I have Tourette's (not in the same league as 'John's Not Mad', mind!), and seem to be currently undergoing a hypersensitivity to caffeine, I'm ticcing like mad after I foolishly decided to stick the percolator on earlier for a nice cup of 'proper coffee'!!! *Definitely* will have trouble getting to sleep tonite...but once I'm asleep, I might be out between 8-14 hours(!!!!), not good when I'm working tomorrow.
I actually find the 2-a-night non
-herbal Nytol to be pretty good at getting me off to sleep (herbal is sh!te, Valerian's sh!te, plus it reeks
), though they give me sore eyes and make me a bit crabby the next day. Codeine is also a great knocker-outer for me, though as it's A. habit-forming and B. hard to get hold of in significant quantities, it's not really an ideal solution.
PS: The Nytols (diphenhydramine) often give me harmless 'translucent hallucination' effects when they kick in, you kind of see weird, see-through imagery in the dark shortly before sleep - it's quite trippy, a bit odd, but quite fun once you get used to them.