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IHOP Alfredo Sauce

High histamine

IHOP's Alfredo sauce is high in histamine because of the aged parmesan and granular cheese in it.

Most of this is cooked to order, which is the best case for histamine. Even so, a restaurant kitchen preps ahead and holds things warm through a service, so freshness varies more than it would at home. The rating above comes from the chain's published ingredients. If a dish is borderline for you, asking how it is prepared tells you more than the menu does.

Dairy

This is a creamy sauce built on reduced fat milk, heavy cream, canola oil, and cheese, with butter and starches to thicken.

  • Parmesan and granular cheese — these are aged, hard cheeses, and aging is what builds up histamine, so they push the whole sauce high even though the milk and cream themselves are mild.

  • The rest is milder — the reduced fat milk, heavy cream, and butter are fresh dairy, so on their own they would sit low, but a sauce is only as low as its highest ingredient.

On this menu, a plain buttered pasta or a dish without the cheese sauce would land lower.

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 IHOP's 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 →

IHOP Alfredo Sauce and IHOP 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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Learn more

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)