 So I want to tell you about Z-Factor. It's 100% drug-free. It's a way to help you fall asleep faster, sleep longer, and sleep deeper and better. Z-Factor is from the makers of Relief Factor, so you know they've done their homework. Z-Factor is much more than just melatonin. Developed by doctors, Z-Factor uses precise formula of four all-natural ingredients to calm your mind, relax your body, and ease you into sleep faster.