Does Zinc Supplement Help with Chronic Bad Breath? - Dentistry

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Is taking zinc tablets effective for bad breath?


Hello Doctor: I have been suffering from bad breath for many years.
I have undergone examinations in dentistry, oral medicine, gastroenterology, and otolaryngology, and all results were normal.
I do not have periodontal disease and I regularly get my teeth cleaned and see the dentist.
However, even after brushing my teeth and using mouthwash, the bad breath (which has a foul odor) persists, although there is no bad smell when I exhale through my nose.
A friend suggested that I take zinc supplements.
I would like to ask if this medication (or supplement) is effective? Based on your experience, what treatment do you recommend? I really want to get rid of this issue as it makes it difficult for me to socialize and make friends.
It has been very frustrating for my work, and I feel isolated and depressed every day.

Guniang, 40~49 year old female. Ask Date: 2014/09/24

Dr. Zeng Guanghui reply Dentistry


The causes of halitosis can be divided into oral-related factors and systemic factors.
Poor oral hygiene, plaque accumulation, dental caries, and periodontal disease can all contribute to oral odor.
Additionally, inadequate saliva production, xerostomia, and poor oral self-cleansing ability may also lead to halitosis.
Gastrointestinal discomfort, gastroesophageal reflux, and immune system disorders can also cause oral odor.
It is advisable to consult a dentist for a thorough examination.

Reply Date: 2014/09/24

More Info


Chronic bad breath, or halitosis, can be a distressing condition that significantly impacts one's social interactions and self-esteem. It is commendable that you have sought help from various specialists, including dental, gastrointestinal, and ENT doctors, and have ruled out common causes such as periodontal disease. The persistent nature of your symptoms, despite good oral hygiene practices like regular brushing and using mouthwash, suggests that the issue may not be solely related to oral health.

Zinc supplements have been suggested as a potential remedy for bad breath. Zinc is known to play a role in oral health, as it has antibacterial properties that can help reduce the number of bacteria in the mouth, which are often responsible for producing foul odors. Some studies have indicated that zinc can help neutralize volatile sulfur compounds (VSCs), which are commonly associated with bad breath. These compounds are produced by bacteria that break down food particles in the mouth, particularly proteins. Therefore, taking zinc supplements may help reduce the bacterial load and subsequently improve breath odor.

However, it is essential to note that while zinc may provide some benefit, it is not a guaranteed solution for everyone. The effectiveness of zinc supplements can vary based on individual factors, including the underlying cause of the bad breath. If the source of your halitosis is not related to oral bacteria, zinc may not address the problem effectively. Additionally, excessive zinc intake can lead to side effects such as nausea, diarrhea, and interference with the absorption of other essential minerals like copper.

Given your situation, it may be beneficial to explore other potential causes and treatments for your chronic bad breath. Here are some suggestions:
1. Dietary Considerations: Certain foods, such as garlic, onions, and spicy dishes, can contribute to bad breath. Additionally, a diet low in carbohydrates can lead to ketosis, which may also produce a foul odor. Consider keeping a food diary to identify any dietary triggers.

2. Hydration: Dry mouth (xerostomia) can exacerbate bad breath, as saliva helps wash away food particles and bacteria. Ensure you are drinking enough water throughout the day. Chewing sugar-free gum or sucking on sugar-free candies can stimulate saliva production.

3. Oral Hygiene Products: While you mentioned using mouthwash, consider using products specifically designed to combat bad breath. Look for mouthwashes containing chlorhexidine or cetylpyridinium chloride, which can be more effective against odor-causing bacteria.

4. Regular Dental Check-ups: Continue with regular dental visits, as your dentist can help identify any hidden issues that may contribute to bad breath, such as cavities or infections.

5. Underlying Medical Conditions: Since you have consulted various specialists, it may be worth revisiting your healthcare provider to discuss the possibility of underlying conditions such as sinus infections, gastrointestinal reflux disease (GERD), or other systemic issues that could contribute to halitosis.

6. Mental Health Support: The emotional toll of dealing with chronic bad breath can lead to anxiety and depression. Seeking support from a mental health professional can be beneficial in addressing these feelings and improving your overall well-being.

In conclusion, while zinc supplements may offer some benefit in managing chronic bad breath, they should not be viewed as a standalone solution. A comprehensive approach that includes dietary adjustments, enhanced oral hygiene practices, and ongoing medical evaluation is essential. If you decide to try zinc, consult with your healthcare provider to ensure it is appropriate for your situation and to discuss the correct dosage. Your health and comfort are paramount, and finding a solution to your condition is possible with the right support and strategies.

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