize other ingredients in order to fill capsules. It is common practise for encapsulation facilities to require the use of other ingredients.
We have worked closely with our encapsulation partners to make sure that only what is added is absolutely necessary to create the capsules.
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Where are your mushrooms from?
All our mushroom extracts are from the leading supplier of organic mushroom extracts: Nammex. They have over 40 years of mushroom growing experience and were one of the first companies to bring organic medicinal mushroom extracts to North America.
Their ingredients go through rigorous quality control and are tested twice for heavy metals, agricultural chemicals and microbial contamination to ensure they meet all standards for dietary supplements of this nature. All of their extracts are made from certified organic mushrooms (fruiting bodies), organically grown or wildcrafted from deep within mountain regions of China.
Mushrooms used for dietary supplements are seldom grown in North American since it is too expensive. In fact, China is the leading supplier of mushrooms worldwide and supplies over 90% of the world’s mushrooms. It has a rich history of mushroom use as both food and medicine and is the birthplace of mushroom cultivation with shiitake being farmed in the early 1200s. China is one of the only places in the world where you can get 100% organic mushroom (fruiting body) extracts that can be sold at an affordable price.
How can Mushroom D2 benefit me?
Mushroom D2 may support immune, bone and cardiovascular health. It contains shiitake and agaricus mushrooms, which both showcase various forms of vitamin D2, D3 & D4.
What is the Difference Between Vitamin D3 and Vitamin D2?
There has been some debate on whether vitamin D3 is more effective than D2. The two forms have traditionally been regarded as equivalent based on their ability to cure rickets (a skeletal disorder that is caused by a lack of vitamin D, calcium, or phosphate). Most steps involved in the metabolism and actions of vitamin D2 and vitamin D3 are identical. Both forms can raise serum 25(OH)D levels.
Human kidneys may be able to convert Vitamin D2 to the active form of Vitamin D.
Rest assured that you can supplement your vitamin D2 from an environmentally friendly and humane option: mushrooms!
Why do you use mushrooms and not mycelium?
It is extremely important to distinguish the difference between mushrooms and mycelium.
Mushrooms are the "fruit" and reproductive stage of these organisms while the mycelium is the root system or "body" of the fungus.
Mushrooms contain much higher levels of active compounds like beta-glucans and have a very large body of research. They have also been consumed for thousands of years as food and many health benefits have been shown from just mushroom consumption.
Mycelium is commonly grown on a grain substrate and this grain cannot be separate from the mycelium so much of the final product is actually grain with no mushrooms present. This shows up in high amounts of starch and low amounts of active compounds like beta-glucans.
For these reasons, Real Mushrooms only utilizes mushrooms in all of their products with verified levels of the important active compounds like beta-glucans and always guarded against starchy fillers like grain.
Is Mushroom D2 synthetic or naturally derived?
It is naturally derived. We use organic Agaricus mushroom (button mushroom), which has been exposed to UV light bringing the vitamin D content up to over 40,000 IU per gram.
Why do the capsules contain other ingredients?
Natural ingredients don’t always flow smoothly through processing equipment and capsule manufacturers need to utilize other ingredients in order to fill capsules. It is common practise for encapsulation facilities to require the use of other ingredients.
We have worked closely with our encapsulation partners to make sure that only what is added is absolutely necessary to create the capsules.
Shop by Type
20,000+ Reviews
Whether capsules or powders, we've got you covered.
- Choosing a selection results in a full page refresh.
How can Mushroom D2 benefit me?
Mushroom D2 may support immune, bone and cardiovascular health. It contains shiitake and agaricus mushrooms, which both showcase various forms of vitamin D2, D3 & D4.
What is the Difference Between Vitamin D3 and Vitamin D2?
There has been some debate on whether vitamin D3 is more effective than D2. The two forms have traditionally been regarded as equivalent based on their ability to cure rickets (a skeletal disorder that is caused by a lack of vitamin D, calcium, or phosphate). Most steps involved in the metabolism and actions of vitamin D2 and vitamin D3 are identical. Both forms can raise serum 25(OH)D levels.
Human kidneys may be able to convert Vitamin D2 to the active form of Vitamin D.
Rest assured that you can supplement your vitamin D2 from an environmentally friendly and humane option: mushrooms!
Why do you use mushrooms and not mycelium?
It is extremely important to distinguish the difference between mushrooms and mycelium.
Mushrooms are the "fruit" and reproductive stage of these organisms while the mycelium is the root system or "body" of the fungus.
Mushrooms contain much higher levels of active compounds like beta-glucans and have a very large body of research. They have also been consumed for thousands of years as food and many health benefits have been shown from just mushroom consumption.
Mycelium is commonly grown on a grain substrate and this grain cannot be separate from the mycelium so much of the final product is actually grain with no mushrooms present. This shows up in high amounts of starch and low amounts of active compounds like beta-glucans.
For these reasons, Real Mushrooms only utilizes mushrooms in all of their products with verified levels of the important active compounds like beta-glucans and always guarded against starchy fillers like grain.
Is Mushroom D2 synthetic or naturally derived?
It is naturally derived. We use organic Agaricus mushroom (button mushroom), which has been exposed to UV light bringing the vitamin D content up to over 40,000 IU per gram.
Why do the capsules contain other ingredients?
Natural ingredients don’t always flow smoothly through processing equipment and capsule manufacturers need to utilize other ingredients in order to fill capsules. It is common practise for encapsulation facilities to require the use of other ingredients.
We have worked closely with our encapsulation partners to make sure that only what is added is absolutely necessary to create the capsules.
Shop by Type
20,000+ Reviews
Whether capsules or powders, we've got you covered.
- Choosing a selection results in a full page refresh.
What is the Difference Between Vitamin D3 and Vitamin D2?
There has been some debate on whether vitamin D3 is more effective than D2. The two forms have traditionally been regarded as equivalent based on their ability to cure rickets (a skeletal disorder that is caused by a lack of vitamin D, calcium, or phosphate). Most steps involved in the metabolism and actions of vitamin D2 and vitamin D3 are identical. Both forms can raise serum 25(OH)D levels.
Human kidneys may be able to convert Vitamin D2 to the active form of Vitamin D.
Rest assured that you can supplement your vitamin D2 from an environmentally friendly and humane option: mushrooms!
Why do you use mushrooms and not mycelium?
It is extremely important to distinguish the difference between mushrooms and mycelium.
Mushrooms are the "fruit" and reproductive stage of these organisms while the mycelium is the root system or "body" of the fungus.
Mushrooms contain much higher levels of active compounds like beta-glucans and have a very large body of research. They have also been consumed for thousands of years as food and many health benefits have been shown from just mushroom consumption.
Mycelium is commonly grown on a grain substrate and this grain cannot be separate from the mycelium so much of the final product is actually grain with no mushrooms present. This shows up in high amounts of starch and low amounts of active compounds like beta-glucans.
For these reasons, Real Mushrooms only utilizes mushrooms in all of their products with verified levels of the important active compounds like beta-glucans and always guarded against starchy fillers like grain.
Is Mushroom D2 synthetic or naturally derived?
It is naturally derived. We use organic Agaricus mushroom (button mushroom), which has been exposed to UV light bringing the vitamin D content up to over 40,000 IU per gram.
Why do the capsules contain other ingredients?
Natural ingredients don’t always flow smoothly through processing equipment and capsule manufacturers need to utilize other ingredients in order to fill capsules. It is common practise for encapsulation facilities to require the use of other ingredients.
We have worked closely with our encapsulation partners to make sure that only what is added is absolutely necessary to create the capsules.
Why do you use mushrooms and not mycelium?
It is extremely important to distinguish the difference between mushrooms and mycelium.
Mushrooms are the "fruit" and reproductive stage of these organisms while the mycelium is the root system or "body" of the fungus.
Mushrooms contain much higher levels of active compounds like beta-glucans and have a very large body of research. They have also been consumed for thousands of years as food and many health benefits have been shown from just mushroom consumption.
Mycelium is commonly grown on a grain substrate and this grain cannot be separate from the mycelium so much of the final product is actually grain with no mushrooms present. This shows up in high amounts of starch and low amounts of active compounds like beta-glucans.
For these reasons, Real Mushrooms only utilizes mushrooms in all of their products with verified levels of the important active compounds like beta-glucans and always guarded against starchy fillers like grain.
Is Mushroom D2 synthetic or naturally derived?
It is naturally derived. We use organic Agaricus mushroom (button mushroom), which has been exposed to UV light bringing the vitamin D content up to over 40,000 IU per gram.
Why do the capsules contain other ingredients?
Natural ingredients don’t always flow smoothly through processing equipment and capsule manufacturers need to utilize other ingredients in order to fill capsules. It is common practise for encapsulation facilities to require the use of other ingredients.
We have worked closely with our encapsulation partners to make sure that only what is added is absolutely necessary to create the capsules.
Is Mushroom D2 synthetic or naturally derived?
It is naturally derived. We use organic Agaricus mushroom (button mushroom), which has been exposed to UV light bringing the vitamin D content up to over 40,000 IU per gram.
Why do the capsules contain other ingredients?
Natural ingredients don’t always flow smoothly through processing equipment and capsule manufacturers need to utilize other ingredients in order to fill capsules. It is common practise for encapsulation facilities to require the use of other ingredients.
We have worked closely with our encapsulation partners to make sure that only what is added is absolutely necessary to create the capsules.
Why do the capsules contain other ingredients?
Natural ingredients don’t always flow smoothly through processing equipment and capsule manufacturers need to utilize other ingredients in order to fill capsules. It is common practise for encapsulation facilities to require the use of other ingredients.
We have worked closely with our encapsulation partners to make sure that only what is added is absolutely necessary to create the capsules.
Shop by Type
20,000+ Reviews
Whether capsules or powders, we've got you covered.
