Low-Calorie Options at Firehouse Subs
GLP-1 medications reduce appetite, which means every calorie needs to work harder. These Firehouse Subs items come in under 400 calories while still delivering meaningful nutrition.
Quick answer
The first 3 low calorie results at Firehouse Subs are Firehouse Subs Pickle Spear (5 calories, 0g protein), Firehouse Subs Onion (19 calories, 1g protein), and Firehouse Subs Black Olives for Salad (25 calories, 0g protein).
Compare serving-level nutrition in the table below; formulations and serving sizes can change.
What this Firehouse Subs comparison shows
This page compares 24 currently indexed low calorie Firehouse Subs items. Their GLP-1 Food Scores range from 38 to 82, with a median of 65. The highest-ranked result is Firehouse Subs Pickle Spear at 65/100, based on its listed serving-level nutrition.
For the nutrient defining this list, values run from 5 calories to 180 calories; the median is 123 calories. Serving sizes and formulations can differ, so open an item before ordering and confirm current details with the restaurant.
Results use the published scoring methodology and nutrition source policy. This is a nutrition comparison, not medical advice.
How to interpret this low calorie list
24 of 70 indexed Firehouse Subs records (34%) meet this page’s numeric screen. Inclusion only means that the listed serving satisfies the category rule; it does not establish that the item is a complete meal, medically appropriate, well tolerated, or better than every excluded item.
Results remain ordered by the full six-factor GLP Food Score rather than by calories alone. That distinction matters because two qualifying items can differ substantially in protein, net carbohydrates, sugar, fiber, total fat and calories. Use the comparison table to shortlist options, then open the item record to verify its serving basis, source status, tradeoffs and current restaurant details.