If you've ever flipped over a can of your favorite energy drink and scanned the ingredient list, you've probably noticed a few words that don't exactly roll off the tongue. Sodium benzoate. Potassium sorbate. Calcium disodium EDTA. These are chemical preservatives, and they're in more energy drinks than you'd think.
But what do they actually do? And more importantly, should you care?
Let's break it down.
What Are Preservatives, and Why Are They in Energy Drinks?
Preservatives are ingredients added to food and beverages to prevent spoilage. They stop the growth of bacteria, mold, and yeast so products can sit on store shelves for months without going bad.
In the energy drink world, preservatives serve a practical purpose. Most of these beverages contain water, sugars or sweeteners, and various functional ingredients that can degrade over time. Without some form of preservation, they'd have a very short shelf life, and that creates problems for everyone from the manufacturer to the retailer to the person grabbing one at the gas station.
The most common preservatives you'll find in energy drinks include sodium benzoate, potassium sorbate, and citric acid (which doubles as a flavoring agent). Some brands also use calcium disodium EDTA, a chelating agent that prevents discoloration and off-flavors.
The Problem With Chemical Preservatives
Here's where it gets interesting. Just because something is common doesn't mean it's ideal.
Sodium benzoate has drawn attention from researchers because it can react with ascorbic acid (vitamin C) to form benzene, a known carcinogen. While the levels found in beverages are generally considered low, the fact that this reaction can happen at all is worth knowing about, especially in drinks that also contain citric acid and vitamin C.
Potassium sorbate is generally recognized as safe by the FDA, but some studies have raised questions about its effects on DNA at high concentrations. For most people, the amounts found in a single energy drink aren't cause for alarm, but if you're drinking one or two every day, those small amounts start to add up.
The bigger picture is this: preservatives are a workaround. They exist because manufacturers need a cheap, convenient way to keep products shelf-stable. But they're not the only way.
There's a Better Way: Pasteurization
Pasteurization is a process that uses heat to eliminate harmful microorganisms in food and beverages. It's been around since the 1800s, and it's the same method used to make your milk, juice, and kombucha safe to drink.
The beauty of pasteurization is that it doesn't add anything to the product. No chemicals, no additives, no extra ingredients on the label. It works by applying controlled heat for a specific amount of time, destroying the bacteria and yeast that would otherwise cause spoilage. The result is a product that's shelf-stable for months, often 18 months or more, without needing a single chemical preservative.
So why don't all energy drink brands use it? Pasteurization requires specialized equipment and careful process control. It's more expensive and more complex than simply adding a scoop of sodium benzoate to the formula. For large manufacturers optimizing for cost, chemical preservatives are the easier path.
But for brands that prioritize what's actually in the can, pasteurization is the clear choice.
How to Spot Preservatives on an Energy Drink Label
Reading labels is one of the simplest things you can do to make better choices. Here's what to look for:
Check the ingredient list for sodium benzoate, potassium sorbate, calcium disodium EDTA, or sodium bisulfite. If you see any of these, the product relies on chemical preservatives for shelf stability.
Also pay attention to what's not on the label. A shorter ingredient list usually means fewer additives. If a drink uses pasteurization instead of preservatives, you won't see those chemical names at all, because they're simply not needed.
One thing to note: citric acid appears on many labels and is technically a preservative, but it's also a naturally occurring acid found in citrus fruits. Its primary role in most energy drinks is as a flavoring agent, not a preservative, so its presence alone isn't a red flag.
What Huxley Does Differently
At Huxley, we use pasteurization instead of chemical preservatives. Every can goes through a controlled heat process that gives our drinks an 18-month shelf life, no sodium benzoate or potassium sorbate required.
This was a deliberate choice. We believe that if you're reaching for an energy drink because you want something better for you, the drink itself should actually deliver on that promise. Real fruit juice, 90mg of caffeine from Cascara Superfruit (the upcycled fruit surrounding the coffee bean), 5g of organic cane sugar as the only sweetener, and L-theanine for smooth, balanced energy. No artificial sweeteners, no chemical preservatives, no compromises.
It's a more expensive way to make an energy drink. But it's the right way.
The Clean Label Movement Is Growing
You're not alone if you've started paying more attention to ingredient lists. The clean label movement, where consumers demand simpler, more transparent ingredients, has been reshaping the food and beverage industry for years. And it's only accelerating.
More people are asking questions like: Do I know what every ingredient in this product actually is? Could this product be made without these additives? And increasingly, the answer is yes.
Pasteurization is one example of how brands can deliver the same shelf stability consumers expect without resorting to chemical shortcuts. It's not new technology. It's proven, well-understood science that's been keeping food safe for over a century. The only reason more brands don't use it is cost.
The Bottom Line
Preservatives in energy drinks aren't going to send you to the hospital. But they're also not necessary. Pasteurization offers a clean, chemical-free alternative that achieves the same goal, keeping your drink safe and shelf-stable, without adding ingredients you can't pronounce to the label.
If you're trying to make better choices about what you put in your body, checking for preservatives is a great place to start. Look for brands that use pasteurization, keep their ingredient lists short, and don't hide behind proprietary blends.
Your energy drink should give you energy, not a chemistry lesson.
Ready to try an energy drink made without chemical preservatives? Shop Huxley here.