Smoothies vs Kombucha:
Which Is Gluten-Free?
Two health drinks that are usually safe. Both are typically gluten-free: watch added mix-ins, barley malt, and protein powders.
Kombucha is the safer celiac choice — Kombucha is gluten-free, while Smoothies depends on the brand or preparation.
Verdicts last reviewed July 2026 · based on FDA gluten-free labeling rules and Celiac Disease Foundation guidance
Kombucha is the safer celiac choice — Kombucha is gluten-free, while Smoothies depends on the brand or preparation.
Smoothies
It depends. Fruit smoothies are usually gluten-free, but add-ins like granola, wheatgrass, protein powders, and some bases can contain gluten.
Watch out for:
- Granola, oats, and wheatgrass add-ins
- Protein/supplement powders may contain gluten or malt
- Shared blenders at smoothie shops
Kombucha
Yes. Most kombucha is fermented tea and gluten-free, though a few varieties add barley or wheat-based ingredients — check the label.
Watch out for:
- A few varieties add barley malt or wheatgrass
- Hard kombuchas may use beer-style ingredients
- Trace gluten possible if fermented with gluten grains
Gluten-free swaps
Instead of Smoothies:
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