What's your experience with Ramelteon?

Can anyone share their experience with Ramelteon, such as dosage, how long taking, did it help with sleep, side effects, etc? I've been taking 75-150mg of Trazodone and 2mg melatonin for a while but it doesn't always work well, so my doctor prescribed 8mg Ramelteon. I afraid to take it because it's one of the hypnotic drugs where you can sleepwalk without knowing it. I've also read it's not very effective helping insomnia. I've had insomnia for 18 months, I think related to fibromyalgia symptoms that started about the same time.