The science, sourcing, and standards behind our organic mushroom extracts.


For centuries, mushrooms have been used to boost energy, sharpen focus, and strengthen the immune system.
At PrimeSelf, we’ve combined this ancient wisdom with modern science, creating clinically validated, dual-extracted mushroom powders that deliver measurable results - not hype. Every batch is tested, verified, and transparently sourced. 

What Are Medicinal Mushrooms?

Medicinal mushrooms are a select group of fungi that go beyond basic nutrition. Unlike culinary mushrooms you might add to a stir-fry, these species are rich in unique bioactive compounds such as beta-glucans, triterpenes, and antioxidants that interact with the body on a cellular level.

Research shows that these compounds can help modulate the immune system, support cognitive performance, and enhance stress resilience by promoting balance within the body’s natural processes.

Each species brings something different to the table: Lion’s Mane supports focus and neural health, Reishi promotes calm and recovery, Chaga offers antioxidant protection, and Cordyceps supports natural energy and endurance.

The PrimeSelf Mushroom Difference:

When it comes to mushroom supplements, quality determines effectiveness. All PrimeSelf mushroom products are: 

• Standardised to 30% Beta-Glucans, the clinically active compounds that matter. 
• Organically grown and extracted from the fruiting body, not the cheaper mycelium.
• Dual extracted (water + ethanol) to capture both water-soluble and fat-soluble compounds.
• Tested for heavy metals, toxins, and purity using international standards. 
• Sustainably sourced from our long-standing, GMP-certified supplier in China, the global leader in mushroom cultivation.
  
  

Meet Our Functional Mushrooms:

Below are the four cornerstone mushrooms in our range, each with distinct benefits and backed by science.

Organic Lion’s Mane (Hericium erinaceus)

AKA: The Smart Shroom

Lion’s Mane is like a personal trainer for your brain. It supports the production of Nerve Growth Factor (NGF), which helps your neurons grow and communicate better, so you can think sharper, stay creative, and feel switched on. 

Specifications:

• Source: Sporocarp (Fruiting Body)
• Extract: Dual (Water + Ethanol)
• Standardised: 30% Beta Glucans 
• Tested for heavy metals and toxins

➡️ Find it in Organic Lion’s Mane, Prime Mind, Shroom Elixir, and Peak02.

Organic Chaga (Inonotus obliquus)

AKA: The Immune Shroom

Chaga is basically your body’s built-in shield. Packed with antioxidants and beta-glucans, it helps strengthen your immune defences, fight oxidative stress, and keep you running at your best. Bonus: your skin will thank you too.

Specifications:

• Source: Sporocarp (Fruiting Body) (grown on Birch)
• Extract: Dual (Water + Ethanol)
• Standardised: 30% Beta Glucans 
• Tested for heavy metals and toxins

➡️ Find it in Bio Shield, and Shroom Elixir.

Organic Cordyceps (Cordyceps militaris)

AKA: The Zoom Shroom

If caffeine had a chill cousin, it would be Cordyceps. This legendary performance mushroom helps your body produce more ATP, the molecule your cells use for energy. You’ll feel more endurance, better recovery, and zero crash. 

Specifications:

• Source: Sporocarp (Fruiting Body)
  • Type: Militaris
• Extract: Dual (Water + Ethanol)
• Standardised: 30% Beta Glucans 
• Tested for heavy metals and toxins

➡️ Find it in Organic Cordyceps Mushroom, Shroom Elixir and PeakO2®.

Organic Reishi (Ganoderma lucidum)

AKA: The Snooze Shroom

Reishi is the calm in your chaos. Used for thousands of years as the “Mushroom of Immortality”, it helps calm your nervous system, reduce stress, and improve sleep quality. No next-day grogginess, just good, grounded rest.

Specifications:

• Source: Sporocarp (Fruiting Body)
• Extract: Dual (Water + Ethanol)
• Standardised: 30% Beta Glucans
• Tested for heavy metals and toxins

➡️ Find it in Organic Reishi Mushroom, Shroom Elixir and PeakO2®.

What’s Shroom Elixir?

AKA: The Ultimate All-Rounder

Can’t decide which mushroom to start with? No problem! The Shroom Elixir gives you the full functional spectrum: Lion’s Mane for focus, Cordyceps for energy, Reishi for calm, and Chaga for immune balance. 

Specifications:

• Source: Sporocarp (Fruiting Body)
• Extract: Dual (Water + Ethanol)
• Standardised: 30% Beta Glucans
• Tested for heavy metals and toxins
• Free from fillers, additives, and preservatives

Your all-in-one shroom fix for daily performance and resilience.

➡️ Found in Shroom Elixir

What’s Peak O2®?

AKA: The Performance Shroom Blend

PeakO2® is a patented mushroom performance blend made from six organic species - Cordyceps, Reishi, King Trumpet, Shiitake, Lion’s Mane, and Turkey Tail. It’s clinically shown to improve oxygen use, boost endurance, and enhance power output. 

PeakO2® facts:

• PeakO2® mushrooms are grown on organic oats in the USA
• Non-allergenic
• Vegan
• Gluten-free
• Non-GMO

➡️ Found in PeakO2®

What’s Bio Shield?

AKA: The Immune Defender

Bio Shield is an advanced immune support formula that combines high-potency Organic Chaga Extract with key immune-supporting nutrients, including Zinc, Vitamin C, and Vitamin D3.
It’s designed to strengthen your body’s natural defenses, boost resilience, and support recovery from everyday stress and fatigue.

Bio Shield facts:

• Contains organic Chaga extract, standardised to 30% Beta-Glucans
• Includes essential immune nutrients: Zinc, Vitamin C, and Vitamin D3
• Vegan-friendly and free from artificial additives
• Tested for purity, heavy metals, and potency
• Made with clinically validated ingredients

➡️ Found in Bio Shield

Where are your mushrooms sourced from?

Our mushrooms are grown in China, the birthplace of medicinal fungi and home to the best cultivation conditions on earth.

Here’s why we proudly source from there:

• Over 2,000 years of mushroom-growing expertise 
• The ideal natural climate for fruiting body growth 
• The highest global quality and safety standards
  

We work with only GMP and ISO-certified suppliers who provide full traceability and Certificates of Analysis for every batch. 

China was the first country to begin cultivating mushrooms at large scale and is now the leading grower of mushrooms globally and produces 85% of the world’s mushrooms.

Fruiting Body vs Mycelium: The Real Talk

Not all mushroom supplements are created equal. The fruiting body (the visible part you’d actually eat) is where all the bioactive compounds live. The mycelium, often grown on grain, contains less of the good stuff and more starch. 

We only use 100% fruiting body extracts, because if you’re supplementing daily, it should actually work. 

Polysaccharides vs Beta Glucans

Here’s a quick mushroom myth buster: 

High polysaccharide content does not mean better quality.

• Polysaccharides are general carbohydrates, many are just starch.
• Beta-Glucans are the active polysaccharides that deliver real immune and adaptogenic benefits. 

That’s why every PrimeSelf mushroom is standardised by Beta-Glucan content using the Megazyme method. You get exactly what’s on the label and what your body needs. 

Tested. Trusted. Transparent.

We don’t do mystery blends or “proprietary magic.”

Every ingredient is tested and verified for:

• Identity and purity 
• Beta-Glucan concentration 
• Heavy metals and microbial safety 
• Consistency and potency 

See full details on our Quality and Testing Page.

The PrimeSelf Promise

We don’t make supplements we wouldn’t take ourselves. 

Our mushrooms are tested, transparent, and built to perform because your body deserves better marketing claims.

PrimeSelf mushrooms are science in a capsule. Pure, potent, and purpose-built to help you feel your best, every single day.