Do pheromones for concentrating/ better memory exist? Any suggestions?
for memory…I don’t think one exists lol 
But for concentrating, I’ve heard read stuff about taf. Just search for Taf and you should get a whole bunch of excellent reports
Oh, here’s a thread by tish, it may be useful to you.
I think Selva is right about the TAF…not enough experience under my belt to recommend anything else though, sorry
djacquelyn 