BioPQQ (PQQ disodium salt), unlike normal PQQ, is able to cross the blood brain barrier. However, when it reacts with stomach acid it is said to be deactivated or the bioavailability significantly reduced.
Thus, for that reason I added it to a 100% dmso solution (0.5ml) and administered it on myself intranasally.
Immediately I felt a whole-body itch which is the most common experience when nerve growth factor is increased.
However, I did not experience sharpening of my senses which other nerve growth factor increasing compounds like lion's mane does to me.
I also did not feel a boost in mental energy whatsoever.
Can someone else please try this and report your findings?