Skip to content
4.8
Rated 4.8 out of 5 stars
5,020 Reviews

The Killer® Boric Acid Suppositories

Personal Care · 14 suppositories

A boric acid vaginal suppository for fresh vaginal odor. See ingredients

    • Save 50% first month, then 25% for life
    • Free shipping on all U.S. orders $45+
    • Modify or cancel at any time
DETAILS HOW TO USE INGREDIENTS
  • Meet The Killer, our best-selling boric acid suppository that promotes fresh vaginal odor
  • Feel confident with our single-ingredient suppository that never includes fragrance or essential oils, two types of ingredients we don't believe belong in women's wellness solutions
  • Won't disrupt your healthy vaginal pH levels
  • This odor control must-have is clinically proven as safe for skin
read FAQS
  • With clean hands, insert 1 suppository into the vagina at bedtime daily as needed or for up to 14 days.
  • Expect some discharge over the course of the night (we like to wear a thin pad to protect our undies) but understand that this is normal.
  • Avoid sexual intercourse when using this product. You should always insert after you have fully emptied your bladder, especially after sexual intercourse.
  • If using The Killer® along with Flora Power™ we recommend using The Killer® first for anywhere between 1-14 days, depending on your body's needs, and then Flora Power™ for up to 5 days. You'll want to use just one suppository at a time and complete a run of one product before moving onto the next.
  • Gluten-Free & Dairy-Free
  • 600mg Boric Acid, Gelatin Capsule
VIEW SUPPLEMENT FACTS
The Killer® Boric Acid Suppositories
4.8
Rated 4.8 out of 5 stars
5,020 Reviews

Why We Made The Killer®

Old school solutions weren't cutting it, so we teamed up with experts in 2016 to bring you our incredibly popular boric acid suppository for fresh vaginal odor. The Killer is formulated with just one, powerful ingredient: boric acid. It provides fast support and unlike other brands is made without fragrance or essential oils, two ingredients we don't believe belong in a woman's care routine.

Formulated for peace of mind

  • Traceable non-GMO ingredients

  • No fragrance or essential oils

  • Part of a
    Biome-Positive™️ routine

  • Safe for skin

We’re here to support you

  • Promotes Fresh Vaginal Odor
  • Confidence Booster
  • Fast-Acting, Single-Ingredient Suppository
  • Fragrance-Free
  • Promotes Fresh Vaginal Odor
  • Confidence Booster
  • Fast-Acting, Single-Ingredient Suppository
  • Fragrance-Free
  • Promotes Fresh Vaginal Odor
  • Confidence Booster
  • Fast-Acting, Single-Ingredient Suppository
  • Fragrance-Free

Made with only thoughtful ingredients

Fragrance-free GMO-Free

Made with only thoughtful ingredients

Boric Acid
Boric Acid comes from a mineral in sea water and is known for promoting fresh vaginal odor.

The Killer® FAQs

The Killer, made of boric acid, is a vaginal suppository designed to help you feel confident by controlling vaginal odor. 

Boric acid has been used for over a hundred years for vaginal odor control.

The Killer is a vaginal suppository — not a pill you take by mouth. We know it looks similar, but this will be inserted vaginally. 

To use: Wash your hands well to gently insert The Killer with your fingers into your vagina. It should be inserted a comfortable amount, which should be far enough that it won't have the chance to slip out. There is no need to alter the capsule in any way. Just pop it in — that's it! Within a few hours, the capsule will start to dissolve and get to work.

Discharge is expected when using a vaginal suppository, so we recommend wearing a panty liner to help keep you clean.

We recommend using it at bed time so it can be one less thing you have to worry about during the day as it can cause discharge.

How long you use The Killer depends on your body and your needs. You can use The Killer for as little as 1-3 days or for as long as 7-14 days (an entire box). We recommend use of only one suppository every 24-hour period.

The Killer is all about odor control and will be based on each individual. Depending on your body and needs, you may see results in as little as one day or up to five days.

Yes, we love using The Killer to help control and promote fresh vaginal odor.

No — The Killer is a vaginal suppository and is meant to only be inserted into the vagina. Do not insert The Killer into any other part of your body.

The Killer is not vegan due to the gel capsule, but it is both gluten-free and dairy-free.

There are many different types of acids with ranging levels of pH (or potential of hydrogen, which is the measurement used to determine acidity). Many acids are “weak acids,” meaning they are safe to use. Common things in your house that contain weak acids are coffee, vinegar, and lemons.

Similarly, boric acid is a very weak acid and has many health and wellness uses, so don’t be scared by its name! The Killer was formulated by a medical doctor and is manufactured with pharmaceutical-grade boric acid in our FDA registered facility according to CGMP standards – meaning, it’s safe to use as directed!

We recommend waiting until the end of your period (or almost the end) before beginning to use The Killer.

We recommend waiting 24-48 hours after using The Killer before having sex.

Given that everyone is different and unique to their health, we recommend checking in with your doctor to make sure there are no interfering or contradicting ingredients between your birth control and The Killer.

The Killer is not approved for use if you are pregnant or breastfeeding. Please consult with your doctor to see which products may be most suitable for use while you are pregnant or breastfeeding.

For complete vaginal care, we recommend pairing The Killer® with:

If using The Killer® with Flora Power™, you'll want to complete use of The Killer first, wait 1-2 days, then using Flora Power™.


As always, anytime you add anything new to your regimen, we recommend checking in with your doctor/healthcare provider to ensure it makes sense for you, and they can answer any more specific questions you might have!

VIEW MORE FAQS

Real people, real reviews

4.8
Rated 4.8 out of 5 stars
5,020 Reviews
4.8
Rated 4.8 out of 5 stars
Based on 5,020 reviews
96%would recommend this product
Total 5 star reviews: 4.5k Total 4 star reviews: 304 Total 3 star reviews: 80 Total 2 star reviews: 45 Total 1 star reviews: 94
5,020 reviews
  • Kandise T.
    Verified Buyer
    I recommend this product
    How old are you? 35-44
    This helped with Odor, Overall vaginal health, Imbalanced pH
    Do you subscribe to this product? Yes
    Would you recommend to a friend? Yes (duh!)
    Rated 5 out of 5 stars
    12 seconds ago
    Works

    Makes me feel fresh when I'm feeling not so fresh 😅

  • Karen D.
    Verified Buyer
    I recommend this product
    How old are you? 18-24
    This helped with Odor, Imbalanced pH
    Do you subscribe to this product? No
    Would you recommend to a friend? Yes (duh!)
    Rated 5 out of 5 stars
    3 hours ago
    it workkk

    it help a lot w my odor

  • CC
    Verified Buyer
    I recommend this product
    How old are you? 35-44
    This helped with Odor, Urinary tract health
    Do you subscribe to this product? Yes
    Would you recommend to a friend? Yes (duh!)
    Rated 5 out of 5 stars
    2 days ago
    Using For Years

    Works great! I’ve used it a while.

  • Hannah G.
    Verified Buyer
    I recommend this product
    Do you subscribe to this product? No
    Would you recommend to a friend? Yes (duh!)
    Rated 5 out of 5 stars
    2 days ago
    Great

    I didn’t need them but it was nice to try

Reviews LoadedReviews Added

The Perfect Match

Discover complementary products.

6,359 Reviews
Good Girl Probiotics®
  • Maintains urinary tract health*
  • Balances vaginal & pH bacteria*
  • Benefits immune system*
LEARN MORE
6,359 Reviews
Good Girl Probiotics®
back
3,992 Reviews
pH Balancing Cleanser™
  • Gentle vaginal cleanser
  • Fragrance-free
  • No Harsh Ingredients
LEARN MORE
3,992 Reviews
pH Balancing Cleanser™
back
244 Reviews
Flora Power® Vaginal Probiotic Suppositories
  • Balanced Vaginal pH pH
  • Fragrance-Free
  • Vaginal Suppository
LEARN MORE
244 Reviews
Flora Power® Vaginal Probiotic Suppositories
back
2,428 Reviews
Healthy V® Vitamin
  • Supports vaginal tract health*
  • Gives immunity a boost*
  • Supports a healthy vagina*
learn more
2,428 Reviews
Healthy V® Vitamin
back
Developed
by doctors

Advised by industry professionals

We know your health is important to you. That’s why we’ve comprised a team of specialists to consult, advise, and support us in the creation of our products.