About Boric Acid
Boric acid is used as a vaginal suppository for recurrent vulvovaginal candidiasis, particularly azole-resistant strains (C. glabrata). CDC STI Treatment Guidelines recommend 600 mg vaginally once daily. A 2024 systematic review (41 studies) reports mycologic cure rates of 40–100%. It is NOT for oral use — toxic if ingested orally. Only effective as a local vaginal agent.
What Boric Acid supports
- Supports vaginal health against recurrent yeast infections
- May help maintain healthy vaginal pH balance
How much Boric Acid to take
The RDA prevents deficiency. The effective range is what clinical trials used to actually move the outcome.
Effective
300–600
mg
600 mg once daily is the standard clinical dose per CDC guidelines for vaginal suppositories. 300 mg allows partial credit.
Clinical evidence
Moderate clinical evidence. Systematic review of 41 studies supports vaginal use per CDC guidelines; 40-100% cure rates reported
Reference