Proton Labs Cordyceps sinensis (Cordyceps sinensis) DER 40:1 – 500 mg, 90 capsules. Cordyceps sinensis (Cordyceps sinensis) fruiting body extract in an exceptionally high DER 40:1 concentration is a dietary supplement that supports health and vitality. This product uses only natural mushroom fruiting bodies, rich in bioactive ingredients, and not the less valuable mycelium. Key features: 100%