Is Sonic Texas Toast High in Histamine?

Sonic Texas Toast

Moderate histamine

A Sonic Texas toast is moderate in histamine, from the enriched wheat flour and yeast.

Fast food is cooked in batches and held warm rather than made when you order it, so it is rarely as fresh as something cooked at home. That matters here because histamine builds up as protein foods sit, which means the same item can affect you differently depending on how long it waited.

Gluten Dairy

This is a thick slice of buttery bread made from enriched wheat flour, palm oil, sugar, yeast, and non-fat milk.

Enriched wheat flour and yeast — it is a thick yeast-raised enriched-wheat bread, and both the flour and the yeast sit at a moderate level, which is what sets the whole slice in the middle.
The fats are milder — the palm oil and buttery flavor are not the drivers; the level really tracks the yeasted flour bread itself.

The moderate level is built into the bread, so a plainer fresh-bread choice is the gentler route on the menu.

This rating comes from Sonic's own published ingredient statement, read on August 23, 2026. Restaurant recipes vary by location and change over time, so always check the current listing: source 1, source 2. How we rate foods →

Sonic Texas Toast and Sonic 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.