Black reishi mushroom (Ganoderma sinense or sometimes a variant of Ganoderma lucidum) is a rare type of reishi known for its dark, almost black fruiting body. Like other reishi mushrooms, it has been used for centuries in traditional Chinese medicine for its adaptogenic, immune-modulating, and anti-inflammatory properties. Black reishi is often considered more potent than red reishi in some traditions and is prized for supporting liver health, improving resilience to stress, and promoting longevity. It is typically consumed as a tea, tincture, or powdered extract.