Are Subway Banana Peppers High in Histamine?

Subway Banana Peppers

High histamine

Subway's banana peppers are brined peppers with sulfites, both of which make them high in histamine.

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

This topping is banana peppers held in water, distilled vinegar, salt, calcium chloride, sodium metabisulfite, and turmeric.

Banana peppers — these are high on their own, and the brining and preserving process is what pushes them up.
Sodium metabisulfite — this sulfite preservative is also flagged high, adding to the reason this topping runs up rather than staying clean.

A fresh, unbrined topping is the way to keep your build lower.

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 →

Subway Banana Peppers and Subway 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.