Boric Acid Suppositories: Side Effects to Be Aware Of

Boric acid suppositories are becoming increasingly popular for addressing vaginal health concerns, and you may have seen them recommended online or on social media platforms like TikTok. So, it’s only natural to wonder about their side effects and whether they’re safe to use. Let’s dive into what boric acid suppositories are, how they work, and their potential side effects.

Key takeaways

• The most common side effects of boric acid suppositories are temporary, mild vaginal irritation (burning, itching, or redness) and an increase in watery discharge. Serious harm is rare and almost exclusively linked to accidental ingestion, not vaginal use.
• Avoid boric acid if you’re pregnant or breastfeeding, have open vaginal sores or wounds, or have a known allergy to boric acid. 
• Avoid sex during treatment. Boric acid can degrade condoms and diaphragms and cause penile irritation. 
• Call a provider if irritation worsens or persists, you notice significant bleeding, or symptoms don't improve after completing a course. 
• Call poison control (1-800-222-1222) immediately if a suppository is accidentally swallowed. 

What are boric acid vaginal suppositories?

Boric acid is a naturally occurring compound derived from boron. In medicine, it’s been used for decades as an antifungal and antibacterial agent. Boric acid suppositories are capsules inserted into the vagina to help restore balance and relieve symptoms of recurrent bacterial vaginosis (BV) or vaginal yeast infections.

Boric acid suppositories are often recommended for women who experience recurring vaginal infections that don’t respond well to standard treatments. They work by:

• Balancing vaginal pH levels, which can help create an environment less conducive to harmful bacteria and yeast.
• Addressing symptoms like itching, vaginal odor, and unusual discharge caused by bacterial vaginosis or vaginal yeast infections.

These suppositories are considered a supplemental treatment, so they’re not typically a first-line option, but they can be especially useful for women dealing with chronic or frequent infections.

Dangers and side effects of boric acid suppositories

While boric acid is generally safe when used as directed, like all treatments, it’s not without potential side effects. 

Normal side effects to expect

Some women may experience:

• Mild skin irritation: Burning, itching, or redness in the vaginal area can occur, especially if you’re sensitive to boric acid or use it too frequently. It can also cause irritation for a male partner, so you should abstain from unprotected sexual intercourse while using boric acid suppositories and for a few days after finishing treatment. 
• Watery vaginal discharge: Some women notice an increase in vaginal discharge after using suppositories. This is usually harmless and temporary. Consider inserting a boric acid vaginal suppository before going to sleep to minimize leakage, or wear a panty liner during the day.

These effects are usually temporary, but if they persist or worsen, it’s important to stop use and consult a healthcare provider. 

Severe risks and toxicity

More serious risks arise from improper use. Boric acid is toxic when ingested, and even small amounts can be dangerous if swallowed, especially for children and pets. It should never be taken by mouth. Toxicity risks include:

• Nausea, vomiting, or diarrhea if ingested
• Skin rashes or peeling with prolonged exposure
• Organ damage in cases of significant ingestion or overuse. 

Though rare, some individuals may have an allergic reaction to boric acid, leading to increased discomfort or inflammation. If this happens, discontinue use and consult your doctor.

Contraindications and unsafe scenarios

You shouldn’t use boric acid if you’re pregnant or breastfeeding, as boric acid may be harmful during pregnancy. 

Additionally, if you have open sores or wounds in the vaginal area, using boric acid may cause vaginal irritation or worsen symptoms. It’s also worth mentioning that boric acid may damage condoms and diaphragms and might make vaginal spermicides less effective. It’s best to abstain from sex while using boric acid suppositories.

Although boric acid suppositories are considered safe when used correctly, it’s always a good idea to consult your doctor before using them. Do not use boric acid suppositories if you:

• Are pregnant (boric acid may pose risks to the developing fetus)
• Have open sores or wounds inside the vagina
• Are using them as a replacement for prescribed antibiotics or antifungals
• Have an allergy to boric acid. 

Are boric acid suppositories safe? 

Yes, boric acid is generally safe when used correctly. Data shows that only around 10% of people experience side effects from boric acid suppositories.

Boric acid is toxic if ingested orally, so you should keep suppositories out of reach of children and avoid using them orally under any circumstances. For that reason, it’s also best to avoid receiving oral sex while using boric acid and for a few days after finishing the treatment. Call poison control at 1-800-222-1222 if you accidentally ingest a boric acid suppository.  

Safety of Evvy’s Pure Boric Acid Suppositories

While many boric acid suppositories are available over the counter (OTC), not all are created equal. OTC boric acid is often sold as a homeopathic product, meaning the U.S. Food and Drug Administration (FDA) hasn’t evaluated its safety and effectiveness. That’s why we launched our Pure Boric Acid Suppositories. 

They’re produced in a 503a NABP-accredited pharmacy, guaranteeing prescription-grade quality that you won't find over the counter. They contain an optimal dosage of boric acid and, unlike some over-the-counter products, are free from unnecessary fillers or additives. This formulation is gentle on sensitive skin, maximizing effectiveness while minimizing side effects.

How to use boric acid safely

If you’re considering boric acid, following your healthcare provider’s instructions or the directions on the product label is essential. Typically, you’ll insert one vaginal suppository at bedtime for several days, depending on the issue being treated. Avoid using boric acid longer than recommended, and if symptoms persist, consult your doctor.

FAQs about boric acid suppository side effects

What are the negatives of boric acid suppositories?

Boric acid suppositories can help with various vaginal concerns, but there are some downsides to consider. Common side effects include mild irritation, such as burning or itching, and an increase in watery discharge. Boric acid can also break down condoms and diaphragms and may cause penile irritation, so it's best to avoid sex while using it. Although allergic reactions are rare, they can occur. It's crucial to keep boric acid out of reach of children, as it is toxic if swallowed. Boric acid isn't the right choice for everyone. Pregnant women should steer clear of it since it could harm the developing baby. Also, if you have any open wounds or sores down there, you’ll want to avoid using it, as it can irritate those areas further. Lastly, using boric acid too often or incorrectly can upset the natural balance of your vaginal microbiome, which might make things worse instead of better. If your symptoms don’t improve or seem to get worse, it’s a good idea to stop using it and check in with your healthcare provider. 

What dangers are associated with boric acid suppositories?

Boric acid suppositories are generally safe and well-tolerated when used vaginally and exactly as directed. They're a popular option to treat vaginal yeast infections or bacterial vaginosis, especially when other treatments haven’t worked, or infections keep coming back. That said, like with any treatment, side effects are possible, though serious reactions are rare. Using too many suppositories or not following instructions could increase the risk of mild irritation or, in very rare cases, systemic side effects like nausea or skin rash. It’s important to remember: boric acid is toxic if swallowed, so it should only be used vaginally. If you notice persistent burning, unusual discharge, or feel unwell, it's a good idea to check in with your healthcare provider. When used correctly, boric acid suppositories can be a safe and effective part of your vaginal health toolkit.

Can boric acid suppositories cause bleeding?

Boric acid vaginal suppositories can sometimes cause a little irritation or discomfort, but bleeding isn't a typical side effect. If you have any existing issues like vaginal tears, sores, or infections, using boric acid might make those problems a bit worse and could lead to some bleeding. However, if you notice any significant or ongoing bleeding, it’s a good idea to check in with a healthcare provider, as it might point to an underlying issue like an infection or a reaction to the product. If you experience noticeable bleeding or any concerning symptoms while using boric acid suppositories, it's best to stop using them and reach out to a healthcare professional for advice.

What to expect after inserting boric acid?

After inserting a boric acid vaginal suppository, you might notice some mild, temporary changes, like an increase in vaginal discharge. This discharge is usually watery and clear, or maybe slightly white. Some women also feel mild irritation or a slight burning sensation, especially if the area is already a little sensitive, but this should pass quickly. For the best results, use the suppositories at bedtime. This way, they can work overnight while minimizing any chance of leakage. If you find that irritation continues or your symptoms seem to get worse, it’s always a good plan to stop using them and check in with your healthcare provider.

When should you not use boric acid suppositories?

You should avoid boric acid if you're pregnant or breastfeeding, as it can be harmful to a developing baby. Additionally, steer clear of using them if you have any open wounds or sores in the vaginal area, since that might cause irritation or discomfort. If you notice any allergic reactions or feel significant discomfort after using boric acid, please stop using it right away and reach out to a doctor. Remember, boric acid should never be taken by mouth, so it's essential to keep it out of reach of children or anyone who might accidentally swallow it. When in doubt, just check in with your doctor to see if boric acid is right for you.

Can boric acid suppositories harm you?

When used correctly and vaginally, boric acid suppositories are generally safe and well-tolerated. Harm is unlikely unless they're overused, used during pregnancy, or accidentally swallowed, since boric acid is toxic if ingested. As long as you follow the instructions and avoid oral use, serious side effects are rare.

Do gynecologists recommend boric acid suppositories?

Yes, many gynecologists do recommend boric acid suppositories, especially for people dealing with recurring yeast infections or bacterial vaginosis that haven’t responded to standard treatments. They’re considered a helpful, evidence-backed option when used under medical guidance.

Can boric acid suppositories cause cramping?

Cramping isn't a commonly reported side effect of boric acid suppositories, but some people do experience mild pelvic discomfort or a sensation of pressure after insertion, particularly if the vaginal tissue is already inflamed or sensitive. This is usually short-lived and settles once the suppository dissolves. If you experience significant cramping, pain that doesn't ease within a few hours, or cramping alongside fever or unusual bleeding, stop use and contact your healthcare provider. 

Can boric acid cause a UTI or make a UTI worse?

Boric acid suppositories are inserted vaginally and aren't designed to treat the urinary tract, so they won't resolve a UTI. There's no strong evidence that vaginal boric acid directly causes UTIs, but the proximity of the vaginal opening to the urethra means that any local irritation or disruption to the vaginal microbiome could theoretically affect urinary tract health. If you're prone to UTIs and notice symptoms while using boric acid, pause treatment and speak to your provider. 

How long do boric acid suppository side effects last?

Mild side effects like watery discharge, irritation, or a slight burning sensation typically resolve within a day or two of finishing treatment. If you notice discomfort during the course itself, it usually eases between doses. Side effects that persist beyond a few days after completing treatment, or that worsen at any point, are a sign to stop use and check in with your provider.