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Firehouse Subs Oatmeal Raisin Cookie

High histamine

This oatmeal raisin cookie is high in histamine, mostly from the raisins.

Food here is usually assembled to order from components that were prepped earlier in the day, so it tends to be fresher than a drive-through and less fresh than cooking at home. Histamine builds up as protein foods sit, so how long the chicken or beef has been in the warmer matters as much as what is in the bowl. Treat the rating above as a starting point.

Gluten Dairy Histamine Liberator

It is a soft baked cookie built on rolled oats, wheat flour, sugar, margarine, butter, eggs, molasses, and cinnamon.

  • Raisins — dried fruit is concentrated and runs high in histamine, and that alone sets the level for the whole cookie.

  • The supporting cast — the enriched wheat flour, margarine, molasses, and cinnamon each land moderate, so even setting the raisins aside the base is not a low one.

There is no easy way to pull the raisins out of a finished cookie, so a plain non-fruit sweet is the gentler route.

What's in it

This is a restaurant menu item, so its rating comes from its ingredients. Here is what it is typically made of and where the histamine sits. Tap any whole food for the full detail.

This rating comes from Firehouse Subs' own published ingredient statement, read on August 11, 2026. Restaurant recipes vary by location and change over time, so always check the current listing: source 1, source 2. How we rate foods →

Firehouse Subs Oatmeal Raisin Cookie and Firehouse Subs are trademarks of their respective owners. This page is an independent histamine reference and is not affiliated with, endorsed by, or sponsored by the brand.

Related foods

Other high-histamine restaurant foods.

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Foods With High Histamine Levels Why Freshness Matters More Than Food Lists Why Leftovers Can Trigger Histamine Symptoms What Are Histamine Liberators?

For educational purposes only. Not medical advice. Consult a healthcare professional for personal guidance.

References

  1. SIGHI Food Compatibility List — SIGHI (2026)
  2. Histamine and histamine intolerance — Maintz & Novak (2007)
  3. Histamine Intolerance: The Current State of the Art — Comas-Basté et al. (2020)
  4. Low-Histamine Diets: Is the Exclusion of Foods Justified by Their Histamine Content? — Sánchez-Pérez et al. (2021)
  5. Histamine Intolerance: Symptoms, Diagnosis, and Beyond — Jochum (2024)
  6. Guideline on management of suspected adverse reactions to ingested histamine — Reese et al. (2021)