Your Trusted Brand for Over 35 Years

This item is not available for purchase over the web or is obsolete.


  • Item Catalog Number: 00704

Maitake mushroom is known for its immune system boosting properties. SX-Fraction™ is designed and developed on an active compound isolated from the Maitake mushroom (Grifola frondosa). SX-Fraction™ can also be used as part of your diet to help maintain a healthy blood sugar level in those already within normal range.87-88

Maitake Products, Inc. is a pioneer of mushroom-based dietary supplements and has established credentials with “Maitake D-Fraction®, a renowned product that is based on another active compound only from Maitake. Maitake D-Fraction® is widely acclaimed to provide nutritional support for cellular immune function.

SX-Fraction™ has been developed, upgraded and standardized based on its own already patented beta-glucan compound (U.S. Patent #5,773,426).

Shiitake mycelia has been reported to be immunomodulating in the following ways:

  1. Activation of macrophages, promoting recognition of antigens and information transmission to the T-helper cells, increasing rate of phagocytosis
  2. Increase and reinforce interleukin-1 production, thereby supporting the T-helper cells
  3. Promote the mitosis and proliferation of B-lymphocytes
  4. Promote antibody production


Supplement Facts

Serving Size 1 tablet

Servings Per Container 90

Amount Per Serving

Maitake (Grifola frondosa)

250 mg

Fruit Body Powder


Maitake (Grifola frondosa) extract

100 mg

(SX-Fraction™, standardized 18%)


Other ingredients: dicalcium phosphate, sucrose fatty acid ester, cellulose, silica.

Contains no sugar, yeast, mold, artificial colors, dairy foods, chemical pesticides or fertilizers.

Dosage and Use
  • As a dietary supplement, take one tablet daily between meals, or as directed by your practitioner.


Product reviews are provided for informational purposes only and reflect solely the views and opinions expressed by the contributors and not those of Life Extension. We do not verify or endorse any claims made in these reviews. Please read the full product reviews disclaimer.