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.
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 | 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.
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.
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.
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.
Let's cut through the noise. Choose Alani Nu if you want:
Choose CELSIUS if you want:
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.
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.
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.
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.
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.
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.
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 (15)
Scott Perlman
6 Feb 2026
Alani Nu is my go-to. No crash, tastes great.
Buddy Faith
6 Feb 2026
nah both suck just sugar water
Glenn Celaya
7 Feb 2026
you're right but CELSIUS is better for weight loss. Alani Nu is just marketting
Karl Fisher
9 Feb 2026
Alani Nu is clearly superior. CELSIUS is for the unrefined masses. Only a fool would choose the latter.
Jen Becker
10 Feb 2026
Actually CELSIUS has thermogenics. Alani Nu is just sweetened water.
Samuel Bennett
12 Feb 2026
Actually, you're wrong. CELSIUS has better ingredients. Alani Nu is full of sucralose which is bad for you. It's a scam.
mark nine
14 Feb 2026
Both have 200mg caffeine. Alani Nu uses stevia, CELSIUS uses acesulfame. Depends on your sweetener preference.
Ryan Toporowski
15 Feb 2026
Exactly! 🍃 Both good choices. Just pick what you like. 👍
Sandi Johnson
16 Feb 2026
Agreed. Alani Nu is way better. CELSIUS is just a fancy soda with extra ingredients.
Chris Atkins
17 Feb 2026
Alani Nu for me. Tastes better no sugar crash
Rob D
19 Feb 2026
CELSIUS is American made. Alani Nu is foreign. That's why it's better. USA over everything.
Franklin Hooper
20 Feb 2026
Actually, the manufacturing location has no bearing on quality. CELSIUS's use of acesulfame potassium is questionable.
Thabo mangena
21 Feb 2026
As a South African, I appreciate the importance of natural ingredients. Alani Nu's use of stevia aligns with traditional medicinal practices. CELSIUS's additives may not suit all.
Tony Smith
23 Feb 2026
Indeed. While CELSIUS may have thermogenics, the artificial sweeteners are a red herring. One should focus on whole foods for health.
Eva Monhaut
25 Feb 2026
I've tried both Alani Nu and CELSIUS extensively over the past few months.
Alani Nu's Cosmic flavor is my favorite-it's refreshing without being overly sweet.
The stevia gives it a clean taste that doesn't leave an artificial aftertaste like some other drinks.
CELSIUS, on the other hand, has that herbal kick from the ginger and green tea extract, which is nice for pre-workout.
However, I find the aftertaste from the acesulfame potassium a bit off-putting.
Both have the same caffeine content, which is good for energy without a crash.
But the thermogenic ingredients in CELSIUS don't seem to make much difference for me personally.
I've done some research on the green tea extract, and while it does boost metabolism slightly, the amount in a single can is minimal.
Alani Nu's simplicity is appealing; it's just B vitamins, caffeine, and natural sweeteners.
I don't like how CELSIUS markets itself as a weight-loss aid-it's not a magic solution.
Exercise and diet matter more than any energy drink.
Still, both are better than sugary alternatives.
I'd recommend trying both to see which you prefer.
For me, Alani Nu is the clear winner.
It's perfect for post-workout recovery without any guilt.
And yes, I've tried the Bae flavor too-it's delicious.