by Eric Brand This is the fruiting body of cultivated cordyceps (this is Cordyceps militaris). It has a similar constituent profile to wild Cordyceps sinensis. In fact, the lab-grown product is often even higher in active constituents than wild cord… more »

by Eric Brand This is the whole herb of Xi Xin. It is the medicinal that most of us are familiar with, but it is no longer considered safe for use. The aerial portions of the plant contain significant quantities of aristolochic acid and should not… more »

by Eric Brand This is the Xi Xin that should be in all of our clinics. Many Chinese materia medica scholars believe that only the roots of Xi Xin were used in Shang Han Lun times. In fact, the name Xi Xin means "thin acrid," which is thought to be… more »