Sleepless Nights!?!

Sleepless Nights!?

My room mate is unable to sleep!
He has been suffering this for about 7 months.
He speaks to himself , beats himself and really is unable to sleep.
I think he has an emotional problem. He is getting thinner than before; at least he lost 6 kgs.
He took some medications to relax hi: first it works but then he is tootally sleepless.
Every 3 - 4 days he sleeps for 3 - 4 hours and then insomnia comes again.

PLease advise any kind of herbal, food, or nutrative assistant that could help him sleep.

Thanx

Bless his heart. I've gone through what he is going through, but I have never beat myself. However, I know what caused mine---I was worried over something. He needs to go back to the doctor and let them change his medication. He also needs to confront what is bothering him and deal with it.