Is Texas Roadhouse Island Cooler High in Histamine?

Texas Roadhouse Island Cooler

High histamine

This cooler is high in histamine, driven by the lemonade base.

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.

Histamine Liberator DAO Blocker

This is a tropical cocktail of lemonade, coconut rum, peach schnapps, sweet and sour mix, and blue curacao syrup.

Lemonade — the lemonade is built on lemon, a classic histamine liberator, and that is the main ingredient carrying this drink into high territory.
The sweet and sour — the sweet and sour mix leans on the same citrus profile, so it stacks in the same direction as the lemonade rather than softening it.

There is no easy way to lower this one, so a different drink is the better route.

This rating comes from Texas Roadhouse's own published ingredient statement, read on August 10, 2026. Restaurant recipes vary by location and change over time, so always check the current listing: source 1, source 2. How we rate foods →

Texas Roadhouse Island Cooler and Texas Roadhouse 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.