Miracle pill?

I think I discovered a miracle pill last evening: melatonin, a hormone supplement.

Taking a small dose helped me to fall asleep and stay asleep for almost five hours, the most I've slept since my transplant surgery two weeks ago.

I'm grateful to the nurse who suggested I try it!

I've read that melatonin is non-addictive. I certainly hope so. 
I only expect to take it temporarily during my recuperation.