Oyster Mushroom Extract Powder | 30% Beta Glucan Min. | Whole Fruiting Body

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  • Oyster Mushroom Extract Powder | 30% Beta Glucan Min. | Whole Fruiting Body
  • Oyster Mushroom Extract Powder | 30% Beta Glucan Min. | Whole Fruiting Body
  • Oyster Mushroom Extract Powder | 30% Beta Glucan Min. | Whole Fruiting Body



What is Oyster Mushroom Extract?
Oyster Mushroom is a type of fungi that closely resembles that of oysters, both in shape and color. Oysters contain several substances believed to aid in health. Substances included in Oyster Mushrooms are beta-glucans, dietary fiber, and a variety of polysaccharides.

How Does Oyster Mushroom Extract Work:
Beta-glucans are responsible for immune-modulation. Immune modulation also is known as immunomodulation and is a process wherein the immune system undergoes modification to its response. This modification has been shown to stimulate the immune system while modulating humoral and cellular immunity. In addition to beta-glucans, polysaccharides also help to assist immune function. Polysaccharides make up the cell wall of mushrooms and are t-cell antigens and primarily responsible for humoral immunity. In addition, Oyster Mushrooms have been shown to reduce MDA levels in the liver, reduce the activation of SOD enzymes while also reducing liver damage scores.

Potential Benefits Include:

  • Supports Healthy Heart Function†
  • Liver Protective†
  • Supports Healthy Immune Response†

How Harvest Naturals Oyster Extract is Made
Harvest Naturals Oyster extract is made from a dual extraction process. The first step of this process is hot-water-extraction. Hot-water-extraction is the most common and the least expensive and where many companies stop. When you find "cheap" mushroom supplements, they are either simple-dried powders or are water extracted only. The second step of the dual extraction process is the alcohol extraction.
Ethanol (or sometimes methanol) extraction isolates the water-insoluble components. The alcohol extraction process is, in general, used as a second step after hot-water extraction. Also, since alcohol alone will not break down chitin effectively, heat must be added. Without this second step of alcohol extraction, many of the additional beneficial ingredients cannot be extracted. Harvest Naturals only uses the fruiting body of the mushroom in its extracts.

Recommended Dosage
The recommended dose is 500mg to 1000mg per day, which is roughly equal to 1/4 to 1/2 teaspoon. At this dose, a 30-gram jar will last you 30 to 60 days.

Consider This:
Try comparing our Oyster Mushroom Extract Powder to our Wood Ear (Auricularia Auricula) Mushroom Extract Powder, to see which yields the best results for you.

Instant COA


Instant COA

Another HR Supplements exclusive is the “Instant COA” (Certificate of Analysis). We are building a customer facing interface that will allow you to view product COA's on any mobile device. Simply scan the Quick Response (QR) code on the HR Supplements product label and instantly view the lab reports.

Please note this is an ongoing effort. We produce hundreds of products and we keep COA’s, lab sheets, production reports and other internal records forever. It will take time to convert all of them. Meanwhile, for archived COA's please click here to request a copy.



CERES Organic Certification




Statements & Warnings †

† These statements have not been evaluated by the Food & Drug Administration. This product is not intended to diagnose, treat, cure or prevent any diseases.

Keep out of the reach of children. Do not take this or any other supplement if under the age of 18, pregnant or nursing a baby, or if you have any known or suspected medical conditions and/or taking prescription drug(s) or OTC medication(s). Always consult with a qualified health physician before taking any new dietary supplement.

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