Can Listerine go bad?

In this short article, we will provide an answer to the question “can Listerine go bad?” and detail about cosmetic and therapeutic mouthwash.

Can Listerine go bad?

No, Listerine does not go bad in general but has an expiration date. It is important to understand how to use mouthwashes that have an expiry date on them. According to the FDA and the American Dental Association, they are of a medicinal or aesthetic nature.

Cosmetic Mouthwash

If you choose to use this kind of mouthwash, it may be able to help you conceal foul breath. Even though this is a significant step forward, it does not take into consideration dental issues such as gum disease, loss of tooth enamel, tooth decay, plaque accumulation, and dry mouth. If you’re searching for a mouthwash that may assist you in the control or repair of specific issues, consider using a therapeutic mouthwash to aid you in that endeavor.

Because cosmetic mouthwashes are not regulated by the FDA, you should constantly be on the lookout for expiry dates on the bottles you use for mouthwash. The longer a cosmetic mouthwash is allowed to lie on a bathroom shelf, the more likely it is that its quality will deteriorate.

Therapeutic Mouthwash

Among the chemicals used in FDA-approved therapeutic mouthwash are active ingredients that are controlled by the FDA. These include fluoride, peroxide, essential oils, cetylpyridinium chloride, and chlorhexidine, among others.

Keep an eye on the expiry date on that bottle of therapeutic mouthwash in case you happen to have one on hand at the moment. If the bottle is approaching the end of its useful life, the active components have probably begun to lose their efficacy.

That is problematic since it is difficult to determine whether mouthwash is safe to use by subjecting it to the same procedures used to determine whether milk has passed its sell-by date. To keep your mouthwash effective for as long as possible, the only thing you must do is recognize that if you use it beyond the expiry date, it will no longer operate at its maximum effectiveness.

Does it matter if your mouthwash has beyond its expiry date if you use it?

When it comes to mouthwash therapy, fluoride is an absolute must-have. According to the findings of the research, the soluble fluoride content in the toothpaste dropped with time, making it less efficient in the battle against cavities. Fluoride is fluoride, regardless of whether or not this page is about mouthwash.

Maintaining the efficacy of your mouthwash by storing it in a cold, dry, and dark location, such as your medicine cabinet, is important. Mouthwash has a much longer shelf life than milk, which is a significant advantage. The shelf life of mouthwash will be between two and three years, depending on how it is stored and how it is used.

Make careful to use the mouthwash before the expiry date printed on the container to avoid an oral health problem. If you believe you may need a replacement, consult with your dentist right away. Always use care while driving. If you use the most recent batch of mouthwash available, you have a greater chance of keeping your mouth healthy and cheerful.

Do you believe that mouthwash may be used for an extended time?

Mouthwash has a shelf life of about two years from the date of production in most cases. Mouthwash has a shelf life of three years from the date of production, which is the same as that of other alcohol-based products. The most often seen mouthwashes include alcohol or an antibiotic. Alcohol is the main active ingredient in mouthwashes, although it accounts for only a tiny proportion of the overall volume. After two to three years, the antiseptic will begin to lose its effectiveness. Because so much more water will be added to the mouthwash containing the dissolving antiseptic, the likelihood of bacterial development will increase.


  • All mouthwashes, regardless of whether or not they have an expiry date, have a shelf life.
  • Relevant data indicates that safety and effectiveness testing has been completed, thus indicating that the product’s age may be taken into account when making a decision. You should adhere to it, and that is how it operates.
  • Even if the products do not have an expiry date on them, they will expire. Check to check when the bottle was bought and keep an eye out for any changes in the appearance, smell, or texture of the container.
  • Applying out-of-date mouthwash may not only fail to assist with oral health issues, but it may make them worse by increasing the number of bacteria present.


In this short article, we provided an answer to the question “can Listerine go bad?” and detail about cosmetic and therapeutic mouthwash.


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