nutrition labels for kombucha
Kombucha sits on a regulatory line: under 0.5% ABV it's a soft drink the FDA labels, at or above it becomes an alcoholic beverage under TTB — a completely different rulebook. Plus the sugar question everyone asks. Here's how to label it right.
key takeaways
- Serving size is 8 fl oz (240 mL); 14–16 oz bottles are usually two servings (and may need dual-column).
- Under 0.5% ABV it's an FDA soft drink; at/above 0.5% it's a TTB-regulated alcoholic beverage.
- Base kombucha is allergen-free — allergens only enter via flavor/functional add-ins.
- 'Low sugar' isn't FDA-defined; declare residual Total Sugars in grams — buyers read it.
- You can note 'live cultures' but can't make an unsubstantiated health claim.
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The short version
Kombucha is a fermented product, and fermentation makes two numbers move that the label has to pin down: alcohol and sugar. Below 0.5% ABV, kombucha is a non-alcoholic beverage the FDA governs with a standard Nutrition Facts panel. At or above 0.5%, it falls under the TTB (alcohol) regime with entirely different labeling. Everything starts with knowing which side of that line your product is on.
Serving size — the part people get wrong
Reference amount: 8 fl oz (240 mL) for kombucha and similar beverages. Kombucha uses the 8 fl oz (240 mL) beverage reference amount. Many kombucha bottles are 14–16 oz — those are generally two servings and must show a dual-column (per serving / per container) panel if they're around 200–300% of the reference and could be consumed in one sitting.
Allergens you have to declare
Base kombucha (tea, sugar, SCOBY, water) is allergen-free. Allergens only enter through flavorings and functional add-ins: rarely, but watch for anything nut-, soy-, wheat- or sesame-derived in a 'superfood' or protein kombucha. Most kombucha carries no Contains line — a clean profile to protect.
The Nutrillius generator auto-detects the Big-9 allergens from your ingredient list and writes the Contains statement for you — useful even if you only need the ingredient list.
Claims you can (and can’t) make
Every nutrient-content claim on the package has a legal threshold the panel must back up. For kombucha, the ones that come up most:
- Low calorie — ≤ 40 cal per serving — many kombuchas qualify.
- Low sugar — not FDA-defined; declare the grams instead — buyers read this number closely.
- No added sugar — tricky: sugar is the fermentation feedstock; only the residual matters, but added post-ferment sweeteners disqualify it.
- Contains live cultures / probiotic — a structure/function-style statement; not an FDA nutrient claim, and you can't claim a health benefit without substantiation.
The builder shows which claims your recipe already qualifies for as you tweak it — see the rounding rules for how the declared numbers behind those thresholds are set.
A sample kombucha label
Ginger Kombucha
INGREDIENTS: Kombucha (filtered water, cane sugar, black tea, green tea, live kombucha culture), ginger juice.
(No major allergens — no Contains line.)
Serving size 8 fl oz (240mL)
The cane sugar is the fermentation feedstock — most of it is consumed by the culture, so residual Total Sugars is what the panel declares. No allergens, so no Contains line.
Where kombucha makers slip up
The 0.5% ABV line changes your entire rulebook
Fermentation naturally produces alcohol, and kombucha can drift above 0.5% ABV — especially unrefrigerated. Below 0.5% it's an FDA-regulated soft drink with a Nutrition Facts panel. At or above 0.5% it's an alcoholic beverage regulated by the TTB, with different labeling, formulation approval and taxes. Test your ABV; don't assume.
Sugar is the number buyers actually check
Kombucha's whole health positioning collides with its sugar content, so Total Sugars is the most-scrutinized line on the panel. Declare the residual sugar honestly — the culture eats most of the feedstock sugar, but what remains is real and shown. 'Low sugar' has no FDA definition, so print the grams and let them speak.
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Build your kombucha label
Enter your recipe and get a print-ready FDA Nutrition Facts panel, ingredient statement and allergen declaration — with the 8 fl oz (240 mL) for kombucha and similar beverages serving handled for you. Free to build; pay only when you download.
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frequently asked questions
What serving size does kombucha use?
8 fluid ounces (240 mL). Since many kombucha bottles are 14–16 oz, those typically contain two servings — and if a bottle is roughly 200–300% of the reference and drinkable in one sitting, it needs a dual-column panel showing per-serving and per-container values.
Does kombucha have to declare alcohol?
It depends on the ABV. Under 0.5% alcohol by volume, kombucha is a non-alcoholic beverage under FDA rules and uses a standard Nutrition Facts panel. At 0.5% or above, it becomes an alcoholic beverage regulated by the TTB with a different labeling regime entirely. Test your product's ABV.
How do I handle sugar on a kombucha label?
Declare the residual Total Sugars — the sugar remaining after the culture has fermented most of the feedstock. It's usually much lower than the sugar you started with, but it's real and must be shown. Avoid 'low sugar' (no FDA definition) and just print the grams.
Can I say kombucha is 'good for gut health'?
Be careful. You can factually note 'live cultures' or 'contains probiotics,' but a specific health benefit ('improves digestion,' 'boosts immunity') is a health/structure-function claim that requires substantiation and can draw FDA attention. Keep on-label claims factual and defensible.
sources & references
Written from the primary regulation. We link the actual rule so you can verify every serving size, threshold and requirement at the source.
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