Last updated: April 25, 2026
Which Suppliers Provide Hydrochlorothiazide and Lisinopril APIs?
Hydrochlorothiazide: who supplies the active ingredient (API)?
Hydrochlorothiazide is a widely used small-molecule diuretic. It is manufactured by multiple API producers and supplied through distributor channels. Common sourcing pathways include (1) direct purchase of API from an API manufacturer, or (2) procurement through pharmaceutical ingredient distributors that carry multiple brands and regulatory status options.
Common API supplier/distributor routes for hydrochlorothiazide
- Direct API manufacturers: typically supply compliance documentation (e.g., DMF/ASMF references, GMP certificates, and CoA support) based on the supplier’s filings.
- Authorized pharmaceutical ingredient distributors: source from one or more API manufacturers and sell to finished-dose or generics manufacturers.
- Contract manufacturers (CMOs) with API capability: some firms produce hydrochlorothiazide via synthesis and supply API under GMP.
Lisinopril: who supplies the active ingredient (API)?
Lisinopril is an ACE inhibitor supplied by multiple API manufacturers globally. The same procurement model applies: direct API sourcing from manufacturers or procurement through regulated ingredient distributors.
Common API supplier/distributor routes for lisinopril
- Direct API manufacturers: provide ASMF/DMF relationships and batch documentation.
- Authorized ingredient distributors: consolidate supply and offer multiple grades and packaging formats.
- API-capable contract manufacturers: some provide API supply alongside intermediates or route-specific production.
What supplier documentation matters for API procurement?
For both hydrochlorothiazide and lisinopril, buyers typically require a minimum compliance and traceability package:
- GMP compliance: current GMP certificate from the manufacturing site.
- Regulatory file support: DMF/ASMF reference or cross-reference capability where applicable.
- Batch release support: CoA, impurity profile, and specification confirmation for the target grade.
- Packaging and labeling: approved packaging configuration and traceability (lot/batch mapping).
Key Takeaways
- Hydrochlorothiazide and lisinopril APIs are sourced from multiple qualified routes: direct API manufacturers and regulated ingredient distributors.
- Supplier selection is driven by compliance deliverables (GMP status, DMF/ASMF alignment, and batch CoA/spec fit), not just price.
- Both APIs share the same procurement framework, enabling standardized vendor qualification across products.
FAQs
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Are hydrochlorothiazide and lisinopril usually sourced from more than one supplier?
Yes. Buyers commonly dual-source to manage continuity-of-supply risk and leverage lead-time or price differentials.
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What regulatory documents should accompany API orders?
Buyers typically expect GMP evidence, CoA per batch, and DMF or ASMF reference support aligned to intended markets.
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Can distributors supply both hydrochlorothiazide and lisinopril from different manufacturers?
Yes. Distributors often carry multiple upstream manufacturers and can provide alternative supply when lead times or batch availability shift.
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What level of documentation is typically needed for generics or finished-dose production?
Generics and finished-dose firms typically require full specification alignment, impurity controls, and traceable batch documentation suitable for regulatory submissions.
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Do API suppliers provide different grades or packaging formats?
Yes. Common variations include impurity/spec ranges, packaging size, and suitable shipping formats tied to regulatory expectations.
References
[1] U.S. FDA. “Drugs@FDA.” https://www.accessdata.fda.gov/scripts/cder/daf/
[2] European Medicines Agency (EMA). “European Public Assessment Reports (EPAR) and Medicines.” https://www.ema.europa.eu/en/medicines
[3] World Health Organization (WHO). “WHO Prequalification of Medicines.” https://extranet.who.int/prequal/
[4] U.S. FDA. “Drug Master Files (DMF).” https://www.fda.gov/drugs/guidance-compliance-regulatory-information/drug-master-files-dmf
