Grapefruit Sparkling Energy Drink

Sharp, dry, and citrus-forward. The direct one.

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$34.99

- 120mg natural caffeine
- L-theanine 100mg
- 70 calories
- 33% real fruit juice

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Estimated delivery between November 07 and November 09. Order within .

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Sharp, dry, and direct. Real grapefruit, a little sour, with the pith and bite left in. If you take your coffee black, start here.

33% real fruit juice, 120mg of natural caffeine from organic guayusa and green coffee bean, and 70 calories per can.

Ingredients

Ingredients

Amount

  • Natural caffeine

    120mg

  • L-theanine

    100mg

  • Calories

    70

  • Real fruit juice

    33%

Best very cold. It's dry enough to drink alongside a meal, the way you'd drink sparkling water.

Equally at home at a desk at 7 a.m., in a library carrel, or on a break between jobs.

Our most direct flavor

Citrus-forward, sharp, no sweetness hiding the rest. If you reach for black coffee over anything sweet, this is your flavor.

Real grapefruit juice brings the pith and bite that synthetic citrus never gets right — synthetic usually lands somewhere between lemon-lime soda and cleaning product. This tastes like grapefruit. Sharp, dry, fully awake, done.

The energy, in real time

120mg of natural caffeine, sourced from guayusa and green coffee. Roughly a strong cold brew — but it doesn't arrive like one.

The green coffee hits first. Guayusa smooths the back end. L-theanine keeps focus clean, so you stay clear without the wired feeling. It holds steady for a few hours, then comes down gently. No crash to plan around.

FAQ

Clean, citrus-forward, and dry — the most direct of the three AMBI flavors, with no sweetness covering it up. It's made with 33% real fruit juice, which gives it the genuine pith and bite that synthetic grapefruit flavoring can't match.

Yes — it's the least sweet and sharpest of the three flavors, made for the palate that prefers black coffee's edge over sugar. The sweetness comes from real grapefruit juice and a touch of stevia leaf, never added sugar.

70 calories per can. It's a natural grapefruit energy drink made with 33% real fruit juice and 120mg of natural caffeine from guayusa and green coffee, with no artificial flavors and no preservatives — the calories come from real ingredients.

AMBI variety pack with all three flavors, the easiest way to try the lineup.

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