Alani Nu vs CELSIUS: Which Low-Calorie Energy Drink is Best for You?

When it comes to low-calorie energy drinks, Alani Nu and CELSIUS are top contenders. You're at the gym, ready to crush your workout, but which one should you grab? Both promise clean energy without the sugar crash, yet they're not the same. Let's cut through the marketing and see exactly how they differ.

The Core Difference

At first glance, Alani Nu and CELSIUS look similar: zero sugar, low calories, and caffeine. But the real difference lies in their ingredients. Alani Nu focuses on natural sweeteners and straightforward B-vitamin support. CELSIUS adds thermogenic ingredients like green tea extract and L-carnitine, designed to boost metabolism. This isn't just hype-it changes how each drink affects your body.

Ingredient Deep Dive

Comparison of Alani Nu and CELSIUS Ingredients
Ingredient Alani Nu CELSIUS
Caffeine 200mg per can 200mg per can
Sweeteners Sucralose and stevia leaf extract Sucralose and acesulfame potassium
Thermogenic Ingredients None Green tea extract, L-carnitine, ginger root extract
Vitamin B Complex Niacin (B3), B6, B12 Niacin (B3), B6, B12
Other Additives Taurine, citric acid, sodium citrate Taurine, citric acid, sodium citrate

Both drinks have identical caffeine levels, but their sweeteners and extra ingredients set them apart. Alani Nu uses stevia, which many find more natural. CELSIUS combines sucralose with acesulfame potassium, which can create a slightly different taste. The thermogenic blend in CELSIUS includes green tea extract (rich in EGCG catechins) and L-carnitine, often linked to fat metabolism.

Health Impact

Caffeine delivers the same alertness boost in both drinks. But CELSIUS's green tea extract may offer extra benefits. A 2022 study in the Journal of Nutritional Science showed green tea extract can increase metabolic rate by 3-4% when paired with caffeine. However, CELSIUS contains only about 100mg of green tea extract per can-so the effect is modest for most people.

Stevia in Alani Nu is a natural sweetener with no calories and no blood sugar impact. Some research suggests it might even help regulate glucose levels. On the other hand, acesulfame potassium in CELSIUS has faced debate, though the FDA considers it safe. Neither drink poses major health risks when consumed in moderation.

Both include taurine and B vitamins to support energy metabolism. The B vitamins in each are sufficient for daily needs but won't replace a balanced diet. If you're sensitive to artificial sweeteners, Alani Nu's stevia blend might be gentler.

Split view of Alani Nu with stevia and fruit vs CELSIUS with green tea and ginger.

Taste and Flavor Variety

Taste is personal, but here's what most users report. Alani Nu leans into fruity flavors like "Bae" (tropical punch) and "Cosmic" (blue raspberry). Many find these refreshing without being overpowering. The stevia-based sweetness tends to be mild and clean.

CELSIUS flavors often have herbal or citrusy profiles. "Cooler" (citrus) and "Razzleberry" (berry) are popular. The acesulfame potassium can leave a slight aftertaste for some, but many adapt quickly. CELSIUS also offers a "Metabolism Booster" line with noticeable ginger notes.

If you love classic fruit flavors, Alani Nu wins. If you prefer herbal or citrusy tastes, CELSIUS has more variety. Try both to see which you prefer.

Price and Value

Both drinks typically cost $2.50-$3.00 per can when bought individually. Bulk purchases (like 12-packs) often drop the price to around $2.00 per can. CELSIUS is sometimes slightly pricier in certain stores due to its thermogenic claims, but the difference is negligible.

In terms of value, both offer similar benefits for the price. If you want a straightforward energy boost, Alani Nu delivers. If you're targeting metabolism support, CELSIUS has extra ingredients-but neither will replace healthy habits.

Beach scene with tropical drink and hike with citrus drink.

Who Should Choose Which?

Let's cut through the noise. Choose Alani Nu if you want:

  • Natural sweeteners (stevia + sucralose)
  • Fruity, refreshing flavors
  • A simpler ingredient list

Choose CELSIUS if you want:

  • Thermogenic ingredients (green tea extract, L-carnitine)
  • Herbal or citrusy taste profiles
  • Extra metabolism support during workouts

But remember: neither drink is a magic solution. Weight loss and fitness depend far more on consistent exercise and a healthy diet. Both are safe for most people when consumed in moderation-stick to one can per day.

Conclusion

Alani Nu and CELSIUS are both excellent low-calorie energy drinks, but they serve different needs. Alani Nu excels with clean, fruity flavors and natural sweeteners. CELSIUS adds thermogenic support for those focused on metabolism. The best choice depends on your personal taste and goals. Try both and see which one fits your routine better.

Do Alani Nu and CELSIUS have the same caffeine content?

Yes, both Alani Nu and CELSIUS contain 200mg of caffeine per 12oz can. This is a standard dose for energy drinks, equivalent to about two cups of coffee. However, individual sensitivity to caffeine varies, so it's important to monitor how your body reacts.

Which one has more sugar?

Neither has sugar. Both Alani Nu and CELSIUS are sugar-free, with zero grams of sugar per can. They use artificial sweeteners like sucralose and stevia (Alani Nu) or sucralose and acesulfame potassium (CELSIUS) for sweetness.

Is CELSIUS better for weight loss than Alani Nu?

CELSIUS contains thermogenic ingredients like green tea extract and L-carnitine, which may support metabolism. However, the effect is modest. Weight loss primarily depends on calorie deficit and exercise habits. While CELSIUS might offer a slight edge in metabolism support, neither drink alone will lead to significant weight loss.

Are there any health risks with these energy drinks?

When consumed in moderation (one can per day), both are generally safe for healthy adults. However, excessive caffeine intake (over 400mg daily) can cause jitteriness or sleep issues. People with heart conditions or caffeine sensitivity should consult a doctor before regular consumption. Also, some studies suggest artificial sweeteners may affect gut health in sensitive individuals, but more research is needed.

Which one tastes better?

Taste is subjective. Alani Nu is known for fruity flavors like Bae and Cosmic, which many find refreshing and less intense. CELSIUS has more herbal or citrusy profiles, like "Cooler" or "Razzleberry," with a slightly different sweetness due to acesulfame potassium. Try both to see which you prefer!

Comments (2)

  • Scott Perlman

    Scott Perlman

    6 Feb 2026

    Alani Nu is my go-to. No crash, tastes great.

  • Buddy Faith

    Buddy Faith

    6 Feb 2026

    nah both suck just sugar water

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