If you do not douche your vagina, the drug residue will remain in the vagina for 3-5 days after you stop taking it. Curettage tablets are a topical medication for the treatment of cervical erosion and cervicitis. They are usually used once a day and need to be flushed out using a vaginal douche before the next change of medication. If you do not douche the vagina, the residue will remain in the vagina for about 3-5 days after stopping the medication. It should be noted that the use of anti-coagulant vaginal tablets is prohibited during menstruation and it is recommended that the medication be given 3-7 days after menstruation. If vaginal itching or burning sensation occurs after using the medication, it may be an allergy and it is recommended to stop using the medication. If the itching persists after stopping the medication, it means that the allergic symptoms are more serious and it is recommended to go to the hospital for the appropriate anti-allergic treatment. It is also recommended to use a special tool to douche the vagina before each change of medication or within 24 hours after the medication is administered, so that the vaginal secretions can be drained cleanly and the inflammation can recover.