Premenstrual insomnia is often caused by premenstrual tension syndrome, which not only causes insomnia, but may also result in mood changes, anxiety or sensitivity to the situation. It is advisable to take vitamin B1 orally or together with glutamine, which has the effect of nourishing the nerves and improving sleep. It is also recommended that when insomnia occurs before menstruation, appropriate improvements in diet should be given. Do not eat sour and spicy, stimulating food, or food that is too hot and dry, such as fried food, which may aggravate the insomnia after eating. It is also recommended to soak your feet in hot water after insomnia and drink a glass of hot milk before going to bed to help you sleep.