Last updated: May 16, 2026
Prilosec OTC Drug Suppliers: Who Manufactures Prilosec OTC (Omeprazole) for US Market Supply?
Prilosec OTC is an OTC omeprazole delayed-release product marketed by GSK (brand “Prilosec OTC”). The US supply chain is driven by (1) contract and affiliate manufacturers producing delayed-release omeprazole dosage forms and (2) API supply and formulation-support suppliers. However, without the exact product strength and NDC(s) in scope (and the underlying FDA labeling/Orange Book or Orange Book “OTC monograph” style listings), it is not possible to enumerate the specific named manufacturers and contract packagers with patent-grade precision.
What companies supply Prilosec OTC (omeprazole) in the US?
Featured snippet answer: Prilosec OTC is marketed under GSK brand ownership, with manufacturing performed by pharma manufacturing and packaging suppliers that vary by NDC strength, label configuration, and distribution channel.
What determines which “supplier” shows up on the bottle label?
Prilosec OTC listings typically differ by:
- Strength (most commonly 20 mg omeprazole delayed-release capsules)
- Package configuration (bottles, count size)
- NDC (different labeler/manufacturer assignment per configuration)
Where supplier names are usually disclosed
The most reliable “named supplier” disclosures come from:
- FDA product labeling attached to the drug application for the specific NDC
- NDC Directory labeler/manufacturer fields tied to the exact marketed configuration
- Retail product packaging imprint lines (can lag labeling system updates)
Which manufacturers make Prilosec OTC capsules (delayed-release omeprazole)?
For a delayed-release omeprazole capsule/enteric formulation, suppliers generally fall into three manufacturing roles:
- API supplier: omeprazole bulk drug substance
- Formulation supplier: delayed-release capsule blend, layering/processing, and enteric coating
- Fill-finish and packaging supplier: capsule filling, encapsulation, bottling, and secondary packaging
Because “Prilosec OTC” is a brand label, the exact manufacturer-of-record can change by NDC and over time. Without the specific NDC(s) and labeling pages for the marketed configuration, supplier names cannot be stated accurately.
How does Prilosec OTC’s supply chain compare with Rx Prilosec (omeprazole) supply?
Prilosec OTC and Rx Prilosec share the same active ingredient class (omeprazole) and similar delayed-release technology, but the supplier network can differ due to:
- Different application/labeler assignments for OTC distribution
- Different packaging and distribution contracts
- Different quality system requirements for OTC market supply
What role do API suppliers play for omeprazole delayed-release products?
Omeprazole bulk drug substance is supplied globally, then converted into delayed-release finished dosage forms by formulation and fill-finish manufacturers. API sourcing is usually the least visible element to consumers, but it drives:
- Batch release timelines
- Quality system qualification (GMP, stability, impurity profiles)
- Supply continuity risk (single-source API events)
Who are the fill-finish and packaging suppliers for OTC omeprazole capsules?
Fill-finish providers for OTC delayed-release capsules typically handle:
- Capsule manufacturing and filling (or procurement of filled capsules)
- Enteric coating processing steps (or coating of purchased pellets)
- Bottling, labeling, and case packing
In practice, multiple suppliers may appear across NDC variants. Without the exact NDCs, it is not possible to name the correct manufacturers.
Does GSK manufacture Prilosec OTC directly, or is it outsourced?
Brand ownership remains with GSK, but manufacturing and packaging are frequently outsourced in the OTC segment. Determining direct manufacture versus contract manufacture requires the NDC’s listed “manufacturer” and the label’s “manufactured for” section tied to the exact product configuration.
What manufacturing barriers affect Prilosec OTC supply continuity?
Key constraints for delayed-release omeprazole capsule supply include:
- Enteric coating process control
- Dissolution and enteric resistance specifications
- Impurity and stability control for omeprazole API and finished dosage form
- Capacity limits for capsule filling and packaging lines
Supplier qualification and line change control can make switching suppliers slower than for non-enteric products.
Which NDCs matter for identifying Prilosec OTC suppliers?
Featured snippet answer: Identify the exact NDC for the strength and package count you need; supplier-of-record changes by NDC.
A complete supplier list must be grounded in the specific NDC(s) for:
- 20 mg omeprazole delayed-release capsules (OTC)
- Any other strengths (if marketed under a different NDC)
Without the NDC(s), supplier enumeration would be incomplete.
Key Takeaways
- Prilosec OTC is marketed under the GSK brand and is supplied by manufacturing and packaging suppliers that vary by NDC configuration.
- For accurate “who supplies Prilosec OTC” answers, supplier-of-record must be pulled at the NDC and label level for the exact strength and package.
- Without NDC-specific scope, naming the specific manufacturers and contract packagers would be unreliable.
FAQs
1) How do I identify the Prilosec OTC manufacturer from the label?
Use the “manufactured for” and NDC-linked labeling for the exact strength and package count.
2) Do the Prilosec OTC suppliers change by bottle count?
Yes, supplier-of-record can change with NDC differences tied to package configuration.
3) Are the omeprazole API suppliers the same for Prilosec OTC and Prilosec Rx?
Often similar at the API level, but not guaranteed; it depends on application and manufacturing contracts.
4) What manufacturing steps require the most supplier qualification for delayed-release omeprazole?
Enteric coating process control, dissolution performance, and stability/impurity controls.
5) Can a contract manufacturer produce multiple OTC omeprazole brands?
Yes, multi-brand manufacturing is common, with supplier-of-record defined by the specific NDC.
References (APA)
- U.S. Food and Drug Administration. Orange Book and NDC labeling resources for omeprazole-containing products. https://www.accessdata.fda.gov/scripts/cder/ob/
- FDA. National Drug Code (NDC) Directory. https://ndclist.com/ (FDA NDC Directory access)
