Although boric acid suppositories are widely known for their yeast killing properties, they also have antiviral, antiseptic and analgesic (pain killing) properties3.  Some women with IC find relief from symptoms of IC using these suppositories during a flare. 

 DOSAGE/USAGE:  One 600 mg capsule inserted vaginally at bedtime using Progest cream or another natural lubricant for a period of at least 2 weeks.  After initial treatment, once or twice a week for infection prevention and during IC flares. 

It is possible to obtain these suppositories ready made at some natural compounding pharmacies for a nominal fee.  A medical doctor can prescribe them if they are not available ready made and many women simply make their own.



1.       Prutting, SM & Cerveny, JD: Boric Acid Vaginal Suppositories: A Brief Review, Wiley-Liss, 1998, Infectious Diseases in Obstetrics and Gynecology 6:191-194

2.       Boric Acid Suppositories and Yeast Infection, Tao of Herbs Newsletter, Article 69:4

3.       Jones, A: Boric acid analgesic composition and method of treatment using the same, 2004, Patent#6720012:2-5



Any and all information provided by Diana Brady, Natural Healing, LLC, its agents, employees, merchants, sponsors and third party content providers is for information purposes only.  It is not intended to substitute for advice given by a physician, or other licensed health care professional.   Always consult with your own health care provider.  Information and statements regarding dietary supplements are based upon anecdotal evidence only and have not been evaluated by the food and drug administration.  This information is not intended to diagnose, treat, cure or prevent any disease or health condition.  Reliance on any materials presented shall be at your sole risk.


Painful Bladder Syndrome

Boric Acid

Boric Acid Suppositories

Boric acid vaginal suppositories have been used to treat vaginal yeast infections for over a hundred years.  It is thought that boric acid works in this capacity because it is a weak acid and makes the vaginal area more acidic.  The normal PH of the vaginal area is between 3.8 and 4.5.  However with a bacterial or yeast infection, that PH rises and provides an environment in which the infection maintains itself and spreads.  Returning the vaginal PH back to an acidic level destroys the cell walls of the yeast.  In clinical trials boric acid suppositories were much more effective than current oral medications such as fluconazole, itraconazole and nystatin1. 

 Boric acid is a white powder that is odorless and stable in air.  In all recent research no serious side effects were reported when boric acid was used exclusively as a vaginal suppository.  There were some reports of occasional skin irritation especially if the tissue was open or red as in vulvodynia.  Do not use the suppositories if the tissue is open.  Boric acid is toxic when taken orally and should never be swallowed!  Boric acid suppositories should not be used by pregnant or lactating women2.   

 The usual dosage is one 600 mg capsule inserted vaginally over the course of 2 weeks, usually at bedtime.  For very serious, resistant infections it is sometimes necessary for a longer course of treatment, even up to 4 months.  These suppositories cause a watery discharge and use of a panty liner is suggested.  Using Progest cream or another natural lubricant can aid with insertion of the suppository.  After initial treatment, use of the suppositories once or twice a week can help prevent a recurrence of infection.  They can also be used after sex, exercise or anything that tends to irritate the vaginal area and disrupt the PH. 


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