Celsius vs Alani Nu: Caffeine, Sweeteners and Ingredients

Celsius Sparkling Peach Vibe and Alani Nu Cosmic Stardust each list 200 mg of caffeine and 0 g of sugar per 12 fl oz can; Celsius is sweetened with sucralose alone and lists no preservatives, while Alani Nu uses sucralose plus acesulfame potassium and lists sodium benzoate and potassium sorbate. Neither lists aspartame.

Celsius Sparkling Peach Vibe and Alani Nu Cosmic Stardust both deliver exactly 200 mg of caffeine in a standard 12 fl oz (355 mL) can, but their ingredient lists differ. Celsius relies solely on sucralose for sweetness, lists zero chemical preservatives, contains 5 mg of sodium, and includes an extensive vitamin panel with minerals like calcium and chromium. Alani Nu pairs sucralose with acesulfame potassium, lists the preservatives sodium benzoate and potassium sorbate, provides 180 mg of sodium, and focuses on baseline B vitamins alongside compounds like L-theanine.

Key takeaways:

• Both beverages provide an identical 200 mg of caffeine per 12 fl oz can, the single-dose level the European Food Safety Authority (EFSA) says does not give rise to safety concerns for adults.
• Celsius sweetens solely with sucralose, whereas Alani Nu uses a dual-sweetener blend of sucralose and acesulfame potassium (ace-K).
• Alani Nu lists chemical preservatives (sodium benzoate and potassium sorbate) and 180 mg of sodium, while Celsius contains 5 mg of sodium and no added benzoate or sorbate preservatives.
• Celsius includes a broader fortification mix with vitamin C, calcium, and chromium, whereas Alani Nu's B vitamins sit at 100% to 110% of the Daily Value.

Celsius vs Alani Nu: At-a-Glance Label Comparison

For Celsius against another big brand, see Celsius vs Monster.

The table below uses the label image Celsius publishes for Sparkling Peach Vibe and Alani Nu's product page can image for Cosmic Stardust (both 12 fl oz / 355 mL).

Nutrient / Ingredient	Celsius Sparkling Peach Vibe (12 fl oz)	Alani Nu Cosmic Stardust (12 fl oz)
Serving Size	1 can (355 mL)	1 can (355 mL)
Calories	10	15
Total Carbohydrate	0 g	4 g (1% DV)
Total Sugars	0 g	0 g
Sodium	5 mg	180 mg (8% DV)
Caffeine	200 mg	200 mg
Primary Sweeteners	Sucralose	Sucralose, Acesulfame Potassium
Preservatives	None listed	Sodium Benzoate, Potassium Sorbate
Shared Functional Compounds	Taurine, Glucuronolactone, Guarana Extract	Taurine, Glucuronolactone, Guarana Extract
Unique Botanicals / Actives	Green Tea Extract, Ginger Root Extract	L-Theanine, L-Carnitine L-Tartrate, Panax Ginseng, Inositol
Vitamin C	60 mg (70% DV)	Not listed
Vitamin B3 (Niacin)	20 mg (130% DV)	16.8 mg (110% DV)
Vitamin B6	2 mg (120% DV)	1.8 mg (110% DV)
Vitamin B12	6 mcg (250% DV)	2.5 mcg (100% DV)
Biotin (Vitamin B7)	300 mcg (1000% DV)	30 mcg (100% DV)
Pantothenic Acid (B5)	10 mg (200% DV)	5.3 mg (110% DV)
Calcium	50 mg (4% DV)	None listed (contains D-Calcium Pantothenate)
Chromium	50 mcg (140% DV)	Not listed

Is Celsius or Alani Nu healthier? Label differences

Neither label makes one objectively healthier: both list 200 mg of caffeine and 0 g of added sugars, Celsius has less sodium (5 mg vs 180 mg) and no listed preservatives, and Alani Nu has lower B-vitamin amounts (100% to 110% of the Daily Value vs up to 1000% for Celsius biotin).

Celsius provides a formula with only 5 mg of sodium and avoids antimicrobial preservatives like sodium benzoate and potassium sorbate entirely. It also adds vitamin C and trace minerals like chromium. Its B-vitamin amounts are high relative to the Daily Value, including 1000% DV of biotin and 250% DV of vitamin B12, alongside green tea extract and ginger root extract.

Alani Nu features a different set of tradeoffs. It lists 180 mg of sodium and two preservatives, keeps its B vitamins between 100% and 110% of the Daily Value, and adds L-theanine, L-carnitine L-tartrate, Panax ginseng root extract and inositol, which Celsius does not list.

Does Celsius or Alani Nu have more caffeine?

Neither beverage has more caffeine: both Celsius Sparkling Peach Vibe and Alani Nu Cosmic Stardust contain exactly 200 mg of caffeine per 12 fl oz (355 mL) can.

This 200 mg amount represents half of the 400 mg daily caffeine intake that the U.S. Food and Drug Administration (FDA) cites for most adults as an amount not generally associated with negative effects. In its Scientific Opinion on the safety of caffeine (EFSA Journal 2015;13(5):4102), EFSA says single doses of caffeine up to 200 mg (approximately 3 mg per kilogram of body weight for a 70-kg adult) do not give rise to safety concerns. For pregnant women, EFSA says habitual caffeine consumption up to 200 mg per day does not give rise to safety concerns for the fetus.

While the total dose of 200 mg is identical, the delivery mechanisms on the ingredient statements feature different botanical companions. Celsius lists caffeine alongside guarana seed extract and green tea extract. Alani Nu lists caffeine alongside guarana seed extract, while omitting green tea. The brands do not disclose the exact breakdown between added caffeine and caffeine from these extracts.

Both cans carry specific cautionary warnings. The Celsius label states that the drink is not recommended for people who are caffeine sensitive, children under 18, or women pregnant or nursing. Alani Nu similarly states that its product is not recommended for children, people sensitive to caffeine, pregnant women, or women who are nursing. Consumers tracking total stimulant exposure across product lines can read more in our guide on Red Bull vs Celsius: Caffeine, Sweeteners, and Ingredients, as well as ongoing international regulatory discussions like England Bans Energy Drinks for Under-16s. US Labels Hide Caffeine.

What sweeteners are in Celsius and Alani Nu?

Celsius Sparkling Peach Vibe is sweetened exclusively with sucralose, whereas Alani Nu Cosmic Stardust is sweetened with a combination of sucralose and acesulfame potassium (ace-K). Neither beverage contains sugar, and both product labels state 0 g of total and added sugars.

Sucralose is a high-intensity non-nutritive sweetener authorized under 21 CFR 172.831 for general food use. According to the FDA, sucralose is roughly 600 times sweeter than table sugar. The FDA lists an Acceptable Daily Intake (ADI) for sucralose of 5 mg per kilogram of body weight per day. In Europe, the European Food Safety Authority completed a re-evaluation of sucralose in 2026 (doi:10.2903/j.efsa.2026.9854), concluding that there was no need to revise the current European ADI of 15 mg per kilogram of body weight per day, and that exposure estimates for currently authorised uses did not exceed it.

Acesulfame potassium, used in Alani Nu alongside sucralose, is regulated under 21 CFR 172.800 as a general-purpose sweetener and flavor enhancer. The FDA identifies ace-K as being approximately 200 times sweeter than table sugar, often combined with other sweeteners, and lists an ADI of 15 mg per kilogram of body weight per day. In 2025, an EFSA re-evaluation (doi:10.2903/j.efsa.2025.9317) set an ADI for acesulfame potassium of 15 mg/kg bw per day, replacing the earlier 9 mg/kg bw per day, and found the highest exposure estimate was generally below the ADI in all population groups. Neither brand discloses the exact milligrams of sucralose or acesulfame potassium contained in each can.

Does Alani Nu have aspartame?

No, Alani Nu Cosmic Stardust does not have aspartame; its sweetening system relies entirely on sucralose and acesulfame potassium. Similarly, Celsius Sparkling Peach Vibe does not contain aspartame.

Both beverages are formulated as zero-sugar drinks, but they achieve that status without aspartame or sugar alcohols like erythritol on their US labels. Note that while international versions of beverages can occasionally differ, the domestic US packaging for Alani Nu Cosmic Stardust lists no erythritol or aspartame, relying strictly on the sucralose and acesulfame potassium pairing.

Preservatives and Shelf-Life Additives Compared

Celsius Sparkling Peach Vibe lists no chemical preservatives on its ingredient panel, whereas Alani Nu Cosmic Stardust includes sodium benzoate and potassium sorbate.

Alani Nu uses sodium benzoate, an antimicrobial additive regulated under 21 CFR 184.1733. That regulation describes its use as an antimicrobial agent and notes that current usage results in a maximum level of 0.1 percent in food. Alani Nu pairs this with potassium sorbate, which is authorized as a food substance generally recognized as safe (GRAS) under 21 CFR 182.3640 when used in accordance with good manufacturing practice.

Celsius's ingredient list includes citric acid but no benzoate or sorbate.

Sodium and Carbohydrate Differences Across Formulations

Alani Nu Cosmic Stardust contains 180 mg of sodium (8% DV) and 4 g of total carbohydrate (1% DV), while Celsius Sparkling Peach Vibe contains 5 mg of sodium and 0 g of total carbohydrate.

Alani Nu's ingredient list includes three sodium-containing ingredients: sodium citrate, salt and sodium benzoate.

Regarding carbohydrates, Alani Nu discloses 4 g of total carbohydrate per can despite listing 0 g of total sugars. Celsius lists 0 g of carbohydrate and states on its label that it is not a significant source of total sugar or added sugars.

Do Celsius and Alani Nu have taurine?

Yes, both Celsius Sparkling Peach Vibe and Alani Nu Cosmic Stardust have taurine listed on their ingredient panels.

In addition to taurine, both formulas share glucuronolactone and guarana seed extract. EFSA's opinion on caffeine concluded that other energy-drink constituents at typical concentrations (about 4,000 mg/L of taurine and 2,400 mg/L of d-glucurono-γ-lactone) would not affect the safety of single doses of caffeine up to 200 mg. Neither Celsius nor Alani Nu discloses the quantitative milligram breakdown of taurine or glucuronolactone per can on their product packaging.

Beyond these shared compounds, the formulas branch into distinct functional additions:

• Celsius incorporates green tea extract, ginger root extract, and chromium chelate (providing 50 mcg or 140% DV of chromium), alongside calcium carbonate (50 mg or 4% DV of calcium).
• Alani Nu incorporates L-theanine, L-carnitine L-tartrate, Panax ginseng root extract, and inositol.
• Colorants differ: Celsius uses beta-carotene for color, whereas Alani Nu uses vegetable juice and fruit juice.

Vitamin fortification also diverges across the two labels. Celsius includes 60 mg of vitamin C (70% DV) and provides substantially elevated concentrations of B vitamins: 300 mcg of biotin (1000% DV), 6 mcg of vitamin B12 (250% DV), 10 mg of pantothenic acid (200% DV), 20 mg of niacin (130% DV), and 1.7 mg of riboflavin (130% DV). Alani Nu does not list vitamin C; its B vitamins sit at 100% to 110% of the Daily Value: 30 mcg of biotin (100% DV), 2.5 mcg of vitamin B12 (100% DV), 16.8 mg of niacin (110% DV), 1.8 mg of vitamin B6 (110% DV), and 5.3 mg of pantothenic acid (110% DV).

Formulas vary by flavor and market, so scan the can you buy with the Aurascan app to see every ingredient.