Perhaps you can try count sheep/recall back anything that u want to recall until you start feel sleepy and automatic shift into sleep mode    it works for me . If you still insist to take supplement , you can try Melatonin. There are several supplement seller in this forum that you can contact to ask them where to get this product 

Hi Debby. How long u had been taking the sleeping pills?
My friend is also taking sleeping pills everyday else he couldn't sleep. I introduced him to take some herbal beverage. 2nd day of taking herbal beverage, he told me he can sleep without the need of taking sleeping pill.
I have another friend, she has been insomnia for 20years and early this year she told me her issue insomnia is gone.
If i can help you to sleep the number hours that you need without taking sleeping pills and also giving you high energy level needed in a day, will you be interested to know how & further?

I'm really surprised you're getting some actual advice in this thread TS... really.  Malaysians have a thing about never ever taking pills no matter what because they're "not natural", but here you're really getting some advice.  There's still 1 or 2 that chime in with the "pills are bad" routine, but over all this thread is pretty good.

There are some over-the-counter things that are real effective that you can ask for.

Polaramine = ask for it at your pharmacy.  Around RM2 per slip.  Take 1 for a very light effect, 2 for an average effect.  Do not take more than 2.

Atarax = someone mentioned this already.  Cost 10 ringgit I think?  Takes a while to start working... need to take it 1 or 2 hours before you sleep.  And yes it does keep working after you wake up, which sucks.

Promethazine = Now this... THIS... is the best OTC medicine there is in Malaysia!  Pronounced "Pro - Meth - Uh - Zeen".  Only a few pharmacies carry the pill version... there's one pharmacy in Hatas Square right beside Ampang Hospital that you should definitely check out if you want this.  The pharmacist there is a friend of mine, and she keeps this one in stock.  Only a few other pharmacies carry this, and it's always in liquid form, which for some reason is just less effective for me.  The Hatas Square pharmacy has the pills.

GABA = Gama Amino Butyric Acid... while you cant find this one in Malaysia, it is something you can order from the internet.  It's safe to take 1 of these along with one of the other 3 listed here to make those more effective.  No drug interactions, no side effects.  GABA is made by your body already, so this counts as a "natural substance" no matter what anybody tells you.

Hope that helps.