 This is where this can really, really change what you're doing. It's from the makers of Relief Factor, and we've been talking about it as Relief Factor Sleep for a while, but they talk about it as Z-Factor. It's a 100% drug-free way to help you fall asleep faster, sleep better, and stay asleep longer. Z-Factor uses a formula of four all-natural ingredients to calm your mind and relax your body so you can ease into sleep faster and sleep right through the night.