Updated at: 08-08-2023 - By: John Lau

Ever wondered what would happen if you mixed your soda pop with a minty Mentos?

It’s no secret there’s an impressive chemical reaction that results in a fountain of foam, making it a popular experiment among kids and adults alike.

This blog will take you on a journey to understand the science behind this explosive combination and debunk some myths about its potential dangers.

Ready for some fizzy revelations? Dive right in!

The Reaction between Coke and Mentos

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The explosive geyser effect

Coke and Mentos make an amazing show. Diet Coke shoots high in the air like a geyser,this happens when you drop a few Mentos into a bottle of soda.

It’s fun to see but be careful, it can be messy! The gas inside the coke needs to escape so it pushes out forming a fountain of foam!

The role of carbon dioxide

Carbon dioxide plays a key role in the explosive reaction between Coke and Mentos. When you drop Mentos into a bottle of Coca-Cola, it causes a rapid release of carbon dioxide bubbles from the soda.

These bubbles build up pressure inside the bottle until they burst out with force, creating an impressive geyser effect.

This is because Mentos are covered in tiny pits that provide nucleation sites for the carbon dioxide gas to escape quickly.

The released carbon dioxide creates foam and causes the soda to erupt like a volcanic fountain.

It’s important to note that this reaction happens due to the combination of ingredients in these specific products and should not be tried at home as it can be dangerous.

Safety Concerns and Risks

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Choking hazard

Eating Mentos and drinking Coke at the same time can pose a choking hazard, especially if you consume them together quickly.

The fizziness of the soda and the texture of the candy can create a sticky combination that may get stuck in your throat.

This could lead to difficulty breathing or even choking. To stay safe, it is best to avoid eating Mentos while drinking soda or make sure to chew them carefully and slowly.

Potential gastrointestinal issues

Drinking Coke and eating Mentos can lead to potential gastrointestinal issues.

The rapid release of carbon dioxide bubbles from the soda can cause gastric discomfort, leading to burping or even vomiting.

However, it’s important to note that there have been no reported deaths caused by this combination. So while it may cause some temporary stomach upset, it is not considered dangerous.

It’s always a good idea to exercise caution and moderation when consuming fizzy drinks and candies like Mentos.

Possible dental damage

Drinking Coke and eating Mentos can potentially cause dental damage. The combination of the carbonation in Coke and the chewy texture of Mentos can be harmful to your teeth.

When you drink soda, especially one with a high sugar content like Coke, the acid produced by bacteria in your mouth combines with the sugars to form plaque.

Plaque is a sticky film that coats your teeth and can lead to tooth decay and cavities over time.

Additionally, when you eat Mentos, they become sticky as you chew them, which can stick to your teeth and make it harder for saliva to wash away any remaining residue.

This increases the risk of tooth decay even further. To protect your dental health, it’s best to limit or avoid consuming sugary drinks like Coke and practice good oral hygiene habits such as brushing twice a day and visiting your dentist regularly for check-ups.

Myth or Fact: Is It Dangerous?

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Debunking misconceptions

Misconceptions about the Coke and Mentos reaction have led to false beliefs and concerns.

Let’s set the record straight:

  1. There is no reported death caused by drinking Coke and eating Mentos.
  2. Eating Mentos while drinking Coca – Cola or any other soda has little to no effect on your body.
  3. The claim that Mentos can make your stomach swell up and explode is an urban myth.
  4. It is not dangerous to eat Mentos and drink Coca-Cola at the same time.
  5. There is no specific waiting time recommended before drinking Coke after eating Mentos.

Scientific explanations

The explosive reaction between Coke and Mentos is due to the release of carbon dioxide gas from the soda.

When Mentos, which has a rough surface, comes into contact with Coke, it creates nucleation sites where bubbles can form.

The carbon dioxide in the soda quickly forms bubbles on these rough surfaces and creates a foam eruption or geyser effect.

This happens because the carbon dioxide molecules cling onto tiny crevices on the Mentos surface, causing an intense fizzing reaction that results in a rapid release of gas.

So, when you drop Mentos into a bottle of Coca-Cola or any other soda, be prepared for an impressive explosion!

Precautions and Tips

Avoiding ingestion of Mentos and Coke simultaneously

To stay safe, it’s important to avoid eating Mentos and drinking Coke at the same time. Here are some precautions you should take:

  • Be mindful not to ingest Mentos and Coke together
  • If you want to experiment with the reaction between Mentos and Coke, it’s best to do so outside or in a controlled environment
  • Avoid putting Mentos into a bottle of Coke and then immediately drinking from it
  • Always handle Mentos and Coke separately to prevent accidental ingestion
  • Supervise children when they are handling Mentos or any carbonated beverages

Proper handling and disposal

  • Always handle Mentos and soda bottles with care to prevent any accidents.
  • Keep Mentos away from children or anyone who may be tempted to eat them with soda.
  • After conducting a Coke and Mentos experiment, dispose of the used materials properly.
  • Do not leave open bottles of soda with Mentos nearby as they can cause spills or eruptions.
  • Store both Mentos and soda in a cool, dry place to maintain their quality and prevent any unwanted reactions.
  • If you accidentally spill Mentos or soda, clean the area thoroughly to avoid sticky messes and potential slip hazards.
  • When disposing of empty soda bottles, make sure to rinse them out before recycling or throwing them away.
  • Remember that while the reaction between Coke and Mentos is impressive, it should always be done responsibly and safely.

Supervision for children

It is important to provide supervision for children when they are conducting the Mentos and Coke experiment.

While the reaction itself may be impressive and entertaining, there are safety concerns that need to be addressed.

Children should be guided on how to handle the materials properly and avoid ingestion of Mentos or excessive amounts of soda.

By closely supervising them, we can ensure their safety and prevent any potential choking hazards or gastrointestinal issues that may arise from this experiment.


In conclusion, drinking Coke and eating Mentos can create an impressive geyser effect due to the release of carbon dioxide bubbles.

While it may seem dangerous, there is no reported harm or deadly consequences from this combination.

However, it’s important to be cautious and avoid choking hazards by not ingesting them together. Enjoy the entertaining reaction but remember to prioritize safety.