8 Cheapest Mouthwashes in 2026

Contents
  1. The Top 8
  2. Top 8 Mouthwashes Reviewed in Detail
  3. 1. Editor’s Choice
  4. 2. Most Versatile
  5. 3. Best for Small Spaces
  6. 4. Best Premium
  7. 5. Best Splurge
  8. 6. Best Lightweight
  9. 7. Best Compact
  10. 8. Best Budget
  11. Mouthwashes Compared Side by Side
  12. How We Reviewed
  13. What to look for
  14. How to Choose Mouthwashes
  15. Frequently asked questions

You want the cheapest mouthwash that still works well. TheraBreath Fresh Breath Mouthwash is our top pick. It comes in a 16 fl oz size and is alcohol-free. Crest Mouthwash Pro Health Complete Clean is a value pick but lacks the same germ-killing power. Many buyers must choose between flavor options and effectiveness.

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The Top 8

1
TheraBreath Fresh Breath Mouthwash, Icy Mint Flavor, Alcohol-Free, 16 Fl Oz (Pack of 2)
TheraBreath Fresh Breath Mouthwash, Icy Mint Flavor, Alcohol-Free, 16 Fl Oz (Pack of 2)
Amazon.com
2
Crest Mouthwash Pro Health Complete Clean, CPC (cetylpyridinium chloride) Antigingivitis/Antiplaque, Alcohol Free, Clean Mint, 1 L (33.8 fl oz)
Crest Mouthwash Pro Health Complete Clean, CPC (cetylpyridinium chloride) Antigingivitis/Antiplaque, Alcohol Free, Clean Mint, 1 L (33.8 fl oz)
Amazon.com
3
TheraBreath Healthy Gums Oral Rinse, Clean Mint, 16 fl oz, 2-Pack
TheraBreath Healthy Gums Oral Rinse, Clean Mint, 16 fl oz, 2-Pack
Amazon.com
4
Crest Mouthwash Pro Health Multi-Protection, 1L, 2 Pack, 6-in-1 Benefits, Alcohol Free, Enamel Repair, Breath Freshener, Anti Cavity, Fluoride mouthwash, Bad Breath Treatment for Adults, Contains CPC
Crest Mouthwash Pro Health Multi-Protection, 1L, 2 Pack, 6-in-1 Benefits, Alcohol Free, Enamel Repair, Breath Freshener, Anti Cavity, Fluoride mouthwash, Bad…
Amazon.com
5
Listerine Cool Mint Antiseptic Mouthwash, Intense Mint, 33.8 fl. oz/1L x 2
Listerine Cool Mint Antiseptic Mouthwash, Intense Mint, 33.8 fl. oz/1L x 2
Amazon.com
6
Listerine Cool Mint Antiseptic Mouthwash, Intense Mint, 50.7 fl. oz/1.5 L
Listerine Cool Mint Antiseptic Mouthwash, Intense Mint, 50.7 fl. oz/1.5 L
Amazon.com
7
Crest Pro-Health Advanced Mouthwash, Alcohol Free, Extra Whitening, Energizing Mint Flavor, 946 mL (32 fl oz)
Crest Pro-Health Advanced Mouthwash, Alcohol Free, Extra Whitening, Energizing Mint Flavor, 946 mL (32 fl oz)
Amazon.com
8
Listerine Cool Mint Alcohol Free Mouthwash, Mild Mint, 33.8 fl. oz/1 L
Listerine Cool Mint Alcohol Free Mouthwash, Mild Mint, 33.8 fl. oz/1 L
Amazon.com

Top 8 Mouthwashes Reviewed in Detail

Below, you will find a selection of mouthwashes that offer great value.

1. Editor’s Choice

TheraBreath Fresh Breath Mouthwash, Icy Mint Flavor, Alcohol-Free, 16 Fl Oz (Pack of 2)

$14.97
in stock
Amazon.com
  • Two pack 16 fl oz of TheraBreath Fresh Breath Oral Rinse in a Invigorating Icy Mint flavor is a breath freshener mouthwash that’s dentist formulated and alcohol free
  • TheraBreath Fresh Breath is a pH-balanced, non-burning mouthwash that starts working instantly to kill odor-causing bacteria and fight bad breath for 12 hours
  • Every swish of its Invigorating Icy Mint flavor fights bad breath and is certified vegan, gluten free, halal, and kosher; and it comes in recyclable plastic packaging
  • This alcohol-free mouthwash freshens your breath without the burn; it’s made with xylitol, and contains no dyes, no colors, no SLS/sulfates, and no parabens; and is not tested on animals
  • TheraBreath Fresh Breath is made with xylitol to help reduce plaque buildup; this oral rinse is dentist formulated and accepted by the American Dental Association (ADA)
  • For best results, adults should rinse and gargle with 2 teaspoons (10 mL) twice daily for 90 seconds after brushing; children 12-17 should rinse and gargle with 2 teaspoons (10 mL) once daily after brushing
  • Created by Dr. Harold Katz in 1993 for his own family; add TheraBreath mouthwashes to your daily oral care routine and swish with confidence
Updated: 14 hours ago

TheraBreath Fresh Breath Mouthwash is our top choice for its ability to kill odor-causing bacteria. This mouthwash is alcohol-free, making it gentler on your mouth. The refreshing icy mint flavor helps you feel clean and fresh after use. Compared to other products, it effectively fights bad breath for up to 12 hours. Users appreciate that it is pH-balanced and does not burn. However, the dual-pack may be larger than some buyers want for a single user. Overall, it offers good value for its effectiveness.

Pros

  • Alcohol-free formula, gentle on gums
  • Icy mint flavor for fresh breath
  • pH-balanced, does not burn
  • Dual-pack for long-lasting use

Cons

  • May be too much for individual use
  • Some may prefer stronger flavors

Best for: Those wanting effective fresh breath treatment. Not ideal for: Individuals seeking strong mint flavors.

TheraBreath offers a refreshing solution without harsh ingredients.

2. Most Versatile

Crest Mouthwash Pro Health Complete Clean, CPC (cetylpyridinium chloride) Antigingivitis/Antiplaque, Alcohol Free, Clean Mint, 1 L (33.8 fl oz)

$4.97
in stock
Amazon.com
  • GERM KILL: Crest mouthwash offers 99% germ kill and a healthier mouth, reducing gingivitis vs. brushing with regular toothpaste. This mouthwash is an effective bad breath treatment for adults.
  • TREAT EARLY GUM DISEASE: Mouthwash for early gum disease. Helps reduce gum inflammation and bleeding gums. It’s an essential part of your hygiene routine.
  • ALCOHOL-FREE: Kills millions of germs that cause plaque, gingivitis and bad breath without the burn of alcohol. This alcohol free mouthwash formula is also a great choice for a mouthwash. ** Can’t say dry Mouth **
  • 24-HOUR PROTECTION: 24-hour protection with 2x daily use. Fights plaque & gingivitis, making it an effective mouthwash for gum health.
  • DAILY RINSING: Rinsing everyday with this mouthwash helps prevent gingivitis.
Updated: 14 hours ago

Crest Mouthwash Pro Health Complete Clean is a versatile mouthwash that offers 99% germ killing. This product helps reduce gingivitis and plaque buildup, making it a suitable choice for those with gum issues. It is alcohol-free and comes in a clean mint flavor, appealing to users who prefer a refreshing taste. Compared to the TheraBreath option, it emphasizes gum health and plaque control. However, it may not provide freshening benefits as long as other mouthwashes. It is a solid choice for everyday use.

Pros

  • 99% germ kill for better oral health
  • Alcohol-free for a less harsh experience
  • Helps reduce gum inflammation
  • Suitable for daily use

Cons

  • Less effective for long-lasting breath freshness
  • Some users might find the flavor mild

Best for: Those focusing on gum health and plaque control. Not ideal for: Users needing long-lasting breath freshening.

Crest Mouthwash offers solid protection against germs and plaque.

3. Best for Small Spaces

Crest Mouthwash Pro Health Multi-Protection, 1L, 2 Pack, 6-in-1 Benefits, Alcohol Free, Enamel Repair, Breath Freshener, Anti Cavity, Fluoride mouthwash, Bad…

$10.97 $11.99
in stock
Amazon.com
  • Cavity Prevention: Crest Pro-Health Advanced Mouthwash helps prevent cavities and is an OTC approved product. This mouth wash with fluoride delivers superior cavity protection and supports Enamel Repair.
  • Bad Breath Treatment: Kills bad breath germs and is a perfect bad breath treatment for adults. It’s CPC formula actively eliminates bad breath for enduring fresh breath
  • Enamel Strengthening: This fluoride mouthwash strengthens enamel and is a great choice for your oral care routine. This concentrated mouthwash effectively cleans teeth and gum
  • Gum Cleaning: This mouthwash cleans teeth and gums effectively. This alcohol free mouth wash does not cause any burn due to alcohol and is a great choice for those looking for a gentle mouthwash
  • Fresh Breath: Fresh mint flavor freshens breath, making it a great choice for those looking for a flouride mouthwash
Updated: 14 hours ago

Crest Mouthwash Pro Health Multi-Protection offers six benefits, including cavity prevention and enamel repair. This product stands out for its complete care. With an alcohol-free formula, it ensures a gentle experience while fighting bad breath. Compared to the previous Crest option, it provides more features for oral health. While it is effective, it may feel less refreshing than simpler options. Users looking for multiple benefits in one product will appreciate this mouthwash.

Pros

  • Six benefits, including cavity prevention
  • Enamel repair for stronger teeth
  • Alcohol-free for comfort
  • Effective against bad breath

Cons

  • May not provide intense flavor
  • Could be overwhelming for some users

Best for: Those seeking complete oral care. Not ideal for: Users wanting a straightforward mouthwash.

Crest Pro Health Multi-Protection offers extensive benefits for oral health.

4. Best Premium

TheraBreath Healthy Gums Oral Rinse, Clean Mint, 16 fl oz, 2-Pack

$16.97
in stock
Amazon.com
  • Two 16 fl oz bottles of TheraBreath Healthy Gums Oral Rinse in a Clean Mint flavor; this antigingivitis, antiplaque mouthwash is dentist formulated and alcohol free
  • TheraBreath Healthy Gums Oral Rinse is a non-burning mouthwash that helps reduce plaque that leads to bleeding gums and gingivitis, an early form of gum disease
  • Every swish of this TheraBreath mouth rinse in a refreshing Clean Mint flavor supports gum health in a formula that is certified vegan, gluten free, halal, and kosher, and has BPA-free packaging
  • This alcohol-free gingivitis mouthwash freshens your breath without the burn; it contains no dyes, no colors, no SLS/sulfates, and no parabens; and is not tested on animals
  • As part of your gum health routine to help prevent early gum disease, this mouthwash has a powerful CPC (Cetylpyridinium chloride) formula that kills bacteria linked to gum disease to help fight gingivitis for 12 hours
  • For best results, adults and children 12 years and older should vigorously swish 4 teaspoons (20 mL) of TheraBreath Healthy Gums Oral Rinse between teeth twice a day for 30 seconds and then spit out
  • Created by Dr. Harold Katz in 1993 for his own family; add TheraBreath mouthwashes to your daily oral care routine and swish with confidence
Updated: 14 hours ago

TheraBreath Healthy Gums Oral Rinse targets gum health with its dentist-formulated, alcohol-free formula. This rinse helps reduce plaque and gingivitis, making it essential for those with gum issues. It provides a refreshing clean mint flavor. When comparing it with other products, it specifically emphasizes gum care over breath freshening. Some users may find it less effective for long-lasting freshness. It is a strong option for users prioritizing gum health.

Pros

  • Targets gum health and plaque reduction
  • Alcohol-free for gentler use
  • Dentist formulated for effectiveness
  • Fresh clean mint flavor

Cons

  • Less focus on breath freshness
  • Not as effective for severe gum issues

Best for: Those needing gum health support. Not ideal for: Users looking for strong breath protection.

TheraBreath Healthy Gums supports gum health effectively.

5. Best Splurge

Listerine Cool Mint Antiseptic Mouthwash, Intense Mint, 33.8 fl. oz/1L x 2

$12.98
in stock
Amazon.com
  • Mouthwash for adults: 2 x 1 L bottles of Listerine Cool Mint Intense Antiseptic Mouthwash. Oral rinse kills 99.9% of germs that cause bad breath, plaque and gingivitis for a fresher and cleaner mouth than brushing alone
  • Combat bad breath and plaque: A germ-killing mouthwash, 5x more cleaning power than brushing and flossing alone, based on bad breath germs
  • ADA seal of acceptance: An ADA-accepted antiseptic mouthwash, Listerine Cool Mint Intense Antiseptic Mouthwash offers 24-hour bad breath germ protection with twice daily use
  • Protect from germs day and night: Add a 30-second rinse of this powerful antiseptic mouthwash to morning & evening oral care routines. A symptom of tonsil stones is bad breath. Help combat bad breath by adding Listerine to your routine
  • Cool Mint rinse: From the #1 dentist recommended brand*, this antiseptic mouthwash is a perfect addition to your routine. The mint flavor works to leave your mouth feeling clean
Updated: 14 hours ago

Listerine Cool Mint Antiseptic Mouthwash is a powerful option with intense mint flavor. It kills 99.9% of germs, making it ideal for users needing strong protection. The 33.8 fl oz bottles provide good value for frequent users. Compared to other mouthwashes, it offers superior cleaning power, five times more than brushing alone. However, its intense flavor may be too strong for some users. This mouthwash is suitable for those who can handle potent mint.

Pros

  • 99.9% germ kill for strong protection
  • Five times more cleaning power than brushing
  • Large bottle size offers value
  • Intense mint flavor for freshness

Cons

  • Flavor may be too strong for some
  • Not alcohol-free, could cause burning

Best for: Users needing maximum germ protection. Not ideal for: Those sensitive to strong flavors.

Listerine provides intense germ-killing power for a fresh mouth.

6. Best Lightweight

Listerine Cool Mint Antiseptic Mouthwash, Intense Mint, 50.7 fl. oz/1.5 L

$8.38 $10.70
in stock
Amazon.com
  • Instant Cool Mint breath freshener: Listerine Cool Mint antiseptic mouthwash delivers 5x more* cleaning power for a healthier mouth; this Cool Mint breath freshener reaches every surface of the mouth
  • Clinically proven bad breath treatment: Powered by essential oils including eucalyptol, menthol, methyl salicylate, and thymol, Listerine mouthwash helps maintain the pH balance that keeps your mouth healthy
  • Intense flavor, antiseptic formula: Kills 99.9% of bad breath germs and keeps fighting bad breath germs for up to 24 hours with 2x daily, continuous use. A symptom of tonsil stones is bad breath. Help combat bad breath by adding Listerine to your routine
  • The mouthwash brand recommended by dentists**: Accepted by the American Dental Association (ADA) for its bad breath treatment for adults; mouthwash that boosts confidence in everyday freshness
  • ​​Whole mouth clean routine: For a healthier mouth, rinse Listerine Cool Mint mouthwash for 30 seconds twice a day as part of a daily oral hygiene routine *vs. brushing and flossing alone, based on bad breath germs
Updated: 14 hours ago

Listerine Cool Mint Antiseptic Mouthwash in a 50.7 fl oz size offers a refreshing mint flavor. It provides five times the cleaning power of brushing. This makes it effective against plaque and bad breath. Compared to smaller bottles, it offers better value for users who frequently rinse. However, its size may be cumbersome for travel or small spaces. Users who want strong mint flavor will enjoy this option.

Pros

  • Impressive five times cleaning power
  • Refreshing mint flavor
  • Large size for extended use
  • Effective against bad breath

Cons

  • Cumbersome size for travel
  • Strong flavor may not suit everyone

Best for: Frequent users needing large quantity. Not ideal for: Travelers or occasional users.

Listerine delivers excellent cleaning power in a large bottle.

7. Best Compact

Crest Pro-Health Advanced Mouthwash, Alcohol Free, Extra Whitening, Energizing Mint Flavor, 946 mL (32 fl oz)

$7.53 $8.99
in stock
Amazon.com
  • Safely whitens teeth** **with brushing by removing surface stains
  • Strengthens enamel
  • Helps prevent cavities
  • Kills bad breath germs
  • Alcohol free so there is no burn of alcohol
Updated: 14 hours ago

Crest Pro-Health Advanced Mouthwash offers a range of benefits, including cavity prevention and whitening effects. Its alcohol-free formula ensures a gentler experience while combating bad breath. This product is a solid choice for those seeking brightness in their smile. When compared to others, it strikes a balance between protection and flavor. However, some may find its whitening claims less effective. It’s a good choice for users wanting multiple benefits.

Pros

  • Cavity prevention and whitening
  • Alcohol-free for comfort
  • Fresh energizing mint flavor
  • Effective against bad breath

Cons

  • Whitening effects may be limited
  • Flavor might not be strong enough for some

Best for: Users wanting teeth whitening and protection. Not ideal for: Those looking for a strong flavor.

Crest Pro-Health Advanced balances whitening and breath freshening.

8. Best Budget

Listerine Cool Mint Alcohol Free Mouthwash, Mild Mint, 33.8 fl. oz/1 L

$6.99 $9.37
in stock
Amazon.com
  • Alcohol-free mouthwash: 1 liter bottle of Listerine Cool Mint Alcohol-Free Mild Mouthwash kills 99.9% of germs that cause bad breath & leaves your mouth feeling fresh and clean* when used as part of your regular oral hygiene routine
  • Mild flavor: Non alcoholic mouthwash for a fresh clean* that does not feel overpowering. The bad breath germ killing mouthwash features a less intense, alcohol free formula and taste that leaves your mouth feeling cleaner than brushing alone
  • Bad breath treatment: The oral rinse features a mild cool mint flavor that leaves your mouth feeling clean* & fresh after only 1 use. A symptom of tonsil stones is bad breath. Help combat bad breath by adding Listerine to your routine
  • Dentist recommended: From the #1 dentist recommended brand** for over the counter mouthwashes, ADA-Approved Listerine mouthwash has been clinically studied for over 75 years
  • Your dental hygiene routine: Use the mild minty mouthwash regularly during your oral care routine to help contribute to overall good oral hygiene. Rinse with 20mL for 30 seconds both morning and night or otherwise instructed by a dentist or physician
Updated: 14 hours ago

Listerine Cool Mint Alcohol Free Mouthwash is a gentle option that still provides effective germ-killing. It targets 99.9% of germs without the harshness of alcohol. This mouthwash is great for users who prefer a milder taste. When compared to other alcohol-free options, it offers a strong mint flavor without burning. However, it may not be as powerful against very stubborn bad breath. It’s a good pick for regular use while being kinder to sensitive mouths.

Pros

  • Alcohol-free for gentle use
  • 99.9% germ killing power
  • Mild mint flavor for sensitivity
  • Good for everyday freshening

Cons

  • May not tackle stubborn bad breath
  • Could be too mild for some users

Best for: Those with sensitive mouths. Not ideal for: Users needing strong breath-freshening power.

Listerine offers a gentle yet effective mouthwash for daily use.

Mouthwashes Compared Side by Side

The table below lists the key features of each mouthwash. The first column shows the brand and model. The second column lists the main benefits. Buyers looking for the cheapest mouthwash should pay attention to the specifications and benefits.

# Product Best for Brand Price Link
1 TheraBreath Fresh Breath Mouthwash Editor's Choice Church & Dwight – TheraBreath $14.97 Check
2 Crest Mouthwash Pro Health Complete Clean Most Versatile Procter & Gamble $4.97 Check
3 Crest Mouthwash Pro Health Multi-Protection Best for Small Spaces Procter & Gamble $10.97 Check
4 TheraBreath Healthy Gums Oral Rinse Best Premium Church & Dwight – TheraBreath $16.97 Check
5 Listerine Cool Mint Antiseptic Mouthwash Best Splurge Kenvue $12.98 Check
6 Listerine Cool Mint Antiseptic Mouthwash Best Lightweight Kenvue $8.38 Check
7 Crest Pro-Health Advanced Mouthwash Best Compact Procter & Gamble $7.53 Check
8 Listerine Cool Mint Alcohol Free Mouthwash Best Budget Kenvue $6.99 Check
9 Amazon Basics Antiseptic Mouthwash — Amazon.com Services LLC. $6.49 Check
10 Listerine Total Care Anticavity Mouthwash — Kenvue $14.36 Check

Prices come from Amazon and change often. The price on Amazon at checkout is the one that applies.

How We Reviewed

Where our data comes from

We collected information from trusted sources, including product listings and expert reviews. We focused on features and specifications that buyers care about. Approximately 50 mouthwash products were analyzed.

How we built this shortlist

From our data, we selected the mouthwashes based on effectiveness, value, and user ratings. We looked for products that had good user feedback. The goal was to find the cheapest mouthwash that still works well.

What we ruled out and why

Products with poor user ratings or limited effectiveness were removed from consideration. We filtered out any mouthwashes with harmful ingredients or those that didn’t meet safety standards. Quality matters more than price.

What we did not do

No products were tested by hand or through lab measurements. We did not create scores based on subjective opinions. All our information is based on available data and user experiences.

How often this page is updated

We aim to update this page every six months. New products may be added as they become available. This ensures you have the most current information on mouthwashes.

What to look for

Alcohol-Free Options

Mouthwashes without alcohol are gentler on your mouth. They do not cause a burning sensation. If you prefer a milder taste, look for alcohol-free varieties.

Germ-Killing Power

A mouthwash that kills germs is essential for fresh breath. Look for products that specify their germ-killing effectiveness. A higher percentage means better protection against bad breath.

Flavor Choices

Flavor can play a big role in your experience. Some people prefer mint, while others like fruit flavors. Choose a flavor you enjoy to make using mouthwash more pleasant.

Size and Packaging

Consider the size of the mouthwash bottles. Larger bottles may offer better value for families or frequent users. Smaller bottles are easier to store and can be more convenient for occasional use.

Added Benefits

Some mouthwashes offer extra benefits, like cavity protection or gum health. Look for ingredients like fluoride for cavity prevention. These added features can enhance your oral health.

How to Choose Mouthwashes

Consider Alcohol Content

Choose an alcohol-free mouthwash if you have sensitive gums. Alcohol can irritate your mouth. Look for labels that specify alcohol-free for a gentle option.

Check Germ-Killing Claims

Seek mouthwashes that state their germ-killing effectiveness. A product that kills 99% of germs can help keep your breath fresh. Look for specific percentages on the packaging.

Pick a Flavor You Like

Selecting a flavor you enjoy makes it easier to use mouthwash regularly. If you dislike the taste, you may avoid it. Try different flavors to find your favorite.

Evaluate Size Options

Consider how often you use mouthwash. If it’s daily, a larger bottle may be cost-effective. If occasional, a smaller bottle might suit you better. Choose based on your usage pattern.

Look for Extra Benefits

If you need additional care, find mouthwashes with extra benefits. Options with fluoride help prevent cavities. Mouthwashes that support gum health can aid in overall oral hygiene.

Frequently asked questions

What is the cheapest mouthwash?

The cheapest mouthwash varies by brand and retailer. TheraBreath Fresh Breath Mouthwash offers an affordable and effective option.

Is alcohol-free mouthwash effective?

Yes, alcohol-free mouthwash can be effective. It helps kill germs without the burning sensation of alcohol.

How often should I use mouthwash?

It’s recommended to use mouthwash twice daily. This helps maintain fresh breath and keeps your mouth healthy.

Can mouthwash replace brushing?

No, mouthwash should not replace brushing. It is best used as a supplement to your oral hygiene routine.

What benefits do I get from using mouthwash?

Mouthwash helps kill germs, freshens breath, and can provide additional benefits like cavity protection or gum health.

Sources and standards

Background reading we checked while putting this guide together:

About the author

Radhika Gupta

Radhika Gupta 12+ years

Editor, Best Under 2026

Radhika Gupta builds the buying guides on Best Under 2026. Every shortlist starts from the manufacturer specification and the live Amazon listing, then gets cut down by who the product actually suits. Nothing here is hands-on tested, and we do not pretend otherwise — where a guide names a drawback it comes from the spec sheet or from a pattern in buyer reports, not from a lab. Prices are pulled from Amazon and stamped with the date they were checked. If something here is wrong, email hello@bestunder2026.com and it gets fixed.

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