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IHOP Watermelon Syrup

Low histamine

IHOP's watermelon syrup is a sweet flavored topping that tends to be low in histamine.

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.

This is essentially a sugar syrup with flavoring and coloring, and nothing in it flags as a histamine driver.

  • Sugar base — the main ingredient is pure cane sugar, which is a simple sweetener that stays low and does not carry histamine.

  • Flavor and color additives — the natural and artificial flavor, citric acid, potassium sorbate, and red coloring are present in tiny amounts and none are flagged as drivers here.

This is one of the easier sweet toppings to enjoy if you are watching histamine.

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 Watermelon Syrup 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 low-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)