Boric acid 600 mg suppositories help treat vaginal yeast infections that are resistant to antifungal medications, according to the Centers for Disease Control and Prevention (CDC). These suppositories are gelatin capsules that a person inserts into her vagina and becomes liquid as it warms up to body temperature.

Infections caused by candida fungi typically occur in women who are experiencing changes in their immune system or during pregnancy, when the hormones that normally balance flora may change. As a result, the fungi have an overgrowth that can cause symptoms such as itching, irritation, pain during sex, and abnormal vaginal discharge.

Yeast infections can be treated with an over-the-counter (OTC) drug called fluconazole or a prescription antifungal cream called ancobon. If these medicines do not work, a doctor may prescribe boric acid, which is available as a capsule that a person inserts into her vagina once or twice daily for 14 days.

The Benefits and Uses of Boric Acid 600mg Suppositories for Vaginal Health

The suppositories are an effective way to treat chronic yeast infections that do not respond to OTC antifungal treatments, says Dr. Melanie Andersen, a UW Medicine OB-GYN.

If you are pregnant, talk to your healthcare provider before using boric acid suppositories. This medication can have teratogenic effects on unborn babies.

To avoid side effects, be sure to read the instructions on your suppository package carefully and follow the dosages. Also, be sure to wash your hands and vaginal area before and after insertion of the suppository.

The most common side effects of boric acid suppositories include itching, burning, and redness in the vaginal area. If you experience these side effects, stop using the suppository and see your doctor right away. These may be signs of a serious side effect, such as a severe allergic reaction.