Does losartan contain wheat or gluten as an excipient?

We cross-check each losartan 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. We checked 10 product labels for losartan and didn't find any ingredients on our gluten red-flag list. Worth noting — this isn't the same as a manufacturer attestation. Formulations can change without notice, and starch sources aren't always disclosed.

Can different manufacturers' generic versions of losartan 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 losartan 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.

DailyMed checked live · reference data updated May 17, 2026 · 10 product labels screened

Is losartan gluten-free?

Nothing on the labels looks like gluten. We checked 10 product labels for losartan and didn't find any ingredients on our gluten red-flag list. Worth noting — this isn't the same as a manufacturer attestation. Formulations can change without notice, and starch sources aren't always disclosed.

Drug context

About losartan

Losartan is an angiotensin receptor blocker used for high blood pressure, sold under brand names including Cozaar.

Why this matters

Different manufacturers, different ingredients

Generics of losartan 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 10 we checked

01

Strides Pharma Science Limited nothing flagged on the label

US label (DailyMed) · LOSARTAN POTASSIUM 25 MG (LOSARTAN POTASSIUM) TABLET, FILM COATED LOSARTAN POTASSIUM 50… · label dated Jul 02, 2026

Inactive ingredients CELLULOSE, MICROCRYSTALLINE · CROSCARMELLOSE SODIUM · HYPROMELLOSES · MAGNESIUM STEARATE · MANNITOL · POVIDONE · PROPYLENE GLYCOL · TALC · TITANIUM DIOXIDE
View source label →
02

Unit Dose Solutions, Inc. nothing flagged on the label

US label (DailyMed) · LOSARTAN POTASSIUM TABLET, FILM COATED [UNIT DOSE SOLUTIONS, INC.] · label dated Jun 29, 2026

Inactive ingredients HYDROXYPROPYL CELLULOSE (1600000 WAMW) · HYPROMELLOSE, UNSPECIFIED · LACTOSE MONOHYDRATE · MAGNESIUM STEARATE · MICROCRYSTALLINE CELLULOSE · STARCH, CORN · TITANIUM DIOXIDE
View source label →
03

Unit Dose Solutions, Inc. nothing flagged on the label

US label (DailyMed) · LOSARTAN POTASSIUM TABLET, FILM COATED [UNIT DOSE SOLUTIONS, INC.] · label dated Jun 29, 2026

Inactive ingredients D&C YELLOW NO. 10 · FD&C BLUE NO. 2 · HYDROXYPROPYL CELLULOSE (1600000 WAMW) · HYPROMELLOSE 2910 (6 MPA.S) · LACTOSE MONOHYDRATE · LOW-SUBSTITUTED HYDROXYPROPYL CELLULOSE, UNSPECIFIED · MAGNESIUM STEARATE · MICROCRYSTALLINE CELLULOSE · STARCH, CORN · TITANIUM DIOXIDE · WATER
View source label →
04

St. Mary's Medical Park Pharmacy nothing flagged on the label

US label (DailyMed) · LOSARTAN POTASSIUM AND HYDROCHLOROTHIAZIDE TABLET, FILM COATED [ST. MARY'S MEDICAL PARK… · label dated Jun 23, 2026

Inactive ingredients D&C YELLOW NO. 10 · FD&C BLUE NO. 1 · LACTOSE MONOHYDRATE · MAGNESIUM STEARATE · MICROCRYSTALLINE CELLULOSE · POLYETHYLENE GLYCOL, UNSPECIFIED · POLYVINYL ALCOHOL, UNSPECIFIED · SILICON DIOXIDE · STARCH, CORN · TALC · TITANIUM DIOXIDE
View source label →
05

Coupler LLC nothing flagged on the label

US label (DailyMed) · LOSARTAN POTASSIUM TABLET, FILM COATED [COUPLER LLC] · label dated Jun 11, 2026

Inactive ingredients CARNAUBA WAX · CELLULOSE, MICROCRYSTALLINE · CROSPOVIDONE · HYDROXYPROPYL CELLULOSE, LOW SUBSTITUTED · HYPROMELLOSES · LACTOSE MONOHYDRATE · MAGNESIUM STEARATE · STARCH, CORN · TITANIUM DIOXIDE
View source label →
06

Camber Pharmaceuticals, Inc. nothing flagged on the label

US label (DailyMed) · LOSARTAN POTASSIUM AND HYDROCHLOROTHIAZIDE (LOSARTAN POTASSIUM AND HYDROCHLOROTHIAZIDE)… · label dated Jun 10, 2026

Inactive ingredients D&C YELLOW NO. 10 ALUMINUM LAKE · HYDROXYPROPYL CELLULOSE, UNSPECIFIED · HYPROMELLOSE 2910 (6 MPA.S) · LACTOSE MONOHYDRATE · MAGNESIUM STEARATE · MICROCRYSTALLINE CELLULOSE 101 · MICROCRYSTALLINE CELLULOSE 200 · SILICON DIOXIDE · STARCH, CORN · TITANIUM DIOXIDE
View source label →
07

St. Mary's Medical Park Pharmacy nothing flagged on the label

US label (DailyMed) · LOSARTAN POTASSIUM TABLET, FILM COATED [ST. MARY'S MEDICAL PARK PHARMACY] · label dated Jun 09, 2026

Inactive ingredients CARNAUBA WAX · CELLULOSE, MICROCRYSTALLINE · CROSPOVIDONE · HYDROXYPROPYL CELLULOSE, LOW SUBSTITUTED · HYPROMELLOSES · LACTOSE MONOHYDRATE · MAGNESIUM STEARATE · STARCH, CORN · TITANIUM DIOXIDE
View source label →
08

Coupler LLC nothing flagged on the label

US label (DailyMed) · LOSARTAN POTASSIUM TABLET, FILM COATED [COUPLER LLC] · label dated Jun 03, 2026

Inactive ingredients HYDROXYPROPYL CELLULOSE (1600000 WAMW) · HYPROMELLOSE, UNSPECIFIED · LACTOSE MONOHYDRATE · MAGNESIUM STEARATE · MICROCRYSTALLINE CELLULOSE · STARCH, CORN · TITANIUM DIOXIDE
View source label →
09

QPharma, Inc nothing flagged on the label

US label (DailyMed) · LOSARTAN POTASSIUM AND HYDROCHLOROTHIAZIDE TABLET, FILM COATED [QPHARMA, INC] · label dated May 25, 2026

Inactive ingredients D&C YELLOW NO. 10 · FD&C BLUE NO. 1 · LACTOSE MONOHYDRATE · MAGNESIUM STEARATE · MICROCRYSTALLINE CELLULOSE · POLYETHYLENE GLYCOL, UNSPECIFIED · POLYVINYL ALCOHOL, UNSPECIFIED · SILICON DIOXIDE · STARCH, CORN · TALC · TITANIUM DIOXIDE
View source label →
10

QPharma Inc nothing flagged on the label

US label (DailyMed) · LOSARTAN POTASSIUM AND HYDROCHLOROTHIAZIDE TABLET, FILM COATED [QPHARMA INC] · label dated May 25, 2026

Inactive ingredients D&C YELLOW NO. 10 ALUMINUM LAKE · FD&C BLUE NO. 1 ALUMINUM LAKE · LACTOSE MONOHYDRATE · MAGNESIUM STEARATE · MICROCRYSTALLINE CELLULOSE · POLYETHYLENE GLYCOL 3350 · POLYETHYLENE GLYCOL 4000 · POLYVINYL ALCOHOL, UNSPECIFIED · STARCH, CORN · TALC · TITANIUM DIOXIDE
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 →

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