Does furosemide contain wheat or gluten as an excipient?

We cross-check each furosemide 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 furosemide 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 furosemide 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 furosemide 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 furosemide

Furosemide is a loop diuretic used for heart failure and edema, sold under brand names including Lasix.

Why this matters

Different manufacturers, different ingredients

Generics of furosemide 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

Watson-doesn't test but uses corn starch manufacturer-attested gluten-free

Plogsted list · Furosemide (Watson-doesn't test but uses corn starch) · label dated 2017-04-28

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

Ivax manufacturer-attested gluten-free

Plogsted list · Furosemide (Ivax, Sandoz) · label dated 2017-04-28

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

Solco Healthcare LLC nothing flagged on the label

US label (DailyMed) · FUROSEMIDE TABLET [SOLCO HEALTHCARE LLC] · label dated Apr 22, 2026

Inactive ingredients LACTOSE MONOHYDRATE · MAGNESIUM STEARATE · STARCH, CORN · TALC
View source label →
04

ST. MARY'S MEDICAL PARK PHARMACY nothing flagged on the label

US label (DailyMed) · FUROSEMIDE TABLET [ST. MARY'S MEDICAL PARK PHARMACY] · label dated Apr 17, 2026

Inactive ingredients LACTOSE MONOHYDRATE · MAGNESIUM STEARATE · SILICON DIOXIDE · STARCH, CORN · TALC
View source label →
05

Redpharm Drug nothing flagged on the label

US label (DailyMed) · FUROSEMIDE TABLET [REDPHARM DRUG] · label dated Apr 16, 2026

Inactive ingredients LACTOSE MONOHYDRATE · MAGNESIUM STEARATE · SILICON DIOXIDE · STARCH, CORN · TALC
View source label →
06

AX Pharmaceutical Corp nothing flagged on the label

US label (DailyMed) · FUROSEMIDE POWDER [AX PHARMACEUTICAL CORP] · label dated Apr 15, 2026
View source label →
07

Heritage Pharmaceuticals Inc. d/b/a Avet Pharmaceuticals Inc. nothing flagged on the label

US label (DailyMed) · FUROSEMIDE INJECTION, SOLUTION [HERITAGE PHARMACEUTICALS INC. D/B/A AVET PHARMACEUTICAL… · label dated Mar 19, 2026

Inactive ingredients HYDROCHLORIC ACID · SODIUM CHLORIDE · SODIUM HYDROXIDE · WATER
View source label →
08

Coupler LLC nothing flagged on the label

US label (DailyMed) · FUROSEMIDE TABLET [COUPLER LLC] · label dated Mar 12, 2026

Inactive ingredients LACTOSE MONOHYDRATE · MAGNESIUM STEARATE · SODIUM STARCH GLYCOLATE TYPE A POTATO · STARCH, CORN
View source label →
09

Direct_Rx nothing flagged on the label

US label (DailyMed) · FUROSEMIDE TABLET [DIRECT_RX] · label dated Mar 10, 2026

Inactive ingredients ANHYDROUS LACTOSE · CELLULOSE, MICROCRYSTALLINE · MAGNESIUM STEARATE · SILICON DIOXIDE · SODIUM STARCH GLYCOLATE TYPE A POTATO · STARCH, CORN
View source label →
10

Marlex Pharmaceuticals, Inc. nothing flagged on the label

US label (DailyMed) · FUROSEMIDE TABLET [MARLEX PHARMACEUTICALS, INC.] · label dated Mar 05, 2026

Inactive ingredients LACTOSE MONOHYDRATE · MAGNESIUM STEARATE · STARCH, CORN
View source label →
11

Northwind Health Company, LLC nothing flagged on the label

US label (DailyMed) · FUROSEMIDE TABLET [NORTHWIND HEALTH COMPANY, LLC] · label dated Feb 26, 2026

Inactive ingredients LACTOSE MONOHYDRATE · MICROCRYSTALLINE CELLULOSE · SILICON DIOXIDE · SODIUM LAURYL SULFATE · SODIUM STARCH GLYCOLATE TYPE A POTATO · STARCH, CORN · STEARIC ACID
View source label →
12

Hikma Pharmaceuticals USA Inc. nothing flagged on the label

US label (DailyMed) · FUROSEMIDE TABLET FUROSEMIDE SOLUTION [HIKMA PHARMACEUTICALS USA INC.] · label dated Feb 23, 2026

Inactive ingredients D&C YELLOW NO. 10 · FD&C YELLOW NO. 6 · LACTOSE MONOHYDRATE · MICROCRYSTALLINE CELLULOSE · POTASSIUM CARBONATE · PROPYLENE GLYCOL · SACCHARIN SODIUM ANHYDROUS · SILICON DIOXIDE · SODIUM LAURYL SULFATE · SODIUM STARCH GLYCOLATE TYPE A POTATO · SORBITOL · STARCH, CORN · STEARIC ACID · WATER
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

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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.