Is Sonic SONIC Smasher™ Patty High in Histamine?

Sonic SONIC Smasher™ Patty

Low histamine

The Smasher patty is just seasoned Angus beef, and on its own it lands low in histamine.

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.

This is a simple seasoned beef patty with nothing aged or fermented in it.

Fresh beef base — the patty is Angus beef with salt, spices, and spice extractives, none of which are flagged as histamine drivers, so the meat itself stays low.
Watch what goes around it — the patty is the clean part, but toppings like aged cheese, tomato, and sauces are usually what push a finished burger up, so the build matters more than the meat.

Keep the patty and choose milder toppings to keep the whole thing low.

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 SONIC Smasher™ Patty 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.