The Preferred Supplier program is about quality and confidence in the supply chain from start to finish. In order to display the Preferred Supplier seal, participating companies satisfy stringent acceptance criteria each year to ensure ongoing compliance. If they are a Preferred Supplier, you can trust they’ve taken the critical steps necessary to display the seal.

NASC Certified Supplier

About Nammex

Nammex is the number one North American supplier of premium quality, USDA certified organic whole mushroom extracts.

Nammex specializes in the research, development, and production of medicinal mushroom ingredients. Today, our products are being used in a wide range of consumer products including functional foods, nutritional supplements, beverages, skin care, pet supplements, and CBD formulations.

We have been growing mushrooms since 1973, have been incorporated since 1992, and have maintained Organic Certification since 1993. Our products are Kosher certified, non-GMO, gluten-free, and vegetarian/vegan-friendly.

Deep in the mountains of China, home to 85% of the world’s mushroom farms, Nammex grows mushrooms the way nature intended: using natural substrates, sunlight, and fresh air amidst seasonal temperatures and humidity. We have worked for over 20 years with our GMP certified (through NSF) Chinese partners to produce products in a sustainable manner – without the use of agricultural chemicals. This has allowed us to reach a quality standard that few other companies can meet. Our products do not contain mycelium, carriers, or grain fillers – they are 100% mushroom.

Each of our mushroom extracts has an established specification for Beta-D-Glucan, the most important active ingredient in mushrooms. Nammex tests each lot for Beta-D-Glucan, as well as other compounds including ergosterol, triterpenoids and ergothioneine. Additionally, each lot is screened for heavy metals, pesticides, and microbiological activity.

Developed and refined over decades of experience and collaboration with other top mushroom experts, our Nammex Testing ProtocolTM is becoming an industry standard. It is your guarantee of pure, highly active organic mushroom products in a fine powder form.



Our most popular species are reishi, lion’s mane, chaga, and cordyceps. We also offer turkey tail, shiitake, tremella, maitake, oyster, poria, and phellinus.

All Nammex products are derived from real, cultivated mushrooms, unlike other commonplace mycelium products.


Nammex is the first company to master the cultivation of Turkey tail mushroom – see our news bulletin here:




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