Is omeprazole gluten-free?
Nothing on the labels looks like gluten. We checked 10 product labels for omeprazole 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 omeprazole
Omeprazole is a proton-pump inhibitor used for acid reflux and ulcers, sold under brand names including Prilosec.
Why this matters
Different manufacturers, different ingredients
Generics of omeprazole 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
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01The Procter & Gamble Manufacturing Company nothing flagged on the label
Inactive ingredients CELLULOSE, MICROCRYSTALLINE · FD&C BLUE NO. 2--ALUMINUM LAKE · FD&C RED NO. 40 · GLYCERYL MONOSTEARATE · HYDROXYPROPYL CELLULOSE (1600000 WAMW) · HYPROMELLOSES · MAGNESIUM STEARATE · METHACRYLIC ACID - METHYL METHACRYLATE COPOLYMER (1:1) · MICA · POLYETHYLENE GLYCOL 6000 · POLYSORBATE 80 · POVIDONE K60 · SACCHARIN SODIUM · SODIUM STEARYL FUMARATE · STARCH, RICE · SUCROSE · TALC · TITANIUM DIOXIDE · TRIETHYL CITRATE
View source label → -
02The Procter & Gamble Manufacturing Company nothing flagged on the label
Inactive ingredients CELLULOSE, MICROCRYSTALLINE · FERRIC OXIDE RED · GLYCERYL MONOSTEARATE · HYDROXYPROPYL CELLULOSE · HYPROMELLOSES · MAGNESIUM STEARATE · PARAFFIN · POLYETHYLENE GLYCOL 6000 · POLYSORBATE 80 · POVIDONE K60 · SODIUM STEARYL FUMARATE · STARCH, RICE · SUCROSE · TALC · TITANIUM DIOXIDE · TRIETHYL CITRATE
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03Santarus, Inc.. nothing flagged on the label
Inactive ingredients CROSCARMELLOSE SODIUM · SODIUM STEARYL FUMARATE · SUCRALOSE · SUCROSE · XANTHAN GUM · XYLITOL
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04BluePoint Laboratories nothing flagged on the label
Inactive ingredients AMMONIA · BUTYL ALCOHOL · CARNAUBA WAX · FERRIC OXIDE RED · FERRIC OXIDE YELLOW · FERROSOFERRIC OXIDE · HYPROMELLOSE ACETATE SUCCINATE 06081224 (3 MM2/S) · HYPROMELLOSES · LACTOSE MONOHYDRATE · MONOETHANOLAMINE · POLYETHYLENE GLYCOL 3350 · POLYVINYL ALCOHOL · POVIDONE · PROPYLENE GLYCOL · SHELLAC · SODIUM LAURYL SULFATE · SODIUM STARCH GLYCOLATE TYPE A POTATO · SODIUM STEARATE · SODIUM STEARYL FUMARATE · TALC · TITANIUM DIOXIDE · TRIETHYL CITRATE
View source label → -
05Westminster Pharmaceuticals, LLC nothing flagged on the label
Inactive ingredients ALCOHOL · AMMONIA · BUTYL ALCOHOL · CROSCARMELLOSE SODIUM · FD&C BLUE NO. 1 · FERROSOFERRIC OXIDE · GELATIN, UNSPECIFIED · ISOPROPYL ALCOHOL · POTASSIUM HYDROXIDE · PROPYLENE GLYCOL · SHELLAC · SODIUM LAURYL SULFATE · SODIUM STEARYL FUMARATE · TITANIUM DIOXIDE
View source label → -
06Aurohealth LLC nothing flagged on the label
Inactive ingredients ANHYDROUS CITRIC ACID · CROSCARMELLOSE SODIUM · FD&C BLUE NO. 1 ALUMINUM LAKE · GELATIN, UNSPECIFIED · MAGNESIUM STEARATE · POLYSORBATE 80 · POTASSIUM SORBATE · PROPYLENE GLYCOL · SHELLAC · SODIUM LAURYL SULFATE · TITANIUM DIOXIDE
View source label → -
07Aurohealth LLC nothing flagged on the label
Inactive ingredients CROSPOVIDONE (35 .MU.M) · DEXTROSE, UNSPECIFIED FORM · FERRIC OXIDE RED · FERRIC OXIDE YELLOW · GLYCERYL MONOSTEARATE · HYDROXYPROPYL CELLULOSE (45000 WAMW) · HYDROXYPROPYL CELLULOSE (90000 WAMW) · HYPROMELLOSE 2910 (5 MPA.S) · HYPROMELLOSE 2910 (6 MPA.S) · MAGNESIUM STEARATE · METHACRYLIC ACID - ETHYL ACRYLATE COPOLYMER (1:1) TYPE A · MICROCRYSTALLINE CELLULOSE · POLYETHYLENE GLYCOL 4000 · POLYSORBATE 80 · SILICON DIOXIDE · SODIUM HYDROXIDE · SODIUM STEARYL FUMARATE · STARCH, CORN · SUCROSE · TALC · TITANIUM DIOXIDE · TRIETHYL CITRATE
View source label → -
08Fast Sold LLC nothing flagged on the labelView source label →
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09Amazon.com Services LLC nothing flagged on the label
Inactive ingredients ASCORBIC ACID · CETYL ALCOHOL · CROSPOVIDONE, UNSPECIFIED · DIMETHYLAMINOETHYL METHACRYLATE - BUTYL METHACRYLATE - METHYL METHACRYLATE COPOLYMER · FERRIC OXIDE RED · HYPROMELLOSE, UNSPECIFIED · MANNITOL · MICROCRYSTALLINE CELLULOSE · PROPYLENE GLYCOL · SILICON DIOXIDE · SODIUM STEARATE · SODIUM STEARYL FUMARATE · SORBITOL · SUCRALOSE · TALC · TITANIUM DIOXIDE · TRIETHYL CITRATE
View source label → -
10H2-Pharma, LLC nothing flagged on the label
Inactive ingredients ACETYLTRIBUTYL CITRATE · CROSCARMELLOSE SODIUM · FERRIC OXIDE RED · HYDROXYPROPYL CELLULOSE, UNSPECIFIED · HYPROMELLOSE, UNSPECIFIED · MAGNESIUM STEARATE · METHACRYLIC ACID AND ETHYL ACRYLATE COPOLYMER · MICROCRYSTALLINE CELLULOSE · POLYETHYLENE GLYCOL 3350 · POLYETHYLENE GLYCOL 400 · POLYETHYLENE GLYCOL 8000 · POLYVINYL ALCOHOL, UNSPECIFIED · SILICON DIOXIDE · STARCH, CORN · SUCROSE · TALC · TITANIUM DIOXIDE · TRIETHYL CITRATE
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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