Energy Drinks Without Artificial Sweeteners: What to Look for on the Label

"Zero sugar" is one of the most common claims on an energy drink can — but it doesn't tell you the whole story. Cutting sugar without cutting sweetness usually means an artificial sweetener has taken its place. Here's how to actually read the label.

How Brands Hit "Zero Sugar" Without Going Bland

Sugar does two jobs in a drink: it sweetens, and it adds calories. Removing it without replacing the sweetness would leave a flat, bitter-tasting can, so most brands swap it for a zero- or near-zero-calorie sweetener that's many times sweeter than sugar, gram for gram. That's how a can can claim "0g sugar" and still taste like a soft drink. This is one of several things worth checking on a label — see our full clean-label ingredients guide.

Common Artificial Sweeteners to Look For

The usual names on an ingredients list are sucralose, aspartame, acesulfame potassium (Ace-K), and occasionally saccharin. They're approved for use by food safety regulators, so they're not an urgent safety concern — but they're worth knowing how to spot if you're aiming for a shorter, more recognisable ingredient list.

Why Some People Are Moving Away From Them

A few things are driving the shift. Emerging research is exploring whether artificial sweeteners affect gut microbiome balance, and some studies suggest they may not reduce overall sugar cravings the way you'd expect. There's also a simpler, more personal reason: taste. Many people notice a lingering aftertaste with intensely sweet artificial sweeteners that a more moderate, naturally-sweetened drink doesn't have.

What's Used Instead

Brands avoiding artificial sweeteners generally take one of two routes. Some use plant-derived sweeteners like stevia leaf extract or monk fruit, which are natural. Which is part of Onest's approach, simply formulate with a lower overall sweetness level of the natural sweetener stevia and real fruit flavour, keeping calories low (some flavours as little as 25–27 kcal) but keeping the perfect amount of sweetness. It's the same thinking behind our use of natural caffeine instead of synthetic caffeine anhydrous.

How to Check a Label in 10 Seconds

Turn the can around and scan the ingredients list for sucralose, aspartame, acesulfame potassium (Ace-K), acesulfame-K, or saccharin. If none of those appear and the sugar content is still low, the drink is relying on formulation and flavour rather than an intense sweetener — which is generally the marker of a simpler, cleaner label. You'll find the full ingredient list on each Onest product page, including Apple Berry and Tropical Peach.

Does This Mean More Sugar?

Not necessarily. "No artificial sweeteners" doesn't automatically mean "high sugar" — it depends on the brand. Onest, for example, keeps both sugar and artificial sweeteners off the label while staying low-calorie across its range, as covered in our low-calorie energy drinks roundup.

FAQs

Are artificial sweeteners bad for you?

They're approved as safe by food regulators at typical intake levels. The debate is more about long-term gut health and appetite effects, which is still an active area of research — not an established risk.

What do natural energy drinks use instead of sugar or artificial sweeteners?

Options include stevia, monk fruit, or simply a lower overall sweetness profile built around real fruit flavour, which is the approach Onest takes.

Does no artificial sweeteners mean the drink has more sugar?

Not necessarily — check the nutrition panel for actual sugar and calorie content rather than assuming based on the sweetener claim alone.