Evidence Level
Emerging
While mushroom coffee as a specific product category has limited clinical trials, its individual components have substantial research. Hericium erinaceus (lion's mane) has been shown to improve mild cognitive impairment in a 2009 double-blind placebo-controlled trial (Mori et al.). Chaga and reishi have demonstrated immunomodulatory and antioxidant properties in multiple in vitro and animal studies, with emerging human trial data. The reduced caffeine content addresses the well-documented dose-response relationship between caffeine and anxiety/sleep disruption.