Is melatonin habit-forming? June 19, 2021 00:13 Updated No, melatonin is not habit-forming. Related articles Steady As You Glow Ingredient Breakdown Can I take melatonin digestive supplements while using Mella products? Are Mella products safe during pregnancy and breastfeeding? Has melatonin been studied in topical use? Where is proof that it has all these benefits? What percentage or dose of melatonin is in Mella products?