One to three cups for most healthy adults, and caffeine sets the number, not the mushrooms. The 400 mg arithmetic by brand, why daily beats occasional, what too much looks like, and the one timing ...
Cordyceps coffee promises energy from the mushroom, not just the caffeine. The human trials are small and mixed: better exercise tolerance in older or untrained adults, nothing in trained cyclists....
Lion's mane coffee blends coffee with extract of the mushroom most studied for focus and memory. The trials are small but real; the dose decides everything. Here is the evidence and how to choose.