Boric Acid Per capsule $ 0.50 Boric Acid Boric acid’s primary medicinal benefit lies in its antifungal and antibacterial properties. It is used externally to treat a wide variety of ailments, including fungal infections such as athlete’s foot and yeast infections. Some folks capsule boric acid and use it as a suppository for vaginal yeast infections. Some find their tissues too sensitive for this treatment- if you wish try it, we recommend that you start with an external spot test and immediatel ...