Reishi

A medicinal mushroom in traditional Chinese medicine for more than 2,000 years, making it one of the oldest mushrooms known to have been used medicinally.

Also known as: Lingzhi Mushroom, Ganoderma Lucidum

examine.com

ConsumerLabs

Wikipedia

pubMed

https://www.lifeextension.com/Magazine/2013/2/how-reishi-combats-aging/Page-01