As an Amazon Associate, Barista Life earns from qualifying purchases.
Celsius and Alani Nu are tied on caffeine. A standard can of either is 200mg in 12 fl oz. Celsius confirms 200mg per can on its own essential facts page, and Alani Nu lists 200mg of caffeine per 12 fl oz on its product pages. If you are picking between the two cans in the cooler, caffeine will not settle it. The differences live in the ingredient lists and in the extended lines, where Celsius Essentials jumps to 270mg per 16 oz can.
The tie is real, and the "stronger" line barely is
Here is the quirk. Celsius Essentials sounds like a big step up at 270mg, but the can is also bigger. Do the math per ounce and the standard cans work out to about 16.7mg per oz while Essentials lands at about 16.9mg per oz. Essentials is not a stronger drink so much as more of the same drink. You feel more total caffeine because you drink 16 oz instead of 12, not because the formula is meaningfully more concentrated.
Where the two brands actually diverge is what rides along with the caffeine. Celsius is built on its MetaPlus blend, which Caffeine Informer lists at 1,810mg total: taurine, guarana seed extract, green tea leaf extract standardized to 10% EGCG, caffeine anhydrous, glucuronolactone, and ginger root extract. The green tea and ginger are the thermogenic angle Celsius markets around. Alani Nu skips the thermogenic pitch. Its label leans on caffeine plus L-theanine, taurine, panax ginseng root extract, guarana seed extract, L-carnitine L-tartrate, and a B vitamin stack with biotin. L-theanine is the notable one for anyone who gets jittery, since it is commonly paired with caffeine to smooth the edge. Both are zero sugar. Celsius runs about 10 calories a can and Alani Nu flavors sit between 5 and 15.
Flavor is the honest tiebreaker for most people. Alani Nu skews candy and slush flavors like Cherry Slush and Cotton Candy. Celsius skews sparkling fruit. Baristas on bar tend to grab whichever one the shop fridge stocks, which is its own kind of answer.
Caffeine by line, side by side
| Drink | Can or serving size | Caffeine | Sugar |
|---|---|---|---|
| Celsius (standard and Vibe) | 12 fl oz can | 200mg | 0g |
| Celsius Essentials | 16 fl oz can | 270mg | 0g |
| Celsius On-The-Go | 1 powder packet | 200mg | n/a |
| Celsius Hydration | varies | 0mg | n/a |
| Alani Nu Energy | 12 fl oz can | 200mg | 0g |
Celsius line figures come from the Celsius essential facts page, with the Essentials 16 oz can size confirmed on retailer listings. Alani Nu figures come from alaninu.com.
For context, the FDA cites 400mg of caffeine a day as an amount generally not associated with negative effects in healthy adults. How caffeine affects you depends on your own tolerance and health, so treat these numbers as information, not advice.
Two standard cans of either brand put you right at that 400mg mark before you count any coffee, and one Essentials plus one standard can puts you over it. If you are also pulling shots at work, one can is the sane ceiling.
If you want to compare prices across flavors, both brands sell variety packs: Celsius variety packs on Amazon and Alani Nu variety packs on Amazon.
Barista Life runs on coffee people. Browse the Barista Life shop to support the site.
Which one to pick
Pick Alani Nu if you want the L-theanine pairing and dessert flavors. Pick Celsius if you want the green tea and ginger blend or you specifically want the 270mg Essentials can for a long open-to-close shift. On caffeine alone there is no wrong answer between the standard cans, so let flavor and price decide.
We have a full flavor-by-flavor breakdown of Celsius in the Celsius caffeine guide.
Looking for a different drink? The full caffeine database has every chain and can we have verified, including Red Bull.
FAQ
Is Celsius stronger than Alani Nu? Not in the standard cans. Both contain 200mg of caffeine per 12 fl oz. Celsius Essentials contains 270mg, but that comes in a 16 oz can, so per ounce it is nearly identical to everything else both brands make.
Do Celsius and Alani Nu have sugar? No. Both are zero sugar. Celsius runs about 10 calories per can and Alani Nu flavors range from roughly 5 to 15 calories depending on the flavor.
What is the biggest ingredient difference between Celsius and Alani Nu? Celsius uses its MetaPlus blend with green tea extract, guarana, ginger, taurine, and glucuronolactone. Alani Nu pairs its caffeine with L-theanine plus taurine, ginseng, guarana, L-carnitine, and B vitamins, and skips the thermogenic marketing.