MELATONIN Benefits / Features: Promotes natural sleep* Commonly used for jet lag treatment* Helpful for: circadian rhythm sleep, heart health, boosting immunity, improving insulin function.* Why is Superior Source different from other vitamin lines? Superior Source soft molded MicroLingual tablets dissolve immediately under the tongue, resulting in quick and direct absorption. Our soft molded MicroLingual tablets contain no excipients and rely on a small amount of acacia gum to hold them together. Clean, Pure and Simple!