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Mushroom Science was founded in 1994 by John Seleen, He Xianguo, and Steven Bailey in an effort to introduce PSK (polysaccharide-K) to American health care practitioners. PSK is extracted from...

The hot water extraction method used for producing our mushroom supplements maximizes the human body’s ability to access and benefit from the natural compounds found within mushrooms. Hot water extractions...

At Mushroom Science our highest priority is to provide our customers with products they can trust. For this reason we get the majority of our mushrooms from organic certified farms in China, the birthplace of medicinal mushroom treatments and where, to this day, 85% of the world's mushrooms are grown.