Is Allegra Gluten Free?

What the Manufacturer Says 👇 (Plus a Labeled Alternative!)

AllerGuard LLC
October 12, 2025

We contacted Allegra’s maker (Opella) to get their statement on gluten status. According to the manufacturer, Allegra is not certified gluten free, as “there is no standardized certification process.” However, a sample of Allegra tested below 5 ppm gluten, and none of its ingredients are derived from wheat, barley, rye, oats, or spelt.

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Quick Rundown

According to the manufacturer, Allegra is not certified gluten free.
A sample tested below 5 ppm gluten, which is under the FDA detection threshold.
No ingredients are derived from wheat, barley, rye, oats, or spelt.
Contains corn-derived starch, but not gliadin gluten (the type that causes reactions in celiac disease).
No gluten free label appears on the packaging.
Labeled gluten free alternative below.

What The Manufacturer Stated:

“There is no standardized gluten-free certification process, so this product is not gluten-free certified. Even if the product is tested, manufacturing lines can change to accommodate alternate products. Therefore, to be certified as gluten-free, the entire site would need certification.

A sample from a commercially available product was tested for gluten. Gluten level results were less than 5 ppm, which is below the FDA minimum level that can be reliably detected.

None of ALLEGRA’s ingredients contain or are derived from barley, oats, rye, spelt, or wheat.

The source of pregelatinized starch is maize (corn) starch. Corn gluten is present in pregelatinized starch. Corn gluten is not gliadin gluten, which is what most people develop sensitivity to.

In most cases, knowing the source of the gluten and type of gluten is enough information to decide on product use. Please refer to your allergist if you have high sensitivity to gluten.”

Opella U.S. Medical Information

A Gluten Free Fexofenadine Alternative:

Try Costco Kirkland Signature Aller-Fex. They are labeled gluten free. Always verify on the current product box or bottle as formulas can change.

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Medical Disclaimer: This email is for informational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Medication formulas and inactive ingredients may change. Always confirm with your pharmacist or prescriber before taking any medication.

Allegra® is a registered trademark of Opella. AllerGuard is not affiliated with or endorsed by Opella.

Is Allegra Gluten Free?

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