Are Firehouse Subs Banana Peppers High in Histamine?

Firehouse Subs Banana Peppers

High histamine

Banana peppers are high in histamine because they are pickled in vinegar and preserved with sulfites.

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.

Histamine Liberator

These are sliced banana peppers packed in vinegar with preservatives.

Pickled peppers — the peppers are cured in acetic acid and vinegar, and that pickling process lets histamine accumulate, which lands them in the high range.
Sodium metabisulfite — the sulfite preservative used to keep them also reads high, backing up the same verdict.

If you want a lower-histamine crunch, fresh vegetable toppings are the way to go.

This rating comes from Firehouse Subs' 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 →

Firehouse Subs Banana Peppers and Firehouse Subs 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.