Last updated: April 23, 2026
Who Supplies Bacitracin Zinc and Polymyxin B Sulfate for Pharmaceuticals?
What is “Bacitracin Zinc” sourced from?
“Bacitracin zinc” is typically supplied as a topical antibiotic active ingredient produced by fermentation-derived bacitracin that is then formulated into a zinc salt form for stability and standardization. Supplier lists for this substance in commercial markets usually fall into two buckets: API manufacturers (bacitracin production and finishing) and chemical/API distributors (supply of finished zinc salt API or intermediates).
What is the typical supply chain for Bacitracin Zinc?
- Fermentation and isolation of bacitracin (microbial production).
- Salt formation to zinc salt standardization.
- API finishing (purification, milling, QC release to pharmacopeial specs or customer specs).
- Distribution to topical/OTC manufacturers (ointments, creams, irrigations).
What is “Polymyxin B Sulfate” sourced from?
“Polymyxin B sulfate” is derived from fermentation products of Paenibacillus polymyxa (classically marketed as polymyxin complex), followed by fractionation and purification to obtain polymyxin B, then conversion to sulfate salt.
What is the typical supply chain for Polymyxin B Sulfate?
- Fermentation to generate polymyxin complex.
- Purification and fractionation to enrich polymyxin B.
- Sulfate salt formation.
- API finishing to meet pharmacopeial and regulatory release requirements.
- Downstream topical injectable/irrigation formulation by finished-dosage manufacturers.
Which companies supply Bacitracin Zinc?
Below are suppliers that supply bacitracin zinc (or bacitracin zinc API forms) into pharmaceutical and consumer healthcare channels. Market availability can vary by grade and regulatory pathway.
| Company |
Product scope |
What they typically provide |
| Hikal Ltd. |
API and intermediates |
Bacitracin-related antibiotic API supply into topical and healthcare segments (grade-dependent). |
| Zhejiang Hisun Pharmaceutical Co., Ltd. |
API production |
Antibiotic-related API manufacturing capacity; bacitracin family supply has been sold in global markets through API channels. |
| TCI Chemicals / specialty chemical channels |
Distribution |
Zinc salt bacitracin or bacitracin-zinc form via specialty catalog distribution. |
| Local/regional API distributors |
Distribution |
Bacitracin zinc supply into finished-dose manufacturers, usually under contract packaging and distribution agreements. |
Which companies supply Polymyxin B Sulfate?
Polymyxin B sulfate is supplied by fewer fully integrated manufacturers, with broader availability through API distributors. The market is also influenced by regional regulatory approvals and confirmed supply.
| Company |
Product scope |
What they typically provide |
| Merck (MilliporeSigma) |
Chemical supply |
Polymyxin B sulfate for research and some industrial markets; availability varies by intended use (research vs pharmaceutical grade). |
| Thermo Fisher Scientific |
Distribution |
Polymyxin B sulfate sourcing for research and industrial channels (grade-dependent). |
| Specialty API distributors |
Distribution |
Polymyxin B sulfate API supply to topical/ophthalmic manufacturers where qualified suppliers are needed. |
| Fermentation-based API manufacturers (contract) |
API production |
Polymyxin B sulfate fermentation and purification for pharma-grade supply under supply agreements. |
How to qualify suppliers for these antibiotics
For bacitracin zinc and polymyxin B sulfate, supplier qualification is driven less by generic chemical similarity and more by grade, impurity profile, assay, and regulatory standing.
Qualification checklist that maps to procurement reality
- GMP status for API manufacture (site qualification).
- Pharmacopeial compliance: USP/EP monograph adherence (assay, potency, impurity limits).
- Salt-form verification (zinc salt for bacitracin zinc; sulfate for polymyxin B sulfate).
- Stability and container/closure fit for topical or aqueous systems.
- Supply continuity and batch release lead time.
- Documentation: CoA, CoC, DMF/CEP where applicable, change control history.
Bacitracin Zinc vs Polymyxin B Sulfate: sourcing profile
| Attribute |
Bacitracin Zinc |
Polymyxin B Sulfate |
| Typical use |
Topical antibiotic |
Topical and ophthalmic/irrigation use; also research-grade demand |
| Production route |
Fermentation bacitracin then zinc salt formation |
Fermentation polymyxin complex then purification to polymyxin B then sulfate formation |
| Supplier market |
More supplier and distributor breadth |
Fewer integrated pharma-grade producers; more distributor presence |
| Main procurement risk |
Salt form and impurity control |
Potency, impurity profile, and consistent fractionation |
Key Takeaways
- Bacitracin zinc and polymyxin B sulfate are fermentation-derived antibiotic APIs that require salt-form control and pharmacopeial-grade impurity management.
- Supplier ecosystems split into API manufacturers and GMP-qualified distributors; the most practical purchasing routes are through qualified pharma supply chains rather than broad chemical catalog availability.
- Qualification hinges on GMP site control, USP/EP compliance, potency/assay, and documented batch release rather than nameplate chemistry.
FAQs
1) Are bacitracin zinc and bacitracin the same?
No. “Bacitracin zinc” is the zinc salt form used for stability and standardized potency in pharmaceutical formulations, and suppliers may provide different forms (bacitracin base vs zinc salt) by grade.
2) Are polymyxin B sulfate and polymyxin B equivalent?
No. “Polymyxin B sulfate” is the sulfate salt form. Potency and formulation performance can differ based on salt form and grade.
3) Can I source these from general chemical suppliers?
Chemical catalog suppliers can exist, but pharma manufacturers typically require pharmaceutical grade, GMP manufacturing, and pharmacopeial/regulatory documentation for batch release.
4) What matters most during API procurement?
GMP compliance, assay/potency, impurity profile, salt form specification, CoA consistency, and stable lead times matter most.
5) Why do supply options differ between the two antibiotics?
Polymyxin B sulfate has fewer fully integrated pharma-grade supply sources in many regions, while bacitracin zinc often has broader distribution coverage through multiple API channels.
References (APA)
[1] Merck KGaA. (n.d.). Bacitracin zinc (product information). Merck.
[2] Merck KGaA. (n.d.). Polymyxin B sulfate (product information). Merck.
[3] Thermo Fisher Scientific. (n.d.). Polymyxin B sulfate (product information). Thermo Fisher Scientific.
[4] Hikal Ltd. (n.d.). API and antibiotic portfolio information. Hikal Ltd.
[5] Zhejiang Hisun Pharmaceutical Co., Ltd. (n.d.). Manufacturing and API portfolio information. Hisun Pharmaceuticals.
