If you are looking for the best maitake mushroom extract or fraction available on the market, I have a suggestion.
Please go to http://MaitakeQOLextract.com
It is the highest concentration of authentic patented Maitake Mushroom extract Patent #5,854,404 available.
And is the cheapest by far (per milligram of extract). From 2x to 5 times cheaper, when directly comparing price per milligram.
And supported by extensive research across the world. Plus real clinical trials completed and published to establish the optimal dose for daily use.
So definately the best maitake extract available.