Medicinal Cannabis is a great natural sleep aid. Studies show that THC has sedative properties and is effective at improving mood, pain, muscle spasms, and sleep. I would recommend a THC dominant 15mg tincture before bedtime.
https://journals.lww.com/psychopharmacology/pages/articleviewer.aspx?year=2004&issue=06000&article=00011&type=abstract
tatiananp