Although Ksalol is not FDA approved, it’s still safe and effective to use at bedtime if you’re having difficulty falling asleep and staying asleep. This medicine is classified as a sedative, which means that it has the ability to induce sleep by slowing brain activity, suppressing nerve impulses, and slowing heart rate. If your doctor has approved the use of Ksalol for you or your child and it’s been working well, there’s no harm in continuing the treatment. Do not exceed the recommended dosage on any label, as this can prevent you from sleeping soundly through the night.