What is a contraceptive suppository?

Contraceptive suppositories are a locally applied contraceptive method, with spermicides as the main component. They are typically designed as solid inserts that are easy to place into the vagina, containing chemical agents such as nonoxynol-9, which can kill sperm or prevent sperm motility. During use, the suppository should be inserted deeply into the vagina before sexual intercourse, and a period of time must be waited to ensure the medication fully dissolves and covers the cervix, thus preventing sperm from entering the uterus. This method is primarily used by women.

Contraceptive suppositories are simple to use and do not affect sexual pleasure. Additionally, because the medication is placed deep inside the vagina and is not fully absorbed by the body, it generally does not affect the body's endocrine system. It becomes effective about 5–10 minutes after insertion into the vagina prior to intercourse.

However, the contraceptive effectiveness of suppositories is lower than that of oral contraceptives or intrauterine devices, and some women may experience allergic reactions or mild irritation of the genital area. Furthermore, contraceptive suppositories are not recommended for women suffering from vaginitis, severe cervical erosion, excessive vaginal laxity, or uterine prolapse.