Does clonazepam contain wheat or gluten as an excipient?

We cross-check each clonazepam product label against four data sources: DailyMed (FDA Structured Product Labels), the European Medicines Agency centrally-authorised medicines database, the Plogsted curated gluten-free drug list, and the 2024 Mangione et al. pediatric pharmacy NDC analysis. Inactive ingredients are scanned against a 146-entry red-flag dictionary covering wheat, barley, rye, malt, source-ambiguous starches, and FDA gluten-free attestation phrases. At least one manufacturer has formally attested their formulation contains no gluten. Of 12 labels we checked, 2 are confirmed by the maker and 10 show nothing flagged. Confirm the brand or generic on your bottle matches one of the attesting manufacturers below.

Can different manufacturers' generic versions of clonazepam have different gluten status?

Yes. Generics in the United States must use the same active ingredient as the brand, but they are not required to use the same inactive ingredients. Two generics of clonazepam from different manufacturers can use entirely different starch sources, binders, and fillers. A pharmacy may also switch which manufacturer it dispenses between fills without notifying you. Each manufacturer-specific entry below corresponds to a separately-filed product label.

Last verified May 17, 2026 · 12 product labels screened

Is clonazepam gluten-free?

Confirmed gluten-free by at least one manufacturer. At least one manufacturer has formally attested their formulation contains no gluten. Of 12 labels we checked, 2 are confirmed by the maker and 10 show nothing flagged. Confirm the brand or generic on your bottle matches one of the attesting manufacturers below.

Drug context

About clonazepam

Clonazepam is a long-acting benzodiazepine used for seizures and panic disorder, sold under brand names including Klonopin.

Why this matters

Different manufacturers, different ingredients

Generics of clonazepam use the same active ingredient, but they aren't required to use the same inactive ingredients. Your pharmacy may switch which manufacturer they dispense between fills, sometimes without telling you. The list below shows each manufacturer's product label as a separate entry, because that's the granularity that actually matters when you're celiac.

The labels

The 12 we checked

01

Apotex manufacturer-attested gluten-free

Plogsted list · Clonazepam (Apotex, Caraco, Mylan, Sandoz) · label dated 2017-04-28

Listed gluten-free in Plogsted Alpha List (2017-04-28)
View source label →
02

Barr manufacturer-attested gluten-free

Plogsted list · Clonazepam Disintegrating Tabs (Barr, Par) · label dated 2017-04-28

Listed gluten-free in Plogsted Alpha List (2017-04-28)
View source label →
03

Coupler LLC nothing flagged on the label

US label (DailyMed) · CLONAZEPAM TABLET [COUPLER LLC] · label dated May 07, 2026

Inactive ingredients CROSCARMELLOSE SODIUM · FD&C BLUE NO. 1 · LACTOSE MONOHYDRATE · MAGNESIUM STEARATE · MICROCRYSTALLINE CELLULOSE · SILICON DIOXIDE
View source label →
04

Par Health USA, LLC nothing flagged on the label

US label (DailyMed) · CLONAZEPAM TABLET, ORALLY DISINTEGRATING [PAR HEALTH USA, LLC] · label dated Apr 27, 2026

Inactive ingredients ASPARTAME · CROSPOVIDONE · MAGNESIUM STEARATE · MANNITOL · SILICON DIOXIDE · SODIUM LAURYL SULFATE · SORBITOL · TALC
View source label →
05

Northstar Rx LLC nothing flagged on the label

US label (DailyMed) · CLONAZEPAM TABLET [NORTHSTAR RX LLC] · label dated Jan 05, 2026

Inactive ingredients CROSCARMELLOSE SODIUM · D&C YELLOW NO. 10 ALUMINUM LAKE · FD&C BLUE NO. 1 ALUMINUM LAKE · FD&C BLUE NO. 2 ALUMINUM LAKE · FD&C YELLOW NO. 6 ALUMINUM LAKE · LACTOSE MONOHYDRATE · MAGNESIUM STEARATE · MICROCRYSTALLINE CELLULOSE · POLYETHYLENE GLYCOL 200
View source label →
06

H2-Pharma, LLC nothing flagged on the label

US label (DailyMed) · KLONOPIN (CLONAZEPAM) TABLET [H2-PHARMA, LLC] · label dated Dec 02, 2025

Inactive ingredients FD&C BLUE NO. 1 · FD&C BLUE NO. 2 · FD&C YELLOW NO. 6 · LACTOSE, UNSPECIFIED FORM · MAGNESIUM STEARATE · MICROCRYSTALLINE CELLULOSE · STARCH, CORN
View source label →
07

Alembic Pharmaceuticals Inc. nothing flagged on the label

US label (DailyMed) · CLONAZEPAM TABLET, ORALLY DISINTEGRATING [ALEMBIC PHARMACEUTICALS INC.] · label dated Nov 17, 2025

Inactive ingredients ASPARTAME · CROSPOVIDONE · MAGNESIUM STEARATE · MANNITOL · SILICON DIOXIDE · SODIUM LAURYL SULFATE · SORBITOL · TALC
View source label →
08

Solco Healthcare LLC nothing flagged on the label

US label (DailyMed) · CLONAZEPAM TABLET [SOLCO HEALTHCARE LLC] · label dated Sep 08, 2025

Inactive ingredients CROSCARMELLOSE SODIUM · D&C YELLOW NO. 10 · FD&C BLUE NO. 1 · LACTOSE MONOHYDRATE · MAGNESIUM STEARATE · MICROCRYSTALLINE CELLULOSE · SILICON DIOXIDE
View source label →
09

Cardinal Health 107, LLC nothing flagged on the label

US label (DailyMed) · CLONAZEPAM TABLET [CARDINAL HEALTH 107, LLC] · label dated Apr 30, 2026

Inactive ingredients CROSCARMELLOSE SODIUM · D&C YELLOW NO. 10 ALUMINUM LAKE · FD&C BLUE NO. 1 ALUMINUM LAKE · LACTOSE MONOHYDRATE · MAGNESIUM STEARATE · MICROCRYSTALLINE CELLULOSE · SILICON DIOXIDE
View source label →
10

REMEDYREPACK INC. nothing flagged on the label

US label (DailyMed) · CLONAZEPAM TABLET [REMEDYREPACK INC.] · label dated Apr 08, 2026

Inactive ingredients D&C YELLOW NO. 10 ALUMINUM LAKE · FD&C BLUE NO. 1 ALUMINUM LAKE · LACTOSE MONOHYDRATE · MAGNESIUM STEARATE · MICROCRYSTALLINE CELLULOSE · POVIDONE K90 · STARCH, CORN
View source label →
11

Preferred Pharmaceuticals Inc. nothing flagged on the label

US label (DailyMed) · CLONAZEPAM TABLET [PREFERRED PHARMACEUTICALS INC.] · label dated Apr 02, 2026

Inactive ingredients CROSCARMELLOSE SODIUM · LACTOSE MONOHYDRATE · MAGNESIUM STEARATE · MICROCRYSTALLINE CELLULOSE · SILICON DIOXIDE
View source label →
12

Proficient Rx LP nothing flagged on the label

US label (DailyMed) · CLONAZEPAM TABLET [PROFICIENT RX LP] · label dated Mar 16, 2026

Inactive ingredients ANHYDROUS LACTOSE · D&C YELLOW NO. 10 ALUMINUM LAKE · FD&C BLUE NO. 1 ALUMINUM LAKE · MAGNESIUM STEARATE · MICROCRYSTALLINE CELLULOSE · SILICON DIOXIDE · SODIUM LAURYL SULFATE · STARCH, CORN
View source label →

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Background

What “gluten in a medication” actually means

Gluten enters drugs through their excipients — the inactive ingredients used to bind, coat, fill, or stabilize the dose. The main concern is wheat starch as a filler. Source-ambiguous starches (plain “starch”, pregelatinized starch, sodium starch glycolate, modified starch) get flagged for verification because their botanical origin isn't always disclosed on the label.

The 2024 Mangione et al. pediatric NDC analysis (689 NDCs across the top 100 pediatric medications) found 1.5% contained gluten outright; another 25.7% couldn't be confirmed either way. Liquid and oral-suspension formulations carry disproportionate risk because wheat starch is a common thickener. Full methodology →

Keep checking

Other drugs people look up

Important. This page is informational. Drug labels can change without notice; a manufacturer attestation is point-in-time, not a warranty. If you have celiac disease and your pharmacy switches manufacturers, re-screen the new label before taking the dispensed product. For a definitive answer, call the manufacturer's medical-information line with the NDC code from your prescription bottle.