Always take Magnesium and never Melatonin. Magnesium is a mineral and natural. It regulates the melatonin in the body and that is the natural way for the body to have melatonin... which in turn kills insomnia. However, Melatonin is a Hormone...and taking hormones is never wise. When you take melatonin the brain starts thinking it does not need to produce it anymore and you become dependent on the hormone. This is never good. Magnesium is the natural tranquilizer of the human body and it helps the body build melatonin naturally.🙏