It is a kind of lactobacillus. It should be used for at least 7-10 days to treat vaginal dysbiosis, and it is forbidden to have sex during this period. You should go to the hospital 3 days after the treatment to review the vaginal secretion and observe the number of Lactobacillus. After it is back to normal, you can have sex, but you should pay attention to personal hygiene, especially before and after intercourse. If you have other gynecological inflammatory diseases, you should use the medication according to medical advice; if you have abnormal leucorrhea, vulvar itching, etc., you should go to the hospital in time for regular treatment.