Inclusion criteria:
single
age 18-25 years old
regular menstrual cycle (25-30 days)
occurrence of pain before or at the same time as menstrual bleeding
moderate to severe pain intensity (4 to 10 points) based on visual analogue pain index in three days at First, menstrual bleeding
no history of abdominal and pelvic surgery
no symptoms such as burning, itching or abnormal secretions
no stressful factors such as the death of 1st degree relatives
separation of parents, etc. in the last 6 months
no smoking
no drug allergy
Exclusion criteria:
body mass index above 30
sensitivity to non-steroidal anti-inflammatory drugs such as mefenamic acid
use of oral contraceptives, supplements or any drug and herbal decoction
suffering from medical diseases such as organ disease. Genital, heart, lung disease, endocrine disorders, metabolic disease, gastric or duodenal ulcer, digestive, liver and kidney disease
use of drugs that suppress the central nervous system, anticoagulants and antihypertensive drugs
suffering from mental illnesses. According to the patient, it is like depression, severe anxiety and severe stress