I've had sleep problems my entire life. Usual OTC sleep aids with Diphenhydramine might work for a day or two but then they actually keep me awake and/or sap my energy the next day. A year ago I started using some with Doxylamine and that actually works good, but I have to take like three of them. But I have to sleep so I take it.

I got some prescribed 25g Promethazine for nausea. I took one of those and I was out like a light. I started using half of one at bedtime and was sleeping for 8 hours straight with no hangover effect. Best stuff ever. I looked it up and the Sominex that is sold in the UK uses Promethazine. In the USA Sominex uses Diphenhydramine. It's too bad I can't get Promethazine over the counter here.