Is Subway Artisan Flatbread High in Histamine?

Subway Artisan Flatbread

Moderate histamine

This flatbread is moderate in histamine, mostly from the wheat, yeast, and vinegar in the dough.

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

This is a simple flatbread of wheat flour, water, oil, and yeast, and nothing in it is high.

Wheat flour and yeast — both sit in the moderate range, which is typical for a leavened wheat base and keeps the whole flatbread moderate.
Vinegar, soybean oil, and oat bran — these each land moderate too, so they nudge things along rather than spiking the level.

This is one of the gentler bread choices on the menu compared with the cheese or sourdough options.

This rating comes from Subway'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 →

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