"I&#039;m 47 and have severe insomnia associated with Young Onset Parkinson&#039;s. Normally I take stilnox/Ambien nightly for sleep but recently I went through a 2 month period when the Ambien was not working effectively so my doctor gave me this stuff...It gave me the worst, most vivid nightmares I can ever remember having. Thankfully the Ambien is back to working so I won&#039;t be taking this horrendous stuff ever again.....If you have Parkinson&#039;s, I would definitely just say no to seroguel as I have talked to several other Parkinson&#039;s patients that have had a bad time with it."