I use 10mg Amitryptyline when I need to catch up, I got it a while back from my GP and didn't really want to use it but I have to say as long as I take it early eve, I am then able to fall asleep and stay asleep (or get back to sleep if I wake up), I used to feell quite groggy in the morning with it but if I get the timing right it works out fine. If you feel you've tried everything then yes all the advice above it good, you can't beat the hormones but you can help aid your sleep with sleeping aids. The estrogen point is very interesting, estrogen is a stimulant so would it not follow that too much leads to insomnia, nightmares etc? Although it's the drop in estrogen that causes the night sweats so people assume their estrogen is low if they have the sweats. I think my hormones are high and low all over the place at the moment still being in peri, so I'm thinking I just have to accept that some days will be worse than others depending where I am in my cycle and use sleeping aids when I need to. On top of the vitamins, sprays, herbal tea, banana eating and relaxation - of course!