Quick answers
- What is Zosyn?
- Zosyn is a brand name of Piperacillin and tazobactam, a prescription medicine. The FDA NDC Directory lists 3 Zosyn products in 3 strengths and forms.
- Who makes Zosyn?
- Baxter Hlthcare Corp holds the FDA application for Zosyn (NDA050750, approved February 24, 1998).
- Is there a generic or store brand of Zosyn?
- Other products of Piperacillin and tazobactam are listed with the FDA, but none in exactly the same strength and form as a Zosyn product.
- Has Zosyn been recalled?
- No recall linked to Zosyn products (by their NDC code or label) appears in the FDA enforcement reports we use.
What Zosyn is
Each Zosyn product as listed in the FDA NDC Directory, by active ingredient, strength and form, with its official label. “Same medicine, other names” counts the other products with exactly the same active ingredients, strength and form (generic versions, store brands and other brands); inactive ingredients can differ.
Piperacillin and tazobactam · prescription medicine
| Strength and form | Product names | Same medicine, other names | Label |
|---|---|---|---|
| piperacillin sodium 2 g/50 mL · tazobactam sodium 0.25 g/50 mL injection, solution (intravenous) | Zosyn | None listed | DailyMed |
| piperacillin sodium 3 g/50 mL · tazobactam sodium 0.375 g/50 mL injection, solution (intravenous) | Zosyn | None listed | DailyMed |
| piperacillin sodium 4% · tazobactam sodium 0.5% injection, solution (intravenous) | Zosyn | None listed | DailyMed |
Its page lists every product and company, the FDA label’s uses and boxed warning, approvals, shortages and recalls: Piperacillin and tazobactam →
FDA approval
- NDA: New Drug Application: how a new (usually brand-name) medicine is approved.
| Application | Holder | First approved | Products |
|---|---|---|---|
| NDA050750 | Baxter Hlthcare Corp | February 24, 1998 | 3 |
Companies that list Zosyn
The company named on the package (holder, repackager or distributor), as listed in the FDA NDC Directory, with its number of Zosyn products.
- Baxter Healthcare Corporation3 products
Recalls
No recall linked to Zosyn products (by their NDC code or label) appears in the FDA enforcement reports.
Sources
- NDC Directory (openFDA) — U.S. Food and Drug Administration (FDA), FDA data exported October 30, 2026, retrieved October 31, 2026
- Drugs@FDA (openFDA) — U.S. Food and Drug Administration (FDA), FDA data exported October 30, 2026, retrieved October 31, 2026
- Drug labeling (SPL, openFDA) — U.S. Food and Drug Administration (FDA), FDA data exported October 30, 2026, retrieved October 31, 2026
- Drug recall enforcement reports (openFDA) — U.S. Food and Drug Administration (FDA), FDA data exported October 27, 2026, retrieved October 31, 2026
- NADAC (National Average Drug Acquisition Cost) 2026 — Centers for Medicare & Medicaid Services (CMS), data.medicaid.gov, list of November 4, 2026, retrieved November 7, 2026
Which names get a brand page: a name the NDC Directory lists for a medicine, held by one company (the FDA application holder, or the company named on most of its products), that is not just a description, and that is not the only product of its medicine.