Most reviewers appear to enjoy the supplement. It reportedly helps with increasing energy and stamina while reducing anxiety. One person said that while this does work, real Cordyceps sinensis – harvested in the wild instead of grown in a laboratory – is a lot more effective. Few people seem to enjoy the taste or smell, so it might be best to take this supplement with food. Overall this could be an effective supplement with a lot of benefits. If you're interested in Cordyceps sinensis but want a sustainable and environmentally conscious supplement of it, Ultra Cordyceps by Doctor's Best might be the best solution.