Globaliser,
it is not available over the counter in SA either.
Dormicum in the UK is known as Midazolam and as far as I am aware is only available via injection or drip. It got some bad press a few years back as I think a nurse took advantage of some woman patients with it but got caught.
Either way, the doctor siad its quite safe for the one off flight, but obviously you should not take it over an extended period. As its a depressant, you should avoid tea/coffee wine/spirits etc (although I never found a problem!!)
I suppose I should put a disclaimer in here stating that this is my opinion and any one wanting to take the drug should consult a properly qualified doctor first.