My wife works nights, but has been on vacation and her hours, my son Raymond’s hours, and other factors are making sleep very difficult for me (which is why I ended up taking a nap yesterday afternoon). I take antihistamines for allergies this time of year, and I’ve already adapted to them which makes most over the counter sleep aids useless. I seem to have developed a tolerance to melatonin as well and it no longer seems effective. It’s hard to be productive, especially when it involves complex work as this often does, on inadequate sleep.