It is a kind of pharmaceutical raw material, origins from natural cordyceps (dongchongxiacao)mycelium, the products are strictly be manufacturered in GMP factory. The ingredients are as follows, Loss on weight : 3.11% Solvents residue: 3.50% Adenosine : 0.377% Mannitol 11.92% Cordyceps acid 7% Cordyceps polysaccharide 7%