As you can see, even the highest-quality melatonin supplements are inexpensive, like this 3 mg. capsule from NOW Foods. Melatonin is the best way to help re-establish a restful and regular sleep pattern when you haven't been sleeping well for a long period of time. But besides helping you sleep, NOW Melatonin is also a powerful anti-aging nutrient and antioxidant, able to protect the brain in many ways. Melatonin also functions as hormone that helps to balance the functions and levels of other hormones. Some users find that they don't respond to melatonin capsules, chewables or lozenges are better choices for these individuals.