Ganoderma (RG and GL) RG and GL Ganoderma is 100% pure Ganoderma mushroom extract (Ganoderma Lucidium) and is widely known as the “king of the herbs. The Reishi Gano and Ganocelium made by DXN are the finest available. The mushrooms are grown and processed under strict environmental controls at a state-of-the-art facility in Malaysia, and exported to countries throughout the world.