NOW's Rei-Shi Mushrooms come from live myceliums and fungi during the "fruiting stage", which grow on organic brown rice under controlled hygienic conditions, free of chemicals and yeasts.

Rei-Shi Mushrooms are traditionally used for:

increase vitality

heart stimulation 

inhibition of platelet aggregation 

normalization of blood pressure 

stress and asthma relief 

prevention and treatment of certain degenerative diseases