Toei Shinyaku Co., Ltd., offers original quality Best Agaricus Blazei that is known worldwide for its excellent nutritional profile and umpteen health benefits. These special mushrooms have a great consumer base in Japan, where this specific variety is widely coveted for its multiple health benefits, including boosting the immune system performance in the body. Being a well-recognized Research & Marketing company headquartered in Tokyo, Japan, we specialize in this medicinal mushroom, King Agaricus, and manufacture our line of Immune Booster King Agaricus 100 using the best varieties of these giant mushrooms for its formulation.