I posted this on the Medscape message boards today:
I see a lot of pts who have failed the standard hypnotics (Rozerem, Ambien, Ambien CR, Lunesta, Sonata). It's important to screen for secondary causes, including restless legs. If they haven't taken Restoril yet, that's sometimes effective. I have found chloral hydrate effective for short term use (no more than 1 month), for breaking the cycle of insomnia. I have one patient on Xyrem for insomnia (and several who take it for narcolepsy). Before prescribing xyrem, it's important to rule out obstructive sleep apnea. I'll occasionally use Seroquel for insomnia, but only if there is comorbid psychiatric illness. I'll also sometimes use neurontin, but usually only if there are also neuropathic/RLS symptoms present.