Can Soda Cause Heartburn?

Soda may cause acid reflux, which can lead to heartburn. Carbonation and ingredients like caffeine may trigger acid reflux. Acidic beverages and citrus juices may also be triggers.

If you have questions about heartburn or acid reflux, please consult your doctor.


What if I want to avoid acid reflux or heartburn?

It’s ok to have foods and drinks that might be acidic, but it’s best to have a balanced diet with variety. To avoid any triggers, check the ingredients list. We list the ingredients we use next to the Nutrition Facts label on our bottles and cans, including caffeine and citrus fruits. This way you can decide what’s best for you and your family.

We also have options you can choose from to help quench your thirst. Try our waters, like smartwater, DASANI or AQUARIUS Purified Water.


What is acid reflux, anyway? What is heartburn?

According to the U.S. Food and Drug Administration (FDA), acid reflux occurs when stomach contents flow back up into your throat. It is uncomfortable and can cause a burning feeling in your chest. This burning feeling is called heartburn.

If you’re worried about either acid reflux or heartburn, please consult your doctor.


Is soda acidic?

You might be wondering about the pH of Coca-Cola or pH of Diet Coke. Soft drinks, in general, range along the pH scale anywhere from 2 to 5.


What is the acidity of Coke products?

Our variety of drinks range in acidity.

For a quick comparison, check out this table. It includes a few examples of beverages and common household items and their typical pH values.

pH is a measure of how acidic water-based substances are. It runs on a scale from 0 to 14.

  • 0 to 6 being the most acidic
  • 7 being neutral
  • 8 to 14 being the most alkaline

For reference:

  • Regular black coffee has a pH of 5
  • Black tea has an average pH of 5, green tea is between 7 and 10, and lemon is about 3
  • Apple juice and other juices like cranberry, lemon and orange can range in pH, approximately 2 to 4
  • Soft drinks, in general, range along the pH scale anywhere from 2 to 5


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