If a woman takes melatonin in small amounts only occasionally, it will not affect delayed menstruation. The most important role of melatonin is to adjust the person’s sleep and improve the quality of sleep. Nowadays, office workers are generally more stressed, many women due to insomnia, in turn, can cause irregular menstruation, irregular periods, pushing back the phenomenon, so a small amount of melatonin to adjust the sleep, in fact, also conducive to women’s menstruation turned to regular. Melatonin long-term eating, there is a risk of injury to the brain nerves, confusion, dizziness, fatigue and other side effects, but also make the body dependent on the drug, the human body caused a certain impact, so taking melatonin must control the amount of medication, and then a small amount of medication is not affected by the delayed menstruation.