From the Guidelines
Boric acid is utilized in medicine as an antifungal and antiseptic agent, commonly employed in the treatment of vaginal yeast infections, particularly for non-albicans Candida species and azole-resistant strains 1, 2, 3. It is available in various formulations, including suppositories and creams, with typical dosages ranging from 600-1200 mg per day for 7-14 days 2, 3, 4. Notably, boric acid is the active ingredient in medications such as Boric Acid Vaginal Suppositories, which are often prescribed for the treatment of recurrent vulvovaginal candidiasis, with a recommended dose of 600 mg intravaginally once daily for 7-10 days 1, 3, 1.
Key Uses
- Treatment of vulvovaginal candidiasis caused by non-albicans Candida species, such as C. glabrata 1, 2, 3
- Treatment of azole-resistant Candida albicans infections 2, 3, 1
- Treatment of recurrent vulvovaginal candidiasis 3, 4, 1
Dosage and Administration
- Typical dosage: 600 mg per day for 7-14 days 2, 3, 4
- Administration: intravaginally, once daily 1, 3, 1
Important Considerations
- Pregnancy: use with caution, as fluconazole may be associated with spontaneous abortion and craniofacial and heart defects 5
- HIV infection: treatment measures are identical to those for women without HIV infection 3, 1
From the FDA Drug Label
Uses • treats vaginal yeast infections • relieves itching and discomfort due to vaginal yeast infection The medical uses of boric acid are:
- Treatment of vaginal yeast infections
- Relief of itching and discomfort due to vaginal yeast infection 6
From the Research
Medical Uses of Boric Acid
The medical uses of boric acid include:
- Treatment of vulvovaginal candidiasis (VVC) and recurrent vaginal candidiasis 7, 8, 9, 10
- Treatment of bacterial vaginosis (BV) 11
- Alternative treatment for women with recurrent and chronic symptoms of vaginitis when conventional treatment fails due to non-albicans Candida spp. or azole-resistant strains 8
Antifungal Mechanisms
Boric acid has been shown to have antifungal mechanisms, including:
- Inhibition of oxidative metabolism 7
- Interference with the development of biofilm and hyphal transformation 7
- Fungistatic to fungicidal activity depending on concentration and temperature 7
Clinical Evidence
Clinical studies have demonstrated the efficacy of boric acid in treating VVC and BV, with cure rates ranging from 40% to 100% 8, 9, 10, 11
- A study comparing boric acid to fluconazole found similar cure rates and efficacy in preventing recurrence of VVC 9
- A study using a novel boric acid-based vaginal anti-infective (TOL-463) found high clinical cure rates for both BV and VVC 11
Safety and Tolerability
Boric acid has been shown to be safe and well-tolerated, with minimal side effects, including vaginal burning sensation, water discharge, and vaginal erythema 8, 10, 11