I found an OTC eyedrop @ Walgreens, labelled
ALAWAY. It is an antihistamine eyedrop, and the one I used that knocked me out after I put several drops in each eye (if one drop works.....). This, after my eye doctor told me that anything over one drop is wasted, anyhow.
At any rate, since using only one small drop of ALAWAY, my itching is relieved, significantly, and I don't seem to have the sluggishness I had with several drops. Might give it a try.
All the best.
AJ.