A SODA THAT TASTES LIKE SODA - WITHOUT THE SUGAR

Zero Sugar, Zero Calories — Not a Health Food, Just a Better-Tasting Soda.

SHOP ON THE BRIGHTSIDE

Strawberry Sunshine On the Brightside beverage topped with two fresh red strawberries against a pale blue background.

What People Mean by "Healthy Soda"

There's no official definition of a "healthy soda." Generally, when people search for one, they mean a soda that skips the things that make regular soda a problem: added sugar, empty calories, artificial sweeteners, and a long list of unrecognizable ingredients.


A flavored soda has no food-group content, so it almost certainly fails to qualify as "healthy" under both the old and new definitions. What we can say about On the Brightside is that it has no sugar, no preservatives, and zero calories, and it still tastes great.

What to Look For If You're Cutting Back on Sugar

  • Zero added sugar — not just "reduced sugar," but none

  • Clean sweeteners — natural, not artificial, and without the bitter aftertaste some sugar-free sodas have

  • Short, recognizable ingredient list — no mystery blends or dozens of additives

  • No empty calories from added sugar

A Comparison of Sugar and Sugar Alternatives

Sweetener Calories/g Glycemic Index Notes
OnoSweet® (Reb M) 0 0 Fermented, rice-derived — not stevia, not a sugar alcohol. Cleaner, less bitter taste than older stevia extracts, with zero glycemic response. [15][16]
Sugar (sucrose) 4 65 The baseline. Well tolerated but excess intake is linked to weight gain, dental issues, and metabolic strain. [1][8]
High fructose corn syrup 4 75 Highest GI on this list. Frequently linked to fatty liver and elevated triglycerides at high intake. [3][8]
Honey ~3.2 ~58 Some antioxidant content, but still a moderate-to-high glycemic sugar. [3][7]
Agave nectar ~3 ~15 Low GI is misleading — it's very high in fructose, which can raise triglycerides even without spiking blood sugar. [3][7]
Xylitol 2.4 ~10 Can cause GI upset (bloating, laxative effect) in larger amounts. Highly toxic to dogs. [1][3][6]
Allulose ~0.4 ~1 A "rare sugar." Some research suggests it may modestly improve post-meal blood sugar response. Can cause bloating in large amounts. [4][8]
Erythritol ~0.2 ~0 Well tolerated in typical amounts, but a 2023 study linked elevated blood erythritol levels to cardiovascular event markers — an association, not proven causation, and still actively debated. [4][9][10][11]
Stevia 0 0 No blood sugar impact. Older extracts have a bitter, licorice-like aftertaste; newer formulations are cleaner. [2][6]
Monk fruit 0 0 No blood sugar impact. Generally less bitter than stevia; often blended with erythritol for bulk. [1][2][6]
Sucralose (Splenda) 0 0 Heat-stable, widely used. Some research has raised questions about effects on gut microbiome composition. [4][5]
Aspartame ~0* 0 Unsafe for people with PKU. IARC classified it as "possibly carcinogenic" (Group 2B) in 2023, but WHO/FAO's JECFA reaffirmed the existing acceptable daily intake (40 mg/kg body weight); the FDA has publicly disagreed with IARC's conclusion. [12][13][14]

*Aspartame is ~4 cal/g in pure form, but the tiny amounts used per serving make its practical calorie contribution negligible — same logic applies to sucralose and stevia.

Sources

  1. Krampf, Maya. "Keto Sweetener Conversion Chart For Erythritol, Monk Fruit, Stevia, & More." Wholesome Yum, Aug. 20, 2022.

  2. "Stevia vs Monk Fruit vs Erythritol vs Allulose: 2026 Guide." The Low Carb Grocery, June 4, 2026.

  3. "Common Sweeteners and Their Glycemic Index: Chart." LOGI Food Coach Blog, Aug. 4, 2025.

  4. "Comparing Sweetener Effects on Blood Sugar." Appy Medical, Sept. 14, 2025.

  5. "Sweetener Glycemic Index Chart: Low GI Sugar Substitutes." Nutrisense Journal. Accessed July 2026.

  6. "Glycemic Index Sweeteners Chart." The Dietitian Prescription, Jan. 11, 2024.

  7. "Low Glycemic Index Foods and Sweeteners Guide." Jaca. Accessed July 2026.

  8. "The Best and Worst Sweeteners, Ranked by GI Index." GoodRx, Apr. 24, 2026.

  9. Witkowski, M., Nemet, I., Alamri, H., et al. "The artificial sweetener erythritol and cardiovascular event risk." Nature Medicine, 29, 710–718 (2023).

  10. "Expert reaction to study looking at an artificial sweetener (erythritol) and cardiovascular disease events." Science Media Centre, Feb. 27, 2023.

  11. "Plasma erythritol and cardiovascular risk: is there evidence for an association with dietary intake?" Frontiers in Nutrition, May 9, 2023.

  12. "Aspartame hazard and risk assessment results released." World Health Organization, July 14, 2023.

  13. "WHO Confirms Aspartame as Possible Carcinogen, but Acceptable Daily Intake Remains Unchanged." Food Safety Magazine, July 14, 2023.

  14. "Aspartame and Other Sweeteners in Food." U.S. Food and Drug Administration. Accessed July 2026.

  15. "OnoSweet® | Patented, Zero-Calorie Sweetener Made From Fermented Rice." Compound Solutions, Jan. 15, 2024.

  16. "Introducing On the Brightside, The Feel-Good Soda Redefining the Functional Beverage Category." BevNET.com, July 8, 2026.

What's In the Can

On the Brightside is zero sugar and zero calories, sweetened with OnoSweet®, a natural, fermented sweetener — not stevia, not sugar alcohols, not artificial sweeteners. It's naturally flavored, non-GMO, vegan, and gluten-free. Instead of a long list of functional additives, there's one: Zembrin®, a studied botanical extract, at a real dose.


No high-fructose corn syrup. No artificial colors. No caffeine. No proprietary "wellness blend" hiding what's actually in the can.

It's not a health food — it's a soda friendly to your sugar and calorie intake that still tastes great.

TRY A BETTER SODA

THE TASTE IS CATCHING ON

REAL REVIEWS FROM REAL PEOPLE

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4 CAN SAMPLER

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Strawberry Sunshine (2 cans)
Sparkling strawberry lemonade — bright and a little tart.


Guava Glow (2 cans)
Sparkling guava, passion fruit, and orange — tropical and refreshing.


Zero sugar · Zero Calorie · Zero proof · Zero THC

A can of Brightside sparkling drink tilted to pour into a clear glass, with a sliced strawberry garnish on the rim, against a purple gradient background with bright light effects.A bright green and gold can of On the Brightside Guava Glow zero sugar soda stands on a pink surface against a purple-to-pink gradient background, next to a glass of sparkling drink with a guava slice garnish.Strawberry Sunshine On the Brightside beverage topped with two fresh red strawberries against a pale blue background.Two cans of Brightside drinks, one Guava Glow and one Strawberry Sunshine, on a dark background.Two On the Brightside soda cans in the cup holders of a vintage car during golden hour, with one can being picked up by a hand.Three green On the Brightside Guava Glow cans with guava slices on a pink background
A can of Brightside sparkling drink tilted to pour into a clear glass, with a sliced strawberry garnish on the rim, against a purple gradient background with bright light effects.A bright green and gold can of On the Brightside Guava Glow zero sugar soda stands on a pink surface against a purple-to-pink gradient background, next to a glass of sparkling drink with a guava slice garnish.Strawberry Sunshine On the Brightside beverage topped with two fresh red strawberries against a pale blue background.Two cans of Brightside drinks, one Guava Glow and one Strawberry Sunshine, on a dark background.Two On the Brightside soda cans in the cup holders of a vintage car during golden hour, with one can being picked up by a hand.Three green On the Brightside Guava Glow cans with guava slices on a pink background