Melatonin has very little research associated with it. Most of what is “known” about melatonin is anecdotal. That’s the up-front warning. Otherwise, the limited research suggests that melatonin help regulate your sleep cycles so it can lengthen the phases of sleep where dreams happen. The longer the dram phase, the more bizarre the dreams get. There is also a little evidence to suggest that females have more bizarre dreams from melatonin than men.
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