> - Anti-histamine (cetirizine hydrochloride aka Zyrtec) as needed - I'm allergic to my wife's dog and some nights I feel like I have bugs crawling on my skin. It can even wake me up.

Antihistamines are associated with increased dementia if you take the wrong ones, so it's not a good way to get more sleep. Melatonin, trazodone or a newer sleep drug is safer.