A standard 12-ounce can of Celsius contains 200 mg of caffeine, zero sugar, and a proprietary blend of plant extracts and amino acids called the MetaPlus Thermogenic Blend. Beyond that core blend, the drink includes B vitamins, vitamin C, chromium, and a handful of common beverage ingredients like citric acid and carbonated water. Here’s what each of those components actually does.
The MetaPlus Thermogenic Blend
The centerpiece of every Celsius can is its MetaPlus blend, a mix of six ingredients the company says works together to raise your body’s resting energy expenditure through thermogenesis, which is essentially your body generating heat and burning slightly more calories in the process. The blend includes:
- Green tea extract standardized for EGCG, a compound that has been shown in studies to give metabolism a modest boost
- Guarana seed extract, a plant-based source of caffeine (guarana seeds naturally contain roughly twice the caffeine concentration of coffee beans)
- Caffeine anhydrous, a dehydrated, concentrated form of caffeine
- Taurine, an amino acid commonly found in energy drinks that plays a role in muscle function and hydration
- Ginger root extract, which may contribute to thermogenesis and support digestion
- Glucuronolactone, a naturally occurring compound your body produces during glucose metabolism, often added to energy drinks as a supporting ingredient
Because MetaPlus is a proprietary blend, Celsius doesn’t disclose the exact amount of each individual ingredient within it. You know the total caffeine in the can, but not precisely how much comes from guarana versus caffeine anhydrous, or how many milligrams of ginger root you’re getting.
Caffeine Levels Across Product Lines
Celsius makes several product lines, and the caffeine content varies significantly between them. The standard Celsius and Celsius Vibe cans (both 12 ounces) each contain 200 mg of caffeine. That’s roughly equivalent to two cups of brewed coffee. The larger Celsius Essentials line bumps that up to 270 mg per can.
For context, the FDA considers 400 mg of caffeine per day a generally safe upper limit for most healthy adults. One standard Celsius can puts you at half that threshold. The company recommends no more than two 12-ounce cans per day, which would bring you to 400 mg exactly, leaving no room for caffeine from any other source like coffee, tea, or chocolate.
Vitamins and Minerals
Each can provides a range of B vitamins (including B6, B12, biotin, riboflavin, niacin, and pantothenic acid), vitamin C, and chromium. B vitamins help your body convert food into energy at the cellular level. They don’t give you a jolt the way caffeine does, but they support the metabolic processes that produce usable energy throughout the day. Chromium plays a role in how your body handles insulin and blood sugar.
The mineral content is otherwise minimal. A can of the sparkling version contains only about 3.6 mg of sodium and roughly 50 mg of calcium. That sodium level is negligible compared to most packaged beverages.
What Celsius Leaves Out
Part of the brand’s marketing centers on what isn’t in the can. Celsius contains no sugar, no aspartame, no high fructose corn syrup, and no artificial preservatives or flavors. The drinks use sucralose as their primary sweetener, which keeps the calorie count at or near zero (most standard cans list 10 calories or fewer). Citric acid is used as an acidity regulator, which is standard across virtually all carbonated beverages.
The Celsius Hydration line takes a different approach entirely. It’s caffeine-free and built around B vitamins and electrolytes rather than the MetaPlus blend, making it a fundamentally different product that shares the brand name but not the stimulant profile.
Does the Thermogenic Blend Actually Work?
Celsius markets itself as a “functional fitness drink” that burns calories through thermogenesis. The individual ingredients in the MetaPlus blend do have some research behind them. EGCG from green tea, caffeine, and ginger compounds have all been studied for their ability to raise resting energy expenditure. The effect is real but modest. You’re talking about burning a small number of additional calories, not a dramatic fat-loss mechanism.
Caffeine is doing most of the heavy lifting here. It’s a well-established stimulant that temporarily increases metabolic rate and improves exercise performance. The other ingredients in the blend may contribute, but caffeine alone accounts for a large share of whatever thermogenic effect you experience. If you already drink two cups of coffee a day, swapping one for a Celsius gives you a similar caffeine dose with added vitamins and plant extracts, but it won’t fundamentally change your metabolism.
How Celsius Compares to Other Energy Drinks
At 200 mg of caffeine per 12-ounce can, Celsius sits on the higher end of mainstream energy drinks. A standard 8.4-ounce Red Bull contains 80 mg, while a 16-ounce Monster has about 160 mg. The zero-sugar formula and vitamin additions are common across the category now, but the inclusion of green tea extract, ginger, and guarana in a single blend is more distinctive.
The biggest practical difference is what’s missing rather than what’s added. Many competing energy drinks contain 30 to 50 grams of sugar per can. Celsius avoids that entirely, which means you skip the calorie load and the blood sugar spike that comes with sugar-heavy alternatives. For someone choosing between energy drinks, the ingredient profile is cleaner than most, though the caffeine content deserves respect. Two cans plus a morning coffee would push you well past the 400 mg daily guideline.