Four Kings is a combination of four powerful tonic mushrooms. Each of the mushrooms has been used for centuries to promote powerful resistance and to support glowing health. Many dozens of mushrooms are consumed in Asia for both culinary and medicinal use. A few of these mushrooms stand out as elite tonic herbs that have built reputations for promoting glowing health when consumed regularly.

Reishi mushroom (Ganoderma lucidum) is the most revered herbal substance in Asia. Agaricus mushroom is a Brazilian rainforest herb that has won overwhelming acceptance in Asia and is now commonly incorporated into Chinese tonic herbal formulations in China and Japan. It supports healthy immune system functions.

It has been established to support immune functions in normally healthy individuals. Cordyceps is an effective and powerful immune-supporting agent. Dragon Herbs uses cultured Cordyceps mycelium in Four Kings Combination. Maitake mushroom has gained a place in tonic herbalism due to its broad spectrum tonic benefits.