★★★★★
I have found this to be true, also. NyQuil always was a problem and kept my up all night, but as I have gotten older, Benedryl and other such OTC drugs that you mention, now cause me to be drowsy but completely unable to sleep with increased RLS symptoms.
Eliminate Benadryl
★★★★★
I find benadryl makes my restless legs MUCH worse, as does anything like this or any of the PM medicines (Excedrin PM, Advil PM, etc.).