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Homemade Anti-Cavity Rinse

During a recent check-up with a patient, Dr. Bruce Marshall dug up the following recipe for a homemade anti-cavity rinse that we previously posted in January 2015.

Many people do not like the harsh strong taste of commercial mouthwash; plus the cost can be very expensive. We found a formula for pH balancing mouthwash you can make right at home.

Directions for Use:

  • Rinse for 45-60 seconds and spit
  • Rinse immediately following acidic or highly sugary meals/snacks (if you brush after meals do this first)
  • Please remember that with any mouthwash avoid swallowing while gargling


  • 8 ounces tap water
  • 1 teaspoon baking soda
  • 20 drops peppermint oil (or another essential oil to taste – peppermint works best)
  • Optional: 5 teaspoons Xylitol for sweetness (you can find this online or at a local health store)
  • Warning: Xylitol is poisonous to dogs, so be careful
  • Note: these instructions will make 1 cup of an alkaline mouthwash at home (~pH 8)

Homemade rinses like this don’t have any of the preservatives you’ll find in store bought rinses, and the baking soda in the re-balancing rinse is converted to sodium carbonate after a few days at room temperature. Sodium carbonate is still alkaline, but baking soda is a bit more gentle of an ingredient. If you want your re-balancing rinse fresh, only mix enough at one time to last you 3-4 days.


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