Last updated: April 25, 2026
Who Supplies Amlodipine Besylate, Hydrochlorothiazide, and Valsartan?
What are the typical supplier categories for these drugs?
These three actives are commonly sourced from two supply models:
- API manufacturer (generic active pharmaceutical ingredient, API): produces and sells the bulk drug substance (API) used by branded and generic product manufacturers.
- API distributor or trading house: sources API from one or more manufacturers and sells to downstream drug product makers, often with added logistics, documentation packs, and batch availability.
In practice, downstream manufacturers assemble a dual-source or multi-source portfolio across API manufacturers and distributors to manage lead time, regulatory expectations, and batch continuity.
Which suppliers are known for these specific actives?
Amlodipine Besylate (CAS 72980-86-8)
Commonly cited supplier set in the market includes large global API players and specialized generics manufacturers:
- Aurobindo Pharma (India)
- Cipla (India)
- Dr. Reddy’s Laboratories (India)
- Glenmark Pharmaceuticals (India)
- Hetero Labs / Hetero Drugs (India)
- Hikma Pharmaceuticals (UK-based with global operations; supplies generics including cardiovascular APIs)
- Intas Pharmaceuticals (India)
- Lupin (India)
- Mylan (Viatris) (US/Global; supplies generics and APIs via global network)
- Teva (Israel/Global; supplies APIs and generics)
- Torrent Pharmaceuticals (India)
- Zydus Lifesciences (India)
Hydrochlorothiazide (CAS 58-93-5)
Hydrochlorothiazide is an established, widely manufactured thiazide diuretic API. Supplier set typically overlaps with long-running generic API capacity:
- Aurobindo Pharma (India)
- Cipla (India)
- Dr. Reddy’s Laboratories (India)
- Glenmark Pharmaceuticals (India)
- Hetero Labs / Hetero Drugs (India)
- Lupin (India)
- Mylan (Viatris) (US/Global)
- Teva (Israel/Global)
- Torrent Pharmaceuticals (India)
- Zydus Lifesciences (India)
Valsartan (CAS 55125-31-8)
Valsartan is a higher-scrutiny ARB active due to earlier manufacturing quality events across the industry, so downstream sourcing often tightens documentation and audit cycles:
- Aurobindo Pharma (India)
- Cipla (India)
- Dr. Reddy’s Laboratories (India)
- Hetero Labs / Hetero Drugs (India)
- Lupin (India)
- Mylan (Viatris) (US/Global)
- Teva (Israel/Global)
- Torrent Pharmaceuticals (India)
- Zydus Lifesciences (India)
What should procurement teams look for in API suppliers (practical screening checklist)?
For each API above, procurement teams typically require the supplier pack to cover:
- Quality system: GMP compliance (commonly EMA/FDA/ICH-aligned documentation)
- Regulatory filings support: batch records, CoA format, typical control strategy references
- Supply continuity: ability to deliver multiple batches per quarter with lead-time commitments
- Impurity and control strategy: especially for valsartan, where control limits and consistent impurity profiles are central to batch release
- Packaging and labeling: compliance for intended markets (EU/US) and serialization readiness where required
Key Takeaways
- Supplier landscape: Amlodipine besylate and hydrochlorothiazide are broadly available from many global generic API manufacturers; valsartan also comes from multiple manufacturers but is usually sourced with stricter quality documentation due to prior industry attention.
- Best procurement approach: maintain multi-source coverage across reputable API manufacturers, supplemented by qualified distributors for allocation management and logistics continuity.
- Screening focus: GMP evidence, batch-to-batch consistency, impurity control documentation, and regulatory support packages determine whether an API supplier is procurement-ready.
FAQs
1) Are these actives typically available from multiple API manufacturers?
Yes. All three are widely manufactured generic APIs, with many established suppliers globally.
2) Are distributors common for these drugs’ API supply?
Yes. Many downstream drug product manufacturers use distributors to manage lead time, documentation packets, and batch availability.
3) Does valsartan require tighter supplier qualification than amlodipine or hydrochlorothiazide?
Yes. Valsartan is commonly subject to more stringent impurity-profile consistency and documentation expectations during qualification cycles.
4) What documentation matters most when selecting an API supplier?
GMP compliance evidence, CoA/batch records, impurity control strategy, and the ability to support regulatory submissions for the intended market.
5) What is the most common sourcing strategy used by formulators and drug product manufacturers?
Dual or multi-source procurement from primary API manufacturers, with distributor support for continuity and allocation coverage.
References
[1] PubChem. “Amlodipine Besylate.”
[2] PubChem. “Hydrochlorothiazide.”
[3] PubChem. “Valsartan.”
[4] EMA. “Guideline on Good Manufacturing Practice (GMP)”.
[5] FDA. “Current Good Manufacturing Practice for Drugs.”
