Ihave Insomnia for years and Melatonin works for me, but you will have to see the dosage and get the right amount. I've tried two type of melatonin and the winner would be GNC Melatonin 3mg (not selling in Malaysia, got it from singapore GNC). Universal Nutrition melatonin 5mg doesn't help at all. Instead it makes me dizzy unlike GNC melatonin, it helps me relax.