Boric Acid Vaginal Suppositories – Do They Work?

Boric acid is an antifungal and antiviral that is used to treat Candida albicans and the resistant strain of the yeast Candida glabrata. It has been used to treat vaginal infections for over a century. If you are suffering from chronic or recurrent yeast infections, you may wish to try using this remedy.

Boric acid can be purchased over the counter and inserted into gelatin capsules that are used as vaginal suppositories. Continue reading to learn more about this pocket-friendly and effective treatment.

Research on Boric Acid

A group of researchers reviewed 14 studies (comprising two randomized clinical trials, four case reports, and nine case series) on the treatment of recurrent vulvovaginal candidiasis using boric acid. This review was published in the Journal of Women’s Health. It showed that between 40 and 100 percent of individuals with the condition were cured, and major differences in recurrence rates of yeast infection were not present in any study.

Using the data to back their claim, the researchers declared that boric acid can be used as a safe alternative to conventional treatments. Moreover, it is affordable and targets azole-resistant and non-albicans strains of yeast that are not usually cleared by other treatments. Different studies recommend different dosages. With nearly the same results when using boric acid for 2 weeks versus 3 weeks in a study, treatment duration does not seem to affect results to a great extent.

Usage Instructions

Make sure that you have the correct diagnosis given by a healthcare professional before you use boric acid. You can also ask them for guidance on how to use the suppositories and what other treatment options are available. Premade boric acid suppositories can be found in most online and brick-and-mortar pharmacies.

One of the most popular boric acid vaginal suppository brands is Fem-Rx. You can also use boric acid powder (available online) and size 00 gelatin capsules to make suppositories yourself. It is an easy task; you only need to fill up the capsule, remove the excess using a dinner knife, and tightly close it.

Whether you use readymade suppositories or make them yourself, you will usually require approximately 600 mg of boric acid per day. A new suppository needs to be inserted once every day for one or two weeks.

Here are the steps to insert a suppository:

  1. Take the capsule out of its package with clean, washed hands.
  2. Insert the suppository in any position you find comfortable. Many women prefer inserting suppositories while lying down with knees bent or standing with feet a few inches apart and knees bent.
  3. Make sure you insert the suppository slowly as far up the vagina as possible. You can use an applicator, if available, or your finger for insertion.
  4. If you used an applicator, remove it and dispose of it properly.
  5. You may have discharge after inserting the suppository so using a panty liner is a good idea.
  6. Wash your hands once you are done.

The suppository should be inserted at the same time every day; bedtime is usually the most convenient time to place it.

Some tips for inserting a boric acid suppository are:

  • Always consult a healthcare provider for frequency, dosage, and questions.
  • Using one suppository per day may be beneficial for treating chronic infections.
  • For acute infections, inserting the capsules twice every day for 6 to 14 days may help.
  • Even if you see rapid improvement – often in less than a day – make sure you complete the course to avoid the recurrence of the infection.

Risks and Side Effects of Boric Acid Suppositories

Boric acid suppositories are usually safe for use in adults with only minor side effects. Some possible side effects are:

  • Discharge after application
  • Redness of vagina
  • Burning sensation at the site of insertion

If you have any severe adverse reactions, stop using the suppositories immediately and talk to a healthcare provider if symptoms persist.


Boric acid suppositories may be the cure you have been searching for to treat recurrent or chronic yeast infections. Discuss this treatment option with a physician before starting use.