I couldn’t sleep at first after Missy died so I got some Valium from the doc. Awesome.
Non-prescription stuff:
a glass of something alcoholic can relax you (! slippery slope warning);
Syndol (pain killer) knocks me out, but gives me constipation and actually causes headaches if you use it for more than a couple of days;
smoking dope is reckoned to be awesome (I don’t but people I know who do swear by it);
I used to have a tape recording of a confidence-inspiring hypnosis session – I used to put it on and get into bed – amazingly brilliant sleeps.
If it’s due to the menopause then HRT will help – you can get a short course, at low doses (but you may be a man, in which case this suggestion will not be helpful).
HTH