I apologize for the H3 confusion.
I recently added cetirizine hydrochloride to my protocol and, once again, my quality of life has improved exponentially! So I decided to do research on histamine and found this page on Wikipedia https://en.m.wikipedia.org/wiki/Histamine
In continuing my research I went here https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5233962/
This caught my attention because I have trouble with some sort of an ADD type brain thing so it appeared Ciproxifan might help. Thank you so very much for all you’ve done.