I noticed within days the improved memory with Lions Mane. Example - I used to often forget where I parked my car (in a carpark). Since starting Lions Mane I have not once forgotten my car's location. I feel a lot sharper and "Brain Fog" has noticeably diminished.
Cordyceps improvement has been a lot more gradual but, I have now comfortably reduced my coffee intake to one cup per day. This saves me at least $25 per week! I am about to try Turkey Tail next.