"i have had severe insomnia for about 3 years. my physician gave me 2 sample packs of 6mg silenor.  i cut them in half to take 3mg as needed. they worked wonderfully and i finally got several good nights of sleep without the groggy feeling in the morning. after the samples were gone, i got my rx filled and found out my insurance will not cover it.  after having been awake for 36 hours straight, out of desperation, i paid an arm and a leg for the silenor. the first tablet of the rx worked but that&#039;s it.  i increased to taking 6 mg and it still didn&#039;t work. still no sleep. i have given up on silenor and have gone back to a different insomnia rx that works sometimes but at least my insurance covers it it only costs me $5."