Does Baking Soda Help with Bad Breath?

Halitosis, commonly referred to as bad breath, is a widespread issue that can undermine confidence and make social or professional interactions uncomfortable.

To address this, many individuals seek natural methods that are both simple and effective in improving breath freshness. Among the popular choices is baking soda, a low cost household ingredient available in most kitchens.

This raises the question: Is baking soda good for bad breath? Studies indicate that baking soda can neutralize odor producing acids and reduce oral bacteria, offering a natural solution for those aiming to maintain fresher breath.

Baking Soda for Bad Breath: Does It Really Work?

Several recent studies have provided positive evidence regarding the effectiveness of baking soda in improving breath, raising the question does baking soda help with bad breath.

Specifically, a 2024 study showed that rinsing with a baking soda solution was significantly more effective than tongue scraping in reducing halitosis.

The results indicated that many participants experienced a notable improvement in breath freshness after a period of use [1]. In addition, other reviews have reported that baking soda may help balance oral pH and control odor-causing bacteria [2].

Trials with toothpastes containing baking soda have also demonstrated a clear reduction in volatile sulfur compounds, the main culprits behind bad breath [3].

However, some reviews concluded that the current body of evidence is still not strong enough to confirm that baking soda is superior to conventional mouth rinsing methods, suggesting that more clinical studies are needed to draw a definitive conclusion [4].

How Does Baking Soda Work for Bad Breath?

Baking soda helps freshen breath through a few simple mechanisms.

First, it can neutralize acids in the mouth, creating a less acidic environment where odor-causing bacteria are less likely to thrive. Studies have shown that rinsing with sodium bicarbonate significantly increases salivary pH [2].

In addition, baking soda has a mild antibacterial effect, which may help inhibit the growth of certain odor-producing bacteria in the oral cavity [5].

Finally, when used in toothpaste, baking soda also aids in removing plaque and the coating on the tongue, reducing the surfaces where bacteria can accumulate and generate unpleasant odors [6].

Does Baking Soda Help with Bad Breath from the Stomach?

Baking soda for bad breath from the stomach is often mentioned as a quick remedy, but its effectiveness in this specific case remains limited. Baking soda has mild alkalinity, which can neutralize acids in the mouth and reduce the growth of odor-causing bacteria [6].

However, if halitosis originates from the stomach, such as with acid reflux or ulcers, baking soda only works on the surface and does not address the root problem>

Some studies also emphasize that for gastrointestinal-related causes, oral methods like rinsing with baking soda may provide only temporary relief, and current clinical evidence is not strong enough to confirm long-term benefits [7].

To achieve lasting improvement, it is essential to address the underlying stomach condition while maintaining proper oral hygiene.

Ways to Use Baking Soda for Bad Breath

Baking soda can be used in several simple ways to help freshen breath. You can rinse your mouth by dissolving half a teaspoon of baking soda in a glass of warm water and swishing for 1 minute [4].

Another option is brushing with baking soda by mixing a small amount with your regular toothpaste or using a toothpaste that already contains baking soda, as part of normal oral hygiene.

In addition, gently cleaning the tongue with a baking soda toothpaste may help reduce tongue coating, limiting places where odor-causing bacteria can grow.

On Reddit, a user named Runescapegirl420 shared: “Recently I have been using a tongue scraper, then brushing my teeth and after that I take like a spoonful of baking soda and swish it in my mouth with water for about 30 seconds-1min and I feel like it’s helped my BB tremendously.

I’m unsure of how safe it is on the teeth, but I just wanted to share what’s been helping me a bit.”*

Another user, ThinkBig202 also emphasized the effectiveness of combining baking soda with tongue cleaning: “Try cleaning your tongue better. Baking soda does a great job at cleaning the mouth, especially the tongue.

The tongue has many places where bacteria can hide. If you can safely clean your tongue while getting into those deep groves, you’ll improve your breath and have a clearer tongue more consistently.

Lots of people say they clean their tongue, but chances are they are not doing a good enough job. Figure out the best way for you to ‘self deep clean’ your tongue at home.”*

While these methods are safe when used moderately, overuse should be avoided to reduce the risk of irritation.

Safety and Precautions

Do Not Swallow Baking Soda

Baking soda mouth rinses are intended for external use only. Swallowing the solution may upset the stomach, and in certain cases improper use of sodium bicarbonate has been linked to serious effects such as stomach rupture or changes in electrolyte balance [8].

Always spit out the rinse after use to minimize risks.

Avoid Overuse

Although baking soda is generally safe and considered low in abrasiveness, experts note that frequent use may still pose risks. According to Healthline, baking soda has a mild abrasive quality.

While the American Dental Association (ADA) considers it safe for enamel and dentin, overuse combined with aggressive brushing or other abrasive ingredients could contribute to enamel wear and gum irritation [9].

This is why moderation is recommended for safe and effective use.

Consult A Doctor If You Have Health Conditions

If you have underlying medical conditions, it is best to seek professional advice before using baking soda for oral care.

People with conditions such as high blood pressure, kidney disease, or urinary problems should consult a healthcare provider, as baking soda may interact with certain medications and could pose risks for individuals with kidney or liver issues [10,11].

Consulting a doctor or dentist ensures safe use and helps limit unwanted interactions.

Conclusion

So, does baking soda get rid of bad breath? Research suggests that it can play a supportive role by neutralizing acids, reducing odor-causing bacteria, and helping to freshen breath when used in moderation.

However, its benefits are mostly limited to the mouth and may not address bad breath caused by deeper issues such as stomach problems.

While baking soda is safe for most people when used correctly, it should not replace proper oral hygiene or professional care. For lasting results, combine it with healthy habits and consult a dentist if bad breath persists.