Source Naturals Sleep Science Melatonin 1.0 mg provides a gentle and effective 1mg dose of melatonin, which is an ideal starting point recommended by many nutritionists to minimize potential side effects. The tablet form is a pure delivery method, avoiding the sugars and calories found in gummies. The inclusion of Calcium is a minor addition that may offer some bone health benefits, though not directly related to sleep. The product has a good review count and a competitive price per serving, positioning it as a reliable and accessible option for individuals seeking mild sleep support or those with melatonin sensitivity.