I have never taken anything for insomnia, because for me it’s maybe one night in two weeks, when I feel like I don’t sleep at all, I recognise quite early that I’m not going to sleep, and lie there hour after hour, and eventually panic sets in because it’s getting light, or I start hearing early morning traffic
Then all the following day, I feel like I’ve got a dreadful hangover, I drag myself through work, have an early night, then I’m okay again for a while, quite often I just get up and read for a couple of hours, and have a cup of tea, but I know I’m not going to sleep
I can’t see any pattern to it, if I was retired, I probably wouldn’t worry so much, but I’m definitely not very sharp after next to no sleep