Trazodone
"I am a Parkinson's patient for 6 years.  Insomnia due to muscle pain & contractions has plagued my ability to sleep.  Previously a very healthy & fit person who rarely took medication.  

At my MD request I reluctantly tried Trazodone 50mg.   I take only half a pill along with half a PD pill 30 mins before bed.   

It's been amazing, no side effects, awesome sleeps & if I wake up for a washroom visit, easy 2 get back to sleep.  No morning drousyness.  The small amount of anti depressant is a bonus.    

I don't do every night but can assure it's not addictive."