Struggling with bad breath and wondering what toothpaste actually works? You’re not alone. Bad breath (AKA halitosis) is common, affecting approximately 50 percent of the adult population.1 So… what’s the best toothpaste for bad breath?
The best toothpaste for bad breath is the one you like and use regularly. More than any magic ingredient, what matters most is good oral hygiene. Brush your teeth properly, consistently, and thoroughly—especially along the gumline. That said, toothpastes with antibacterial agents can help fight the bacteria that lead to bad breath.
Keep reading to learn what causes bad breath, what to look for in a toothpaste, and why brushing technique matters more than which brand of toothpaste you choose.
Bad breath is usually caused by a build-up of bacteria, especially around the gums and tongue. As these bacteria break down food particles, they release a bad smell. However, several lifestyle and health factors may worsen bad breath. Here’s a look at the common culprits and how they contribute to halitosis.
When you don’t brush and floss properly—or skip it altogether—dental plaque and food debris build up between teeth and along the gumline. This becomes a food source for bacteria, which produce foul-smelling gases as they break it down.
When plaque isn’t properly removed through brushing and flossing, it hardens into tartar and inflames the gums—this is the start of gum disease. Inflamed gums become a breeding ground for bacteria, which release volatile sulphur compounds (VSCs)—those are the smelly gases responsible for bad breath.
Saliva plays a big role in washing away bacteria. When you breathe through your mouth—especially during sleep—or have reduced saliva (from dehydration or medications), bacteria thrive and odours intensify.
Sometimes, bad breath starts outside of the mouth. Sinus infections and post-nasal drip can cause mucus to collect at the back of the throat—bacteria feed on this, which can lead to bad breath. Acid reflux is another potential culprit. This is where stomach acid flows back into the oesophagus, causing a sour smell or taste in the mouth.
There’s no single "best" toothpaste to prevent bad breath. But here’s what to look for if fresh breath is your goal.
Formulated with ingredients like stannous fluoride, zinc, or triclosan, these target the bacteria that cause gum disease and bad breath. They help reduce plaque, gum inflammation, and the production of sulphur compounds.
All fluoride toothpastes help prevent tooth decay—but some now offer added benefits like tartar control, enamel strengthening, and freshening agents. They don’t all fight bad breath directly, but they contribute to overall oral health and leave your mouth feeling fresh.
As part of your gum disease treatment, your dentist or periodontist may prescribe chlorhexidine toothpaste. This is an antiseptic agent used to fight bacteria and reduce inflammation in the mouth.
Less saliva = less natural rinsing, which means food particles and bacteria build up in the mouth. Dry mouth toothpastes contain lubricating ingredients that help combat dryness and reduce bad breath. They may also contain antibacterial agents to help control bacteria, and mint or other flavours to freshen breath.
Whitening toothpastes can help remove surface stains from coffee, wine, or smoking. They won’t fix the cause of bad breath, but cleaner-looking teeth can feel fresher. Some also contain breath-freshening ingredients like mint or baking soda. And when your teeth look whiter, you might feel more motivated to take care of them.
Those seeking a holistic approach to oral care may choose toothpaste with natural ingredients. These use essential oils, tea tree oil, and baking soda to help freshen breath and provide antibacterial properties that can help combat bad breath.
It’s important to remember, not all natural toothpastes are equally effective. Some may lack key ingredients needed to prevent tooth decay or strengthen enamel. When choosing a natural toothpaste, look for options that include fluoride or other minerals to help protect against cavities. Avoid harsh chemicals like sodium lauryl sulphate that can irritate sensitive mouths.
Bleeding gums when brushing could be a sign of gingivitis or gum disease—both of which can cause bad breath.
Signs of gum disease include:
There are other causes of bleeding gums and bad breath. A dental check-up can identify the underlying reason.
Short answer: No—but it’s a big part of the puzzle. Toothpaste helps remove plaque and freshen your mouth, but long-term breath freshness needs a combined approach.
Here’s what else can help:
Chewing gum stimulates saliva production, which helps rinse away odour-causing bacteria and removes food particles. Choose sugar-free varieties with xylitol, which also helps prevent tooth decay. Ideal to use after meals when you don’t have your toothbrush handy.
Avoid sugary snacks and heavily processed foods, which feed oral bacteria. Instead, choose crunchy fruits and vegetables that help clean your teeth naturally and stimulate saliva.
Seeing your dentist or periodontist regularly ensures any underlying issues, like gum disease, decay, or infections, are treated early.
Want a refresher on brushing technique? Check out this ADA guide to brushing your teeth.
The best toothpaste for bad breath is the one you enjoy using and use consistently. For the best results, combine your favourite toothpaste with proper brushing technique, regular flossing, and hydration. If you continue to experience bad breath, even after proper brushing, it’s important to consider other factors, such as gingivitis or gum disease. Don’t just put up with bad breath. Book an appointment with your dentist or periodontist to identify the underlying cause.
References
1. Aylıkcı BU, Colak H. Halitosis: From diagnosis to management. J Nat Sci Biol Med. 2013 Jan;4(1):14-23.
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