Iced tea
Iced tea is low in histamine; the tea base and any added ingredients are the main things to be aware of.
Chilling tea doesn't change its histamine content — so iced tea stays low — but what type of tea it's made from and what's added matters.
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Tea base makes a difference — black tea-based iced teas carry the same caffeine and tannins as hot black tea (oxidation can slightly affect the biogenic amine profile, but levels are usually low); green or white tea bases tend to be milder overall
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Bottled and sweetened versions — commercial iced teas often contain additives, citrus flavorings, or artificial sweeteners that some sensitive people find harder to tolerate than plain home-brewed versions; lemon and citrus additives in particular are worth watching
Homemade iced tea from green or white tea with no added flavoring gives you the most straightforward option.
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For educational purposes only. Not medical advice. Consult a healthcare professional for personal guidance.
References
- SIGHI Food Compatibility List — SIGHI (2026)
- Histamine and histamine intolerance — Maintz & Novak (2007)
- Histamine Intolerance: The Current State of the Art — Comas-Basté et al. (2020)
- Low-Histamine Diets: Is the Exclusion of Foods Justified by Their Histamine Content? — Sánchez-Pérez et al. (2021)
- Histamine Intolerance: Symptoms, Diagnosis, and Beyond — Jochum (2024)
- Guideline on management of suspected adverse reactions to ingested histamine — Reese et al. (2021)