Zyrtec contains no wheat-derived inactive ingredients per Kenvue, but it is not formally labeled gluten-free.
It depends on your sensitivity. Active cetirizine HCl is gluten-free by chemistry. Inactive ingredients (corn starch, lactose, magnesium stearate, hypromellose, polyethylene glycol, povidone, titanium dioxide, triacetin) contain no wheat-derived components — corn starch is explicitly corn-derived. Kenvue states Zyrtec is treated as gluten-free but cannot confirm the entire manufacturing process. For most celiacs Zyrtec is safe; severely sensitive consumers should consult a pharmacist.
Zyrtec is one of the cleaner OTC antihistamines for celiac consumers — Kenvue’s published inactive-ingredient list contains corn starch (not wheat starch), and the active cetirizine HCl is a synthetic small molecule with no gluten content. The caveat is the same as for most OTC drugs: Zyrtec is not formally labeled “Gluten Free,” and OTC drugs are not covered by the FDA’s food gluten-free labeling rule.
What’s in Zyrtec
Per Kenvue’s official Zyrtec ingredients page, Zyrtec 10 mg Tablets inactive ingredients are: corn starch, D&C Blue No. 1 aluminum lake, hypromellose, lactose monohydrate, magnesium stearate, polydextrose, polyethylene glycol, povidone, titanium dioxide, triacetin.
FDA Position on OTC Drugs and Gluten
Per the FDA’s Medications and Gluten page: “The FDA is aware of no oral drug products currently marketed in the United States that contain wheat gluten or wheat flour intentionally added as an inactive ingredient.” Worst-case estimated exposure per dose: 0.5 mg gluten — far below the typical celiac-safe daily threshold.
Cross-Contamination Risk
Manufacturing
Low
- Corn starch (corn-derived), no wheat-derived inactives per Kenvue.
- FDA estimates worst-case oral drug gluten at no more than 0.5 mg per unit.
- Not formally labeled “Gluten Free”; not GFCO-certified.
Pharmacy / Retail
Low
- Sealed manufacturer packaging — no cross-contact at retail.
- Generic cetirizine widely treated as GF; verify each store brand.
Home
Low
- Sealed bottle or blister pack; standard medicine-cabinet storage.
Zyrtec Variants — Quick Reference
- Zyrtec Allergy Tablets (10 mg) — most common; corn-derived inactives, no wheat
- Zyrtec Liqui-Gels — gelatin capsule shell + different inactive profile
- Zyrtec Dye-Free Chewable — different inactives including sweeteners and flavorings
- Zyrtec-D (with pseudoephedrine) — same active + decongestant; verify the Drug Facts label
- Children’s Zyrtec Liquid — liquid base with added flavorings; verify pediatric formulation separately
- Zyrtec Itchy Eye Drops — ophthalmic; different inactives entirely; gluten in eye drops not generally a celiac concern
Practical Options for Severely Sensitive Celiacs
- Read the current Drug Facts label for the specific Zyrtec variant.
- Call a pharmacist for lot-specific inactive-ingredient verification.
- Consider generic cetirizine from a store brand with voluntary “Gluten Free” labeling.
- Talk to your healthcare provider about alternative antihistamines (Allegra fexofenadine, Claritin loratadine, Xyzal levocetirizine) if Zyrtec gluten status remains unclear for your specific lot.
Frequently Asked Questions
Is Zyrtec gluten-free?
Zyrtec’s inactive ingredients per Kenvue’s published list contain no wheat-derived components — the corn starch is explicitly corn-derived. Active cetirizine HCl is gluten-free by chemistry. For most celiacs Zyrtec is considered safe. However, Zyrtec is not formally labeled “Gluten Free” — OTC drugs are not covered by FDA’s 21 CFR 101.91 food labeling rule. Severely sensitive celiacs should consult a pharmacist for lot-specific verification.
Is Zyrtec-D gluten-free?
Zyrtec-D combines cetirizine with pseudoephedrine in an extended-release formulation. The inactive-ingredient profile is similar to standard Zyrtec and includes no wheat-derived components per Kenvue. Same caveats apply — not formally labeled gluten-free, OTC drugs not covered by FDA food labeling rule.
Is Children’s Zyrtec gluten-free?
Children’s Zyrtec Allergy Liquid and Dye-Free Chewable use different inactive ingredients than the adult tablet — added flavorings, sweeteners, and liquid base. Generally treated as gluten-free but severely sensitive pediatric celiac patients should consult a pharmacist for the specific formulation in your hand.
Is “corn starch” in Zyrtec gluten?
No. Kenvue’s corn starch in Zyrtec is explicitly corn-derived. If it were wheat-derived, FDA labeling rules would require it to appear as “wheat starch” with a “Contains: Wheat” allergen callout. Zyrtec packaging carries no wheat callout.
Is generic cetirizine gluten-free?
The active cetirizine HCl is identical across Zyrtec and all generics. The inactive ingredients differ by manufacturer. Most major generic cetirizine brands (Costco Kirkland, Amazon Basic Care, CVS Health, Walgreens) use gluten-free fillers. Some store brands carry voluntary “Gluten Free” labeling that Zyrtec itself does not have.
Zyrtec vs Allegra vs Claritin for gluten-free?
All three are widely treated as gluten-free by celiac advocacy groups based on their published inactive-ingredient lists. None of the three is formally labeled “Gluten Free” — the FDA’s food gluten-free rule does not cover OTC drugs. For severely sensitive celiacs, the most reliable approach is to find a specific generic store-brand antihistamine that carries voluntary “Gluten Free” labeling, or to consult a pharmacist for lot-specific verification.