What is Melatonin? A hormone found in the body, melatonin helps promote more restful sleep. Natrol® Melatonin provides relief for occasional sleeplessness, nighttime relaxation and better overall health. Natrol® the Melatonin leader offers melatonin with a unique rapid dissolve technology. Natrol’s® Fast Dissolve tablets dissolve up to 30 times faster and come in a delicious strawberry flavor. It’s delicious. We promise. No water required, Natrol® Melatonin Fast Dissolve is convenient to take with you anywhere you travel.