Calcium-mineral blends in energy drinks linked to reduced enamel erosion
As energy drink consumption grows rapidly across North America and beyond, new research suggests that fortifying these acidic beverages with calcium-mineral blends could protect tooth enamel from erosion — a growing dental concern.
A June 2025 in vitro study conducted by Erik Jácome and colleagues at the State University of Rio Grande do Norte in Brazil found that energy drinks modified with calcium, phosphorus, and potassium compounds significantly reduced enamel surface damage when compared to unmodified versions.
The research offers a potential breakthrough in reducing the oral health risks of energy drink consumption, especially among younger demographics.
“The addition of calcium formulations to the energy drink effectively reduced its erosive potential at all concentrations,” the study noted, highlighting the calcium/phosphorus/potassium complex as the most effective blend.
Study design and methodology
The study assessed 60 dental enamel specimens, exposing them to both modified and unmodified Red Bull, one of the world’s most popular energy drinks. Specimens were divided into two groups:
Group 1 (Modified Red Bull):
Three types of calcium-mineral blends were tested at multiple concentrations:
- Calcium/phosphorus/potassium complex (0.71 g, 1.43 g, 2.15 g)
- Dicalcium malate (0.83 g, 1.66 g, 2.50 g)
- Calcium citrate malate (1.26 g, 2.53 g, 3.80 g)
Group 2 (Control):
Unmodified Red Bull energy drink
Testing procedures included:
- Measuring pH using a pH meter
- Exposing enamel specimens to drinks for 2 minutes
- Assessing changes in surface roughness and microhardness using a rugosimeter and Vickers microhardness tester
Key findings: Protective potential of calcium-mineral fortification
- The calcium/phosphorus/potassium complex increased pH levels of the energy drink, reducing acidity
- Drinks with 2.50 g of dicalcium malate and 2.15 g of the calcium/phosphorus/potassium complex significantly preserved enamel microhardness (p < 0.004) compared to the control
- All fortified drinks outperformed the unmodified Red Bull in preventing enamel softening
- The only solution more protective than the calcium-modified drinks was deionized water, used as a baseline comparison
Why this matters for dental health
Dental enamel erosion is an irreversible condition caused by frequent exposure to acidic substances. Energy drinks, with pH levels often well below 5.5, pose a particular risk to young people, who are among the highest consumers of these beverages.
As energy drink revenues in Canada are projected to hit US$4.4 billion by 2030, and Mexico emerges as North America’s fastest-growing market, dental professionals have raised alarms over the long-term oral health impacts.
This study offers a science-backed strategy to mitigate these effects: reformulating energy drinks with calcium-mineral blends that counteract acid damage without altering taste or branding appeal.
“Functional fortification with calcium and minerals could help make energy drinks safer for enamel without compromising consumer demand,” experts note.
What’s next?
While this was an in vitro lab-based study, researchers believe the results warrant further clinical trials. If confirmed, these findings could lead to regulatory or industry shifts — encouraging energy drink manufacturers to introduce tooth-friendly formulations as part of health-conscious product development.
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