Is lansoprazole gluten-free?
Some formulations contain gluten. Of 12 product labels we cross-checked, 2 list a gluten-derived ingredient outright. Generics from different manufacturers can differ — check which manufacturer's version your pharmacy dispensed before assuming any fill is safe.
Drug context
About lansoprazole
Lansoprazole is a proton-pump inhibitor used for acid reflux and ulcers, sold under brand names including Prevacid.
Why this matters
Different manufacturers, different ingredients
Generics of lansoprazole 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
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01Rugby Laboratories contains gluten
Gluten on the label: Manufacturer-declared gluten content (Matson et al. 2025 (peer-reviewed): the manufacturer of this NDC confirmed that the product contains gluten.)
View source label → -
02Rugby Laboratories contains gluten
Gluten on the label: Manufacturer-declared gluten content (Matson et al. 2025 (peer-reviewed): the manufacturer of this NDC confirmed that the product contains gluten.)
View source label → -
03Amazon.com Services LLC nothing flagged on the label
Inactive ingredients D&C RED NO. 28 · D&C YELLOW NO. 10 · FD&C BLUE NO. 1 · FD&C RED NO. 40 · GELATIN, UNSPECIFIED · HYPROMELLOSE, UNSPECIFIED · LOW-SUBSTITUTED HYDROXYPROPYL CELLULOSE, UNSPECIFIED · MANNITOL · MEGLUMINE · METHACRYLIC ACID AND ETHYL ACRYLATE COPOLYMER · POLYETHYLENE GLYCOL, UNSPECIFIED · POLYSORBATE 80 · SODIUM LAURYL SULFATE · TALC · TITANIUM DIOXIDE
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04Walgreens company nothing flagged on the label
Inactive ingredients D&C RED NO. 28 · FD&C BLUE NO. 1 · FD&C GREEN NO. 3 · FD&C RED NO. 40 · FERROSOFERRIC OXIDE · GELATIN · HYDROXYPROPYL CELLULOSE, UNSPECIFIED · LOW-SUBSTITUTED HYDROXYPROPYL CELLULOSE, UNSPECIFIED · MAGNESIUM CARBONATE · METHACRYLIC ACID AND ETHYL ACRYLATE COPOLYMER · POLYETHYLENE GLYCOL 6000 · POLYSORBATE 80 · SODIUM LAURYL SULFATE · STARCH, CORN · SUCROSE · TALC · TITANIUM DIOXIDE
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05Dr. Reddy's Laboratories Limited nothing flagged on the label
Inactive ingredients FD&C BLUE NO. 2 · FERRIC OXIDE RED · FERRIC OXIDE YELLOW · FERROSOFERRIC OXIDE · GELATIN · HYDROXYPROPYL CELLULOSE (110000 WAMW) · Hydroxypropyl Cellulose, Low Substituted · MAGNESIUM CARBONATE · METHACRYLIC ACID - ETHYL ACRYLATE COPOLYMER (1:1) TYPE A · POLYETHYLENE GLYCOL 6000 · POLYSORBATE 80 · SODIUM LAURYL SULFATE · STARCH, CORN · SUCROSE · TALC · TITANIUM DIOXIDE
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06Dr. Reddy's Laboratories Inc. nothing flagged on the label
Inactive ingredients D&C RED NO. 28 · FD&C BLUE NO. 1 · FD&C GREEN NO. 3 · FD&C RED NO. 40 · FERROSOFERRIC OXIDE · GELATIN · HYDROXYPROPYL CELLULOSE, UNSPECIFIED · LOW-SUBSTITUTED HYDROXYPROPYL CELLULOSE, UNSPECIFIED · MAGNESIUM CARBONATE · METHACRYLIC ACID AND ETHYL ACRYLATE COPOLYMER · POLYETHYLENE GLYCOL 6000 · POLYSORBATE 80 · SODIUM LAURYL SULFATE · STARCH, CORN · SUCROSE · TALC · TITANIUM DIOXIDE
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07Chain Drug Marketing Association nothing flagged on the label
Inactive ingredients D&C RED NO. 28 · FD&C BLUE NO. 1 · FD&C GREEN NO. 3 · FD&C RED NO. 40 · FERROSOFERRIC OXIDE · GELATIN · HYDROXYPROPYL CELLULOSE, UNSPECIFIED · LOW-SUBSTITUTED HYDROXYPROPYL CELLULOSE, UNSPECIFIED · MAGNESIUM CARBONATE · METHACRYLIC ACID AND ETHYL ACRYLATE COPOLYMER · POLYETHYLENE GLYCOL 6000 · POLYSORBATE 80 · SODIUM LAURYL SULFATE · STARCH, CORN · SUCROSE · TALC · TITANIUM DIOXIDE
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08Redpharm Drug nothing flagged on the label
Inactive ingredients AMMONIA · FERRIC OXIDE RED · FERRIC OXIDE YELLOW · FERROSOFERRIC OXIDE · GELATIN, UNSPECIFIED · HYDROXYPROPYL CELLULOSE (1600000 WAMW) · LOW-SUBSTITUTED HYDROXYPROPYL CELLULOSE, UNSPECIFIED · MAGNESIUM CARBONATE · METHACRYLIC ACID - ETHYL ACRYLATE COPOLYMER (1:1) TYPE A · POLYETHYLENE GLYCOL, UNSPECIFIED · POLYSORBATE 80 · PROPYLENE GLYCOL · RAW SUGAR · SHELLAC · SODIUM LAURYL SULFATE · STARCH, CORN · SUCROSE · TALC · TITANIUM DIOXIDE
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09Rugby Laboratories, Inc nothing flagged on the label
Inactive ingredients D&C RED NO. 28 · FD&C BLUE NO. 1 · FD&C GREEN NO. 3 · FD&C RED NO. 40 · FERROSOFERRIC OXIDE · GELATIN · HYDROXYPROPYL CELLULOSE, UNSPECIFIED · LOW-SUBSTITUTED HYDROXYPROPYL CELLULOSE, UNSPECIFIED · MAGNESIUM CARBONATE · METHACRYLIC ACID AND ETHYL ACRYLATE COPOLYMER · POLYETHYLENE GLYCOL 6000 · POLYSORBATE 80 · SODIUM LAURYL SULFATE · STARCH, CORN · SUCROSE · TALC · TITANIUM DIOXIDE
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10NorthStar Rx LLC nothing flagged on the label
Inactive ingredients Anhydrous Citric Acid · Aspartame · Cellulose, Microcrystalline · Crospovidone · Ethyl Acrylate and Methyl Methacrylate Copolymer Dispersion (2:1; 750000 MW 30% AQUEOUS) · Ferric Oxide Red · Ferric Oxide Yellow · Glyceryl Monostearate · Hydroxypropyl Cellulose (90000 Wamw) · Hypromellose 2910 (15 Mpa.S) · Hypromellose 2910 (3 Mpa.S) · Low-Substituted Hydroxypropyl Cellulose, Unspecified · Magnesium Carbonate · Magnesium Stearate · Mannitol · Methacrylic Acid and Ethyl Acrylate Copolymer · Polyethylene Glycol 6000 · Polysorbate 80 · Sodium Hydroxide · Strawberry · Sucrose · Triethyl Citrate · talc · titanium dioxide
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11Dr. Reddy's Laboratories Inc. nothing flagged on the label
Inactive ingredients D&C RED NO. 28 · FD&C BLUE NO. 1 · FD&C GREEN NO. 3 · FD&C RED NO. 40 · FERROSOFERRIC OXIDE · GELATIN · HYDROXYPROPYL CELLULOSE, UNSPECIFIED · LOW-SUBSTITUTED HYDROXYPROPYL CELLULOSE, UNSPECIFIED · MAGNESIUM CARBONATE · METHACRYLIC ACID AND ETHYL ACRYLATE COPOLYMER · POLYETHYLENE GLYCOL 6000 · POLYSORBATE 80 · SODIUM LAURYL SULFATE · STARCH, CORN · SUCROSE · TALC · TITANIUM DIOXIDE
View source label → -
12Retail Business Services, LLC nothing flagged on the label
Inactive ingredients D&C RED NO. 28 · D&C YELLOW NO. 10 · FD&C BLUE NO. 1 · FD&C RED NO. 40 · GELATIN, UNSPECIFIED · HYPROMELLOSE, UNSPECIFIED · LOW-SUBSTITUTED HYDROXYPROPYL CELLULOSE, UNSPECIFIED · MANNITOL · MEGLUMINE · METHACRYLIC ACID AND ETHYL ACRYLATE COPOLYMER · POLYETHYLENE GLYCOL, UNSPECIFIED · POLYSORBATE 80 · SODIUM LAURYL SULFATE · 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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