Is Firehouse Subs Honey Mustard High in Histamine?

Firehouse Subs Honey Mustard

High histamine

Honey mustard runs high in histamine, driven by the dressing itself plus soybean oil and paprika.

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.

A sweet mustard blend of vinegar, dijon, honey, egg yolk, and spices.

Honey mustard base — the dressing itself is the high driver here, so it carries that level as a whole.
Supporting drivers — the soybean oil and the oleoresin paprika each land moderate, adding to an already high condiment.

Leaving it off is the simplest way to keep your order lower.

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 Honey Mustard 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.