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Piperacillin and Tazobactam 2 g/10mL; .25 g/10mL Injection, Powder, For Solution — NDC 63323-309-26 (Billing 63323-0309-26)

by Fresenius Kabi USA, LLC · 10 VIAL in 1 BOX / 10 mL in 1 VIAL

This is a package of Piperacillin and Tazobactam 2 g/10mL; .25 g/10mL Injection, Powder, For Solution from Fresenius Kabi USA, LLC, marketed since Oct 2009 and currently FDA-listed.

NDC 63323-0309-26
🏷️ FDA NDC (as labeled) 63323-309-26 billing pads the product segment with a zero
This package
Contains10 mL in 1 vial Pack sizes2 compare ↓
Product page 63323-0309-20 Also comes in: 10 vials 63323-309-20
Rx only Generic On market Non-controlled ⇄ Compare with another NDC
🗂️ FDA directory synced Oct 1, 2026 · this listing last changed Oct 1, 2026 · sources: openFDA · FDA label (DailyMed) · FDA Orange & Purple Book · First Databank · CMS NADAC, ASP, Medicare & Medicaid · RxNorm
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NDC database record

One package, one record: these facts belong to NDC 63323-309-26 alone.

Record
FDA NDC Directory package listing · Human prescription drug
Code segments
63323 labeler · 309 product · 26 package
Package marketed since
Oct 13, 2009
Sample package
No — commercial package
Listing certified through
Dec 31, 2026
Barcode (UPC-A, from the NDC)
3 6332330926 8
FDA record last changed
Oct 1, 2026

Identity & classification

Regulatory identifiers FDA, NLM and CMS codes for this package

FDA NDC (as labeled) 63323-309-26
Product NDC 63323-309
11-digit billing NDC 63323030926
NCPDP billing unit EA — each (per item)
RxCUI 1659131, 1659137, 1659149
UNII UXA545ABTT, M98T69Q7HP
Application # ANDA065523
SPL Set ID ba87ade3-4d41-40c0-9f6a-27e121a4136d
Established class (EPC) Penicillin-class Antibacterial; beta Lactamase Inhibitor
Mechanism of action beta Lactamase Inhibitors
Chemical class Penicillins
DEA schedule Non-controlled
Marketing category ANDA
Marketing status On market
FDA listing status Listed (active directory)
Marketing start 2009-10-13
Route INTRAVENOUS
Dosage form INJECTION, POWDER, FOR SOLUTION
Substance PIPERACILLIN SODIUM; TAZOBACTAM SODIUM
TE code (Orange Book) AP · RLD · RS

Drug-database identifiers Medi-Span GPI and First Databank GCN / HICL / AHFS classification

GPI-14 01990002702120
GPI class Piperacillin Sod-Tazobactam So
GCN Seq No 021185
GCN 53280
HICL code 008738
Ingredient (HICL) Piperacillin Sodium/Tazobactam
HIC1 code W
Therapeutic class — broad (HIC1) Anti-Infecting Agents
HIC2 code W1
Therapeutic class — intermediate (HIC2) Antibiotics
HIC3 code W1A
Therapeutic class — specific (HIC3) Penicillin Antibiotics
AHFS code 08:12.16.16
AHFS class Extended-Spectrum Penicillins
FDB label name PIPERACIL-TAZOBACT 2.25 GM VL
FDB brand name Piperacillin-Tazobactam
Legend status F — Federal legend — prescription drug or device
Quick answers
  • GSN (GCN sequence number): 021185
  • GCN: 53280
  • GPI-14 (Medi-Span): 01990002702120
  • HICL (First Databank): 008738
  • AHFS class code: 08:12.16.16
  • RxCUI (RxNorm): 1659131
Why two NDCs? The FDA registers this code as 63323-309-26 — a 5-3-2 layout, and that's what's printed on the package and shown on DailyMed. For insurance claims, every NDC is standardized to a uniform 11-digit 5-4-2 format by adding a zero to the product segment → 63323-0309-26. Same drug, same package — only the format differs.
Where does this data come from?
Identifiers from the FDA openFDA NDC Directory and Structured Product Labeling; RxCUI from RxNorm (NLM); GPI from Medi-Span; GCN / HIC / AHFS / legend from First Databank.

RxNorm drug class

This medicine belongs to the beta Lactamase Inhibitor class.

Pharmacologic class beta Lactamase Inhibitor
Drug family (ATC) Beta-lactamase inhibitors
How it works beta Lactamase Inhibitors
Where does this data come from?
Therapeutic classes from RxNorm RxClass (U.S. National Library of Medicine) — Established Pharmacologic Class (FDA), ATC drug family (WHO) and mechanism of action, matched by this product’s RxCUI.

Clinical

Label name PIPERACIL-TAZOBACT 2.25 GM VL Ingredient Piperacillin Sodium/Tazobactam
📗 Our plain-language guide HelloPharmacist
  • It treats certain serious bacterial infections, such as abdominal infections, pneumonia, skin infections, and female pelvic infections. Which ones apply depends on your age. It doe...
  • It is given through a vein, usually over about 30 minutes, every 6 to 8 hours. Your care team handles the dosing and timing. They set the length of treatment, often 7 to 14 days.
  • Diarrhea, constipation, nausea, headache, trouble sleeping, and mild rash are the most common. Most are mild. Tell your nurse if anything bothers you.
  • Tell your team immediately about trouble breathing, swelling, a spreading rash or peeling skin, seizures, muscle pain with dark urine, or unusual bleeding. Also report severe diarr...
📖 Read our full Piperacillin and Tazobactam Injection guide →

Supplement & herbal interactions

🌿 Drug–supplement interaction checker →
Where does this data come from?
Plain-language summary from MedlinePlus (U.S. National Library of Medicine); supplement & herbal interactions and nutrient depletion data from the Natural Medicines database; our full guide is HelloPharmacist editorial content.

Pricing

A drug doesn't have one price. Each row is a different public payment system, and none is what you'd pay at the counter — that depends on your insurance. The ⓘ on each row explains what it measures.

Price systemPer mLPer package
Retail pharmacies payNADAC · weekly Not in the retail survey — common for institutional, discontinued, or low-volume packs.
Medicaid paysCMS SDUD · 12 mo No recent Medicaid claims on file for this NDC — rare and low-volume NDCs are suppressed in the public data.
Medicare drug plans payPart D · quarterly No Part D plan price is available for this NDC in our data.
ℹ️
No price is published for this exact package yet. CMS surveys NADAC per package size, so a different pack of the same drug often has one.
Try another pack size: 10 vials
Where does this data come from?
NADAC (National Average Drug Acquisition Cost) is the CMS weekly pharmacy-acquisition-cost survey — what pharmacies pay. ASP (Average Sales Price) is the CMS Medicare Part B drug-payment file, published quarterly. Medicaid pays is computed by us from CMS State Drug Utilization Data (total reimbursed ÷ units, trailing 12 months) — gross of rebates and inclusive of dispensing fees, so it reflects what Medicaid paid, not an acquisition cost. Medicare drug plans pay is the median negotiated point-of-sale unit cost across plans listing this NDC in the CMS quarterly Prescription Drug Plan pricing files, before rebates. The VA pays is the federal contract price (FSS, and the statutory Big 4 ceiling where listed) from the VA National Acquisition Center pharmaceutical price file. All are free public government data; each measures a different payer, so the figures are not directly comparable.

Packaging — all sizes for this product

Package NDCDescription Marketing startMarketing endStatus
63323-0309-20 63323-309-20 Main listing 10 VIAL in 1 BOX / 10 mL in 1 VIAL 2009-10-13 — Active
63323-0309-26 You're viewing this 10 VIAL in 1 BOX / 10 mL in 1 VIAL 2009-10-13 — Active

Pack size FAQ

What quantity is in this package?
This package is listed by the FDA — 10 vial in 1 box / 10 ml in 1 vial.
What NDC number is used to bill for this package of Piperacillin and Tazobactam 2 g/10mL; .25 g/10mL Injection, Powder, For Solution?
Use the 11-digit billing form listed in the identifiers section of this page. Pharmacy and medical claims use the 11-digit form; the FDA label may print a shorter form of the same code.

Therapeutic equivalents

ProductLabelerPackNADAC/unitTEStatusPrice vs. this
Zosyn in Galaxy Containers 250 mg/50mL; 2 g/50mL 00206-8860-02 Wyeth 50 ml — — Discontinued —
Piperacillin and Tazobactam and Sodium Chloride 250 mg/50mL; 2 g/50mL 00264-3446-11 B. 50 ml — — FDA listed —
Zosyn 2 g/50mL; .25 g/50mL 00338-9632-24 Baxter 50 ml — — FDA listed —
Piperacillin and Tazobactam 2 g/10mL; .25 g/10mL 00409-3383-02 Hospira, 10 vials — AP Discontinued —
Piperacillin and Tazobactam 2 g/10mL; .25 g/10mL 00781-3110-95 Sandoz 10 vials — AP FDA listed —
Piperacillin and Tazobactam 2 g/10mL; .25 g/10mL 00781-9210-95 Sandoz 10 vials — AP Discontinued —
Piperacillin and Tazobactam 2 g/10mL; .25 g/10mL 35369-0502-02 Shandong 10 vials — AP FDA listed —
Piperacillin and Tazobactam 2 g/1; .25 g 44567-0801-10 WG 10 vials — AP FDA listed —
Piperacillin and Tazobactam 2 g/1; .25 g 55150-0119-30 Eugia 10 vials — AP FDA listed —
Piperacillin and Tazobactam 2 g/10mL; .25 g/10mL 60505-6156-04 Apotex 10 vials — AP FDA listed —
Piperacillin and Tazobactam 2 g/10mL; .25 g/10mLthis 63323-0309-26 Fresenius 10 vials — AP FDA listed —
Piperacillin and Tazobactam 2 g/10mL; .25 g/10mL 63323-0981-21 Fresenius 10 vials — AP FDA listed —
Piperacillin and Tazobactam 2 g/10mL; .25 g/10mL 65219-0434-20 Fresenius 10 vials — AP FDA listed —
Piperacillin and Tazobactam 2 g/10mL; .25 g/10mL 68001-0506-30 BluePoint 10 vials — AP FDA listed —
Piperacillin And Tazobactam 2 g/10mL; .25 g/10mL 81284-0151-10 Provepharm 10 vials — AP FDA listed —
piperacillin and tazobactam 2 g/10mL; .25 g/10mL 83270-0301-10 ONESOURCE 10 vials — AP FDA listed —
Piperacillin and Tazobactam 2 g/10mL; .25 g/10mL 83634-0104-20 Avenacy, 10 vials — AP FDA listed —
About this product: this is a generic version of the medicine. FDA equivalence ratings are shown when available, and other versions are listed above, least expensive first.
Where does this data come from?
Equivalents are other NDCs of the same ingredient, form and route from the openFDA NDC Directory, ranked least-expensive-first by NADAC. Therapeutic-equivalence (AB) ratings come from the FDA Orange Book; biologics use the FDA Purple Book for biosimilar & interchangeable status.

Availability & generic status

🏛️
2009
On the market since
Oct 2009
📍
2026
Currently FDA-listed
17 years listed
🔓
·
Generic on the market
this product is a generic
✅This is a generic drug

This product is an FDA-approved generic. Other versions of the same drug are listed under Therapeutic equivalents, least expensive first.

Where does this data come from?
Patents and exclusivity from the FDA Orange Book (small-molecule drugs), refreshed from public FDA data. Generic launch timing is an estimate, not a guarantee.

Inactive Ingredients / Excipients

Inactive ingredients, also called excipients, are components of the drug product other than the active ingredient. They may include fillers, dyes, coatings, preservatives, flavors, or other formulation ingredients.

🧪 Avoiding an ingredient? See Piperacillin and Tazobactam Injection inactive ingredients by manufacturer: every current product's list side by side, so you can ask your pharmacy for the version that does not list it.

Loading inactive ingredients from the official FDA label in the background. No external source is being called by this page request.
Where does this data come from?
Source: official FDA Structured Product Labeling (SPL) via DailyMed and the openFDA label index. Structured IACT rows and label-wide narrative are kept separate; availability and product-level specificity depend on the submitted label.

Inactive ingredient FAQ

Are inactive ingredients the same for every manufacturer?
No. Inactive ingredients can differ by manufacturer, dosage form, strength, and package / product version.
Why might an inactive ingredient be missing?
Some SPLs do not provide a complete structured inactive-ingredient list, and older or unusual labels may only include the information in narrative text.
Can inactive ingredients matter?
Yes. They can matter for allergies, intolerances, dyes, gluten / lactose concerns, preservatives, and formulation differences — but confirm with a pharmacist or the manufacturer when it’s clinically important.

Manufacturer & labeler

LabelerFresenius Kabi USA, LLC
Application holderISTITUTO BIOCHIMICO ITALIANO SPA
FDA applicationANDA065523 (ANDA)
Labeler code63323
First marketedOct 2009
Product typeHuman Prescription Drug
Portfolio554 products on file

More NDCs from Fresenius Kabi USA, LLC labeler code 63323

The labeler markets the product; the application holder owns the FDA approval. They’re often the same company but can differ (e.g. a repackager or an authorized generic). A mailing address / phone appears here when the manufacturer includes it in the product’s FDA label (not all do).
Where does this data come from?
Labeler, application holder and registered establishment from the FDA openFDA NDC Directory and Drugs@FDA; address/contact from the product’s FDA label.

Full prescribing information FDA SPL

The complete FDA label for this product — the official prescribing information, verbatim, section by section. Very long sections are excerpted here and marked; the full text is on DailyMed (linked in the sources below). Jump with a chip, search within the label, or expand everything.
🎯 Indications and Usage ⏱️ Dosage and Administration 💊 Dosage Forms and Strengths ⛔ Contraindications ⚠️ Warnings and Cautions 🤒 Adverse Reactions 🔄 Drug Interactions 👥 Use in Specific Populations 🤰 Pregnancy 🧒 Pediatric Use 🧓 Geriatric Use 🆘 Overdosage 🧬 Clinical Pharmacology 🧬 Mechanism of Action 📦 How Supplied / Storage and Handling 📋 Description 💬 Information for Patients 🍼 Nursing Mothers 🧬 Pharmacokinetics 🧬 Pharmacodynamics 🧪 Nonclinical Toxicology 📄 Carcinogenesis, Mutagenesis, Impairment of Fertility 📚 References 📄 Package Label / Principal Display Panel
🎯 Indications and Usage ~2 min read ▾

1 INDICATIONS AND USAGE Piperacillin and tazobactam for injection is a combination product consisting of a penicillin-class antibacterial, piperacillin, and a β-lactamase inhibitor, tazobactam, indicated for the treatment of patients with moderate to severe infections caused by susceptible isolates of the designated bacteria in the conditions listed below. Piperacillin and Tazobactam for Injection is a combination penicillin-class antibacterial and β-lactamase inhibitor indicated for treatment of: Intra-abdominal infections ( 1.1 ) Skin and skin structure infections ( 1.2 ) Female pelvic infections ( 1.3 ) Community-acquired pneumonia ( 1.4 ) Nosocomial pneumonia ( 1.5 )

1.1Intra-abdominal Infections Appendicitis (complicated by rupture or abscess) and peritonitis caused by β-lactamase producing isolates of Escherichia coli or the following members of the Bacteroides fragilis group: B. fragilis , B. ovatus , B. thetaiotaomicron , or B. vulgatus . The individual members of this group were studied in fewer than 10 cases.

1.2Skin and Skin Structure Infections Uncomplicated and complicated skin and skin structure infections, including cellulitis, cutaneous abscesses and ischemic/diabetic foot infections caused by β-lactamase producing isolates of Staphylococcus aureus .

1.3Female Pelvic Infections Postpartum endometritis or pelvic inflammatory disease caused by β-lactamase producing isolates of Escherichia coli .

1.4Community-acquired Pneumonia Community-acquired pneumonia (moderate severity only) caused by β-lactamase producing isolates of Haemophilus influenzae .

1.5Nosocomial Pneumonia Nosocomial pneumonia (moderate to severe) caused by β-lactamase producing isolates of Staphylococcus aureus and by piperacillin/tazobactam-susceptible Acinetobacter baumannii , Haemophilus influenzae , Klebsiella pneumoniae , and Pseudomonas aeruginosa (Nosocomial pneumonia caused by P. aeruginosa should be treated in combination with an aminoglycoside) [ see Dosage and Administration ( 2 ) ]. To reduce the development of drug-resistant bacteria and maintain the effectiveness of piperacillin and tazobactam for injection and other antibacterial drugs, piperacillin and tazobactam for injection should be used only to treat infections that are proven or strongly suspected to be caused by bacteria.

When culture and susceptibility information are available, they should be considered in selecting or modifying antibacterial therapy. In the absence of such data, local epidemiology and susceptibility patterns may contribute to the empiric selection of therapy.

⏱️ Dosage and Administration ~3 min read ▾

2 DOSAGE AND ADMINISTRATION Piperacillin and tazobactam for injection should be administered by intravenous infusion over 30 minutes. The usual daily dose of Piperacillin and Tazobactam for Injection for adults is 3.375 g every six hours totaling 13.5 g (12.0 g piperacillin/1.5 g tazobactam) ( 2.1 ) Initial presumptive treatment of patients with nosocomial pneumonia should start with Piperacillin and Tazobactam for Injection at a dosage of 4.5 g every six hours plus an aminoglycoside, totaling 18.0 g (16.0 g piperacillin/2.0 g tazobactam).

( 2.2 ) Dosage in patients with renal impairment (≤40 mL/min of CRCL) and dialysis patients should be reduced, based on the degree of actual renal function impairment. ( 2.3 ) For children with appendicitis and/or peritonitis the recommended Piperacillin and Tazobactam for Injection dosage is 100 mg piperacillin/12.5 mg tazobactam per kilogram of body weight, every 8 hours in pediatric patients 9 months of age and older. For pediatric patients 2 to 9 months of age, the recommended dosage is 80 mg piperacillin/10 mg tazobactam per kilogram of body weight, every 8 hours.

( 2.4 ) Piperacillin and Tazobactam for Injection and aminoglycosides should be reconstituted, diluted, and administered separately. Co-administration via Y-site can be done under certain conditions. ( 2.6 )

2.1Adult Patients The usual total daily dose of piperacillin and tazobactam for injection for adults is 3.375 g every six hours totaling 13.5 g (12.0 g piperacillin/1.5 g tazobactam). The usual duration of piperacillin and tazobactam for injection treatment is from 7 to 10 days. Piperacillin and tazobactam for injection should be administered by intravenous infusion over 30 minutes.

2.2Nosocomial Pneumonia Initial presumptive treatment of patients with nosocomial pneumonia should start with piperacillin and tazobactam for injection at a dosage of 4.5 g every six hours plus an aminoglycoside, totaling 18.0 g (16.0 g piperacillin/2.0 g tazobactam). The recommended duration of piperacillin and tazobactam for injection treatment for nosocomial pneumonia is 7 to 14 days. Treatment with the aminoglycoside should be continued in patients from whom P. aeruginosa is isolated.

2.3Renal Impairment In patients with renal impairment (creatinine clearance ≤ 40 mL/min) and dialysis patients (hemodialysis and CAPD), the intravenous dose of piperacillin and tazobactam for injection should be reduced to the degree of actual renal function impairment. The recommended daily doses of piperacillin and tazobactam for injection for patients with renal impairment are as follows: Table 1: Recommended Dosing of Piperacillin and Tazobactam for Injection in Patients with Normal Renal Function and Renal Impairment (As total grams piperacillin/tazobactam) Renal Function (creatinine clearance, All Indications Nosocomial mL/min) (except nosocomial pneumonia) Pneumonia >40 mL/min 3.375 q6h 4.5 q6h 20-40 mL/min* 2.25 q6h 3.375 q6h <20 mL/min* 2.25 q8h 2.25 q6h Hemodialysis** 2.25 q12h 2.25 q8h CAPD 2.25 q12h 2.25 q8h *Creatinine clearance for patients not receiving hemodialysis **0.75 g (0.67 g piperacillin/0.08 g tazobactam) should be administered following each hemodialysis session on hemodialysis days For patients on hemodialysis, the maximum dose is 2.25 g every twelve hours for all indications other than nosocomial pneumonia and 2.25 g every eight hours for nosocomial pneumonia.

Since hemodialysis removes 30% to 40% of the administered dose, an additional dose of 0.75 g piperacillin and tazobactam for injection (0.67 g piperacillin/0.08 g tazobactam) should be administered following each dialysis period on hemodialysis days. No additional dosage of piperacillin and tazobactam for injection is necessary for CAPD patients.

2.4Pediatric Patients For children with appendicitis and/or peritonitis 9 months of age or older, weighing up to 40 kg, and with normal renal function, the recommended piperacillin and tazobactam for injection dosage is 100 mg pipe… [Excerpted — this section continues on DailyMed.]

💊 Dosage Forms and Strengths 127 words ▾

3 DOSAGE FORMS AND STRENGTHS Piperacillin and Tazobactam for Injection is supplied as a white to off-white powder in vials of the following sizes: Each Piperacillin and Tazobactam for Injection 2.25 g vial provides piperacillin sodium equivalent to 2 grams of piperacillin and tazobactam sodium equivalent to 0.25 g of tazobactam. Each Piperacillin and Tazobactam for Injection 3.375 g vial provides piperacillin sodium equivalent to 3 grams of piperacillin and tazobactam sodium equivalent to 0.375 g of tazobactam. Each Piperacillin and Tazobactam for Injection 4.5 g vial provides piperacillin sodium equivalent to 4 grams of piperacillin and tazobactam sodium equivalent to 0.5 g of tazobactam.

Piperacillin and Tazobactam for Injection: 2.25 g, 3.375 g, and 4.5 g lyophilized powder for reconstitution in single-dose vials ( 3 )

⛔ Contraindications 45 words ▾

4 CONTRAINDICATIONS Piperacillin and tazobactam for injection is contraindicated in patients with a history of allergic reactions to any of the penicillins, cephalosporins, or β-lactamase inhibitors. Patients with a history of allergic reactions to any of the penicillins, cephalosporins, or β-lactamase inhibitors. ( 4 )

⚠️ Warnings and Cautions ~2 min read ▾

5 WARNINGS AND PRECAUTIONS Serious hypersensitivity reactions (anaphylactic/anaphylactoid) reactions have been reported in patients receiving Piperacillin and Tazobactam for Injection. Discontinue Piperacillin and Tazobactam for Injection if a reaction occurs. ( 5.1 ) Serious skin reactions, such as Stevens-Johnson syndrome and toxic epidermal necrolysis, have been reported ( 5.2 ).

Discontinue Piperacillin and Tazobactam for Injection for progressive rashes. Clostridium difficile associated diarrhea: evaluate patients if diarrhea occurs. ( 5.3 ) Hematological effects (including bleeding, leukopenia and neutropenia) have occurred.

Monitor hematologic tests during prolonged therapy. ( 5.4 )

5.1Hypersensitivity Reactions Serious and occasionally fatal hypersensitivity (anaphylactic/anaphylactoid) reactions (including shock) have been reported in patients receiving therapy with piperacillin and tazobactam for injection. These reactions are more likely to occur in individuals with a history of penicillin, cephalosporin, or carbapenem hypersensitivity or a history of sensitivity to multiple allergens. Before initiating therapy with piperacillin and tazobactam for injection, careful inquiry should be made concerning previous hypersensitivity reactions.

If an allergic reaction occurs, piperacillin and tazobactam for injection should be discontinued and appropriate therapy instituted.

5.2Serious Skin Reactions Serious skin reactions, such as Stevens-Johnson syndrome and toxic epidermal necrolysis, have been reported in patients receiving piperacillin and tazobactam for injection. If patients develop a skin rash they should be monitored closely and piperacillin and tazobactam for injection discontinued if lesions progress.

5.3Clostridium difficile Associated Diarrhea Clostridium difficile associated diarrhea (CDAD) has been reported with use of nearly all antibacterial agents, including piperacillin and tazobactam for injection, and may range in severity from mild diarrhea to fatal colitis. Treatment with antibacterial agents alters the normal flora of the colon leading to overgrowth of C. difficile . C. difficile produces toxins A and B which contribute to the development of CDAD.

Hypertoxin producing strains of C. difficile cause increased morbidity and mortality, as these infections can be refractory to antimicrobial therapy and may require colectomy. CDAD must be considered in all patients who present with diarrhea following antibacterial drug use. Careful medical history is necessary since CDAD has been reported to occur over two months after the administration of antibacterial agents.

If CDAD is suspected or confirmed, ongoing antibacterial drug use not directed against C. difficile may need to be discontinued. Appropriate fluid and electrolyte management, protein supplementation, antibacterial treatment of C. difficile , and surgical evaluation should be instituted as clinically indicated.

5.4Hematologic Effects Bleeding manifestations have occurred in some patients receiving β-lactam drugs, including piperacillin. These reactions have sometimes been associated with abnormalities of coagulation tests such as clotting time, platelet aggregation and prothrombin time, and are more likely to occur in patients with renal failure. If bleeding manifestations occur, piperacillin and tazobactam for injection should be discontinued and appropriate therapy instituted.

The leukopenia/neutropenia associated with piperacillin and tazobactam for injection administration appears to be reversible and most frequently associated with prolonged administration. Periodic assessment of hematopoietic function should be performed, especially with prolonged therapy, ie, ≥ 21 days [ see Adverse Reactions ( 6.1 ) ].

5.5Central Nervous System Effects As with other penicillins, patients may experience neuromuscular excitability or convulsions if higher than recommended doses are given intravenously (particularly in the presence of renal failure).

5.6El… [Excerpted — this section continues on DailyMed.]

🤒 Adverse Reactions ~2 min read ▾

6 ADVERSE REACTIONS The most common adverse reactions (incidence >5%) are diarrhea, constipation, nausea, headache and insomnia. ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact Fresenius Kabi USA, LLC Vigilance and Medical Affairs at 1-800-551-7176 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch.

6.1Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. During the initial clinical investigations, 2621 patients worldwide were treated with piperacillin and tazobactam for injection in phase 3 trials. In the key North American monotherapy clinical trials (n=830 patients), 90% of the adverse events reported were mild to moderate in severity and transient in nature.

However, in 3.2% of the patients treated worldwide, piperacillin and tazobactam for injection was discontinued because of adverse events primarily involving the skin (1.3%), including rash and pruritus; the gastrointestinal system (0.9%), including diarrhea, nausea, and vomiting; and allergic reactions (0.5%). Table 3: Adverse Reactions from Piperacillin and Tazobactam for Injection Monotherapy Clinical Trials System Organ Class Adverse Reaction Gastrointestinal disorders Diarrhea (11.3%) Constipation (7.7%) Nausea (6.9%) Vomiting (3.3%) Dyspepsia (3.3%) Abdominal pain (1.3%) Pseudomembranous colitis (≤1%) General disorders and administration site conditions Fever (2.4%) Injection site reaction (≤1%) Rigors (≤1%) Immune system disorders Anaphylaxis (≤1%) Infections and infestations Candidiasis (1.6%) Metabolism and nutrition disorders Hypoglycemia (≤1%) Musculoskeletal and connective tissue disorders Myalgia(≤1%) Arthralgia (≤1%) Nervous system disorders Headache (7.7%) Insomnia (6.6%) Skin and subcutaneous tissue disorders Rash (4.2%, including maculopapular, bullous, and urticarial) Pruritus (3.1%) Vascular disorders Phlebitis (1.3%) Thrombophlebitis (≤1%) Hypotension (≤1%) Purpura (≤1%) Epistaxis (≤1%) Flushing (≤1%) Nosocomial Pneumonia Trials Two trials of nosocomial lower respiratory tract infections were conducted.

In one study, 222 patients were treated with piperacillin and tazobactam for injection in a dosing regimen of 4.5 g every 6 hours in combination with an aminoglycoside and 215 patients were treated with imipenem/cilastatin (500 mg/500 mg q6h) in combination with an aminoglycoside. In this trial, treatment-emergent adverse events were reported by 402 patients, 204 (91.9%) in the piperacillin/tazobactam group and 198 (92.1%) in the imipenem/cilastatin group. Twenty-five (11.0%) patients in the piperacillin/tazobactam group and 14 (6.5%) in the imipenem/cilastatin group (p > 0.05) discontinued treatment due to an adverse event.

The second trial used a dosing regimen of 3.375 g given every 4 hours with an aminoglycoside. Table 4: Adverse Reactions from Piperacillin and Tazobactam for Injection Plus Aminoglycoside Clinical Trials a System Organ Class Adverse Reaction Blood and lymphatic system disorders Thrombocythemia (1.4%) Anemia (≤1%) Thrombocytopenia (≤1%) Eosinophilia (≤1%) Gastrointestinal disorders Diarrhea (20%) Constipation (8.4%) Nausea (5.8%) Vomiting (2.7%) Dyspepsia (1.9%) Abdominal pain (1.8%) Stomatitis (≤1%) General disorders and administration site conditions Fever (3.2%) Injection site reaction (≤1%) Infections and infestations Oral candidiasis (3.9%) Candidiasis (1.8%) Investigations BUN increased (1.8%) Blood creatinine increased (1.8%) Liver function test abnormal (1.4%) Alkaline phosphatase increased (≤1%) Aspartate aminotransferase increased (≤1%) Alanine aminotransferase increased (≤1%) Metabolism and nutrition disorders Hypoglycemia (≤1%) Hypokalemia (≤1%) Nervous system disorders Headache (4.5%) Insomnia (4.5%) Renal and urinary disorders Renal failure (≤1%) Skin and subcutaneous tissue diso… [Excerpted — this section continues on DailyMed.]

🔄 Drug Interactions ~2 min read ▾

7 DRUG INTERACTIONS Piperacillin and Tazobactam for Injection administration can significantly reduce tobramycin concentrations in hemodialysis patients. Monitor tobramycin concentrations in these patients. ( 7.1 ) Probenecid prolongs the half-lives of piperacillin and tazobactam and should not be co-administered with Piperacillin and Tazobactam for Injection unless the benefit outweighs the risk.

( 7.2 ) Monitor coagulation parameters in patients receiving Piperacillin and Tazobactam for Injection and heparin or oral anticoagulants. ( 7.3 ) Piperacillin and Tazobactam for Injection may prolong the neuromuscular blockade of vecuronium and other non-depolarizing muscle relaxants. Monitor for adverse reactions related to neuromuscular blockade ( 7.4 )

7.1Aminoglycosides Piperacillin may inactivate aminoglycosides by converting them to microbiologically inert amides. In vivo inactivation : When aminoglycosides are administered in conjunction with piperacillin to patients with end-stage renal disease requiring hemodialysis, the concentrations of the aminoglycosides (especially tobramycin) may be significantly reduced and should be monitored. Sequential administration of piperacillin and tazobactam for injection and tobramycin to patients with either normal renal function or mild to moderate renal impairment has been shown to modestly decrease serum concentrations of tobramycin but no dosage adjustment is considered necessary.

In vitro inactivation: Due to the in vitro inactivation of aminoglycosides by piperacillin, piperacillin and tazobactam for injection and aminoglycosides are recommended for separate administration. Piperacillin and tazobactam for injection and aminoglycosides should be reconstituted, diluted, and administered separately when concomitant therapy with aminoglycosides is indicated. Piperacillin and tazobactam for injection is compatible with amikacin and gentamicin for simultaneous Y-site infusion in certain diluents and at specific concentrations.

Piperacillin and tazobactam for injection is not compatible with tobramycin for simultaneous Y-site infusion [ see Dosage and Administration ( 2.6 ) ].

7.2Probenecid Probenecid administered concomitantly with piperacillin and tazobactam prolongs the half-life of piperacillin by 21% and that of tazobactam by 71% because probenecid inhibits tubular renal secretion of both piperacillin and tazobactam. Probenecid should not be co-administered with piperacillin and tazobactam for injection unless the benefit outweighs the risk.

7.3Anticoagulants Coagulation parameters should be tested more frequently and monitored regularly during simultaneous administration of high doses of heparin, oral anticoagulants, or other drugs that may affect the blood coagulation system or the thrombocyte function [ see Warnings and Precautions ( 5.4 ) ].

7.4Vecuronium Piperacillin when used concomitantly with vecuronium has been implicated in the prolongation of the neuromuscular blockade of vecuronium. Piperacillin and tazobactam for injection could produce the same phenomenon if given along with vecuronium. Due to their similar mechanism of action, it is expected that the neuromuscular blockade produced by any of the non-depolarizing muscle relaxants could be prolonged in the presence of piperacillin.

Monitor for adverse reactions related to neuromuscular blockade (See package insert for vecuronium bromide).

7.5Methotrexate Limited data suggests that co-administration of methotrexate and piperacillin may reduce the clearance of methotrexate due to competition for renal secretion. The impact of tazobactam on the elimination of methotrexate has not been evaluated. If concurrent therapy is necessary, serum concentrations of methotrexate as well as the signs and symptoms of methotrexate toxicity should be frequently monitored.

7.6Effects on Laboratory Tests There have been reports of positive test results using the Bio-Rad Laboratories Platelia Aspergillus EIA test in patients receiving pip… [Excerpted — this section continues on DailyMed.]

👥 Use in Specific Populations ~3 min read ▾

8 USE IN SPECIFIC POPULATIONS Dosage in patients with renal impairment (≤40 mL/min of CRCL) should be reduced to the degree of actual renal function impairment. ( 2.3 , 8.6 )

8.1Pregnancy Teratogenic effects—Pregnancy Category B Piperacillin/tazobactam Teratology studies have been performed in mice and rats and have revealed no evidence of harm to the fetus when piperacillin/tazobactam is administered intravenously up to a dose of 3000/750 mg/kg piperacillin/tazobactam which is 1 to 2 times and 2 to 3 times the human dose of piperacillin and tazobactam, respectively, based on body-surface area (mg/m 2 ). Piperacillin and tazobactam cross the placenta in humans. There are, however, no adequate and well-controlled studies with the piperacillin/tazobactam combination or with piperacillin or tazobactam alone in pregnant women.

Because animal reproduction studies are not always predictive of the human response, this drug should be used during pregnancy only if clearly needed.

8.3Nursing Mothers Piperacillin is excreted in low concentrations in human milk; tazobactam concentrations in human milk have not been studied. Caution should be exercised when piperacillin and tazobactam for injection is administered to a nursing woman.

8.4Pediatric Use Use of piperacillin and tazobactam for injection in pediatric patients 2 months of age or older with appendicitis and/or peritonitis is supported by evidence from well-controlled studies and pharmacokinetic studies in adults and in pediatric patients. This includes a prospective, randomized, comparative, open-label clinical trial with 542 pediatric patients 2-12 years of age with complicated intra-abdominal infections, in which 273 pediatric patients received piperacillin/tazobactam. Safety and efficacy in pediatric patients less than 2 months of age have not been established [ see Clinical Pharmacology ( 12 ) and Dosage and Administration ( 2 ) ].

It has not been determined how to adjust piperacillin and tazobactam for injection dosage in pediatric patients with renal impairment.

8.5Geriatric Use Patients over 65 years are not at an increased risk of developing adverse effects solely because of age. However, dosage should be adjusted in the presence of renal impairment [ see Dosage and Administration ( 2 ) ]. In general, dose selection for an elderly patient should be cautious, usually starting at the low end of the dosing range, reflecting the greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy.

Piperacillin and tazobactam for injection contains 54 mg (2.35 mEq) of sodium per gram of piperacillin in the combination product. At the usual recommended doses, patients would receive between 648 and 864 mg/day (28.2 and 37.6 mEq) of sodium. The geriatric population may respond with a blunted natriuresis to salt loading.

This may be clinically important with regard to such diseases as congestive heart failure. This drug is known to be substantially excreted by the kidney, and the risk of toxic reactions to this drug may be greater in patients with impaired renal function. Because elderly patients are more likely to have decreased renal function, care should be taken in dose selection, and it may be useful to monitor renal function.

8.6Renal Impairment In patients with creatinine clearance ≤ 40 mL/min and dialysis patients (hemodialysis and CAPD), the intravenous dose of piperacillin and tazobactam for injection should be reduced to the degree of renal function impairment [ see Dosage and Administration ( 2 ) ].

8.7Hepatic Impairment Dosage adjustment of piperacillin and tazobactam for injection is not warranted in patients with hepatic cirrhosis [See Clinical Pharmacology ( 12.3 )].

8.8Patients with Cystic Fibrosis As with other semisynthetic penicillins, piperacillin therapy has been associated with an increased incidence of fever and rash in cystic fibrosis patients.

🤰 Pregnancy 117 words ▾

8.1Pregnancy Teratogenic effects—Pregnancy Category B Piperacillin/tazobactam Teratology studies have been performed in mice and rats and have revealed no evidence of harm to the fetus when piperacillin/tazobactam is administered intravenously up to a dose of 3000/750 mg/kg piperacillin/tazobactam which is 1 to 2 times and 2 to 3 times the human dose of piperacillin and tazobactam, respectively, based on body-surface area (mg/m 2 ). Piperacillin and tazobactam cross the placenta in humans. There are, however, no adequate and well-controlled studies with the piperacillin/tazobactam combination or with piperacillin or tazobactam alone in pregnant women.

Because animal reproduction studies are not always predictive of the human response, this drug should be used during pregnancy only if clearly needed.

🧒 Pediatric Use 118 words ▾

8.4Pediatric Use Use of piperacillin and tazobactam for injection in pediatric patients 2 months of age or older with appendicitis and/or peritonitis is supported by evidence from well-controlled studies and pharmacokinetic studies in adults and in pediatric patients. This includes a prospective, randomized, comparative, open-label clinical trial with 542 pediatric patients 2-12 years of age with complicated intra-abdominal infections, in which 273 pediatric patients received piperacillin/tazobactam. Safety and efficacy in pediatric patients less than 2 months of age have not been established [ see Clinical Pharmacology ( 12 ) and Dosage and Administration ( 2 ) ].

It has not been determined how to adjust piperacillin and tazobactam for injection dosage in pediatric patients with renal impairment.

🧓 Geriatric Use 202 words ▾

8.5Geriatric Use Patients over 65 years are not at an increased risk of developing adverse effects solely because of age. However, dosage should be adjusted in the presence of renal impairment [ see Dosage and Administration ( 2 ) ]. In general, dose selection for an elderly patient should be cautious, usually starting at the low end of the dosing range, reflecting the greater frequency of decreased hepatic, renal, or cardiac function, and of concomitant disease or other drug therapy.

Piperacillin and tazobactam for injection contains 54 mg (2.35 mEq) of sodium per gram of piperacillin in the combination product. At the usual recommended doses, patients would receive between 648 and 864 mg/day (28.2 and 37.6 mEq) of sodium. The geriatric population may respond with a blunted natriuresis to salt loading.

This may be clinically important with regard to such diseases as congestive heart failure. This drug is known to be substantially excreted by the kidney, and the risk of toxic reactions to this drug may be greater in patients with impaired renal function. Because elderly patients are more likely to have decreased renal function, care should be taken in dose selection, and it may be useful to monitor renal function.

🆘 Overdosage 119 words ▾

10 OVERDOSAGE There have been postmarketing reports of overdose with piperacillin/tazobactam. The majority of those events experienced, including nausea, vomiting, and diarrhea, have also been reported with the usual recommended dosages. Patients may experience neuromuscular excitability or convulsions if higher than recommended doses are given intravenously (particularly in the presence of renal failure) [ see Warnings and Precautions ( 5.5 ) ].

Treatment should be supportive and symptomatic according the patient's clinical presentation. Excessive serum concentrations of either piperacillin or tazobactam may be reduced by hemodialysis. Following a single 3.375 g dose of piperacillin/tazobactam, the percentage of the piperacillin and tazobactam dose removed by hemodialysis was approximately 31% and 39%, respectively [ see Clinical Pharmacology ( 12 ) ].

🧬 Clinical Pharmacology ~3 min read ▾

12 CLINICAL PHARMACOLOGY

12.1Mechanism of Action Piperacillin and tazobactam for injection is an antibacterial drug [ see Microbiology ( 12.4 ) ].

12.2Pharmacodynamics The pharmacodynamic parameter for piperacillin/tazobactam that is most predictive of clinical and microbiological efficacy is time above MIC.

12.3Pharmacokinetics The mean and coefficients of variation (CV%) for the pharmacokinetic parameters of piperacillin and tazobactam after multiple intravenous doses are summarized in Table 5. Table 5: Mean (CV%) Piperacillin and Tazobactam PK Parameters Piperacillin Piperacillin Piperacillin/Tazobactam C max AUC b CL V T 1/2 CL R Dose a mcg/mL mcg•h/mL mL/min L h mL/min 2.25 g 134 131 (14) 257 17.4 0.79 - 3.375 g 242 242 (10) 207 15.1 0.84 140 4.5 g 298 322 (16) 210 15.4 0.84 - Tazobactam Piperacillin/Tazobactam C max AUC b CL V T 1/2 CL R Dose a mcg/mL mcg•h/mL mL/min L h mL/min 2.25 g 15 16.0 (21) 258 17.0 0.77 - 3.375 g 24 25.0 (8) 251 14.8 0.68 166 4.5 g 34 39.8 (15) 206 14.7 0.82 - a Piperacillin and tazobactam were given in combination, infused over 30 minutes. b Numbers in parentheses are coefficients of variation (CV%).

Peak plasma concentrations of piperacillin and tazobactam are attained immediately after completion of an intravenous infusion of piperacillin and tazobactam for injection. Piperacillin plasma concentrations, following a 30-minute infusion of piperacillin and tazobactam for injection, were similar to those attained when equivalent doses of piperacillin were administered alone. Steady-state plasma concentrations of piperacillin and tazobactam were similar to those attained after the first dose due to the short half-lives of piperacillin and tazobactam.

Distribution Both piperacillin and tazobactam are approximately 30% bound to plasma proteins. The protein binding of either piperacillin or tazobactam is unaffected by the presence of the other compound. Protein binding of the tazobactam metabolite is negligible.

Piperacillin and tazobactam are widely distributed into tissues and body fluids including intestinal mucosa, gallbladder, lung, female reproductive tissues (uterus, ovary, and fallopian tube), interstitial fluid, and bile. Mean tissue concentrations are generally 50% to 100% of those in plasma. Distribution of piperacillin and tazobactam into cerebrospinal fluid is low in subjects with non-inflamed meninges, as with other penicillins (see Table 6).

Table 6: Piperacillin/Tazobactam Concentrations in Selected Tissues and Fluids after Single 4 g/0.5 g 30-min IV Infusion of Piperacillin and Tazobactam for Injection Tissue or Fluid N a Sampling period b (h) Mean PIP Concentration Range (mg/L) Tissue:Plasma Range Tazo Concentration Range (mg/L) Tazo Tissue:Plasma Range Skin 35 0.5 – 4.5 34.8 – 94.2 0.60 – 1.1 4.0 – 7.7 0.49 –

0.93Fatty Tissue 37 0.5 – 4.5 4.0 – 10.1 0.097 – 0.115 0.7 – 1.5 0.10 –

0.13Muscle 36 0.5 – 4.5 9.4 – 23.3 0.29 – 0.18 1.4 – 2.7 0.18 –

0.30Proximal Intestinal Mucosa 7 1.5 – 2.5 31.4 0.55 10.3

1.15Distal Intestinal Mucosa 7 1.5 – 2.5 31.2 0.59 14.5

2.1Appendix 22 0.5 – 2.5 26.5 – 64.1 0.43 – 0.53 9.1 – 18.6 0.80 – 1.35 a Each subject provided a single sample. b Time from the start of the infusion Metabolism Piperacillin is metabolized to a minor microbiologically active desethyl metabolite. Tazobactam is metabolized to a single metabolite that lacks pharmacological and antibacterial activities. Excretion Following single or multiple piperacillin and tazobactam for injection doses to healthy subjects, the plasma half-life of piperacillin and of tazobactam ranged from 0.7 to 1.2 hours and was unaffected by dose or duration of infusion.

Both piperacillin and tazobactam are eliminated via the kidney by glomerular filtration and tubular secretion. Piperacillin is excreted rapidly as unchanged drug with 68% of the administered dose excreted in the urine. Tazobactam and its metabolite are eliminated primarily by renal excretion with 80% of the administered dose excreted as un… [Excerpted — this section continues on DailyMed.]

🧬 Mechanism of Action 20 words ▾

12.1Mechanism of Action Piperacillin and tazobactam for injection is an antibacterial drug [ see Microbiology ( 12.4 ) ].

📦 How Supplied / Storage and Handling 191 words ▾

16 HOW SUPPLIED/ STORAGE AND HANDLING Piperacillin and Tazobactam for Injection is supplied in the following sizes: Each Piperacillin and Tazobactam for Injection 2.25 g single-dose vial provides piperacillin sodium equivalent to 2 grams of piperacillin and tazobactam sodium equivalent to 0.25 g of tazobactam. Each vial contains 4.7 mEq (108 mg) of sodium. Supplied 10 per box – Product Code PRX300920, NDC 63323-309-26 Each Piperacillin and Tazobactam for Injection 3.375 g single-dose vial provides piperacillin sodium equivalent to 3 grams of piperacillin and tazobactam sodium equivalent to 0.375 g of tazobactam.

Each vial contains 7.0 mEq (162 mg) of sodium. Supplied 10 per box – Product Code PRX301030, NDC 63323-300-36 Each Piperacillin and Tazobactam for Injection 4.5 g single-dose vial provides piperacillin sodium equivalent to 4 grams of piperacillin and tazobactam sodium equivalent to 0.5 g of tazobactam. Each vial contains 9.4 mEq (216 mg) of sodium.

Supplied 10 per box – Product Code PRX302050, NDC 63323-320-56 Store Piperacillin and Tazobactam for Injection dry powder at 20°C to 25°C (68°F to 77°F) [see USP Controlled Room Temperature] prior to reconstitution. This container closure is not made with natural rubber latex.

📋 Description ~2 min read ▾

11 DESCRIPTION Piperacillin and tazobactam for injection is an injectable antibacterial combination product consisting of the semisynthetic antibacterial piperacillin sodium and the β-lactamase inhibitor tazobactam sodium for intravenous administration. Piperacillin sodium is derived from D(-)-α-aminobenzyl-penicillin. The chemical name of piperacillin sodium is sodium (2 S ,5 R ,6 R )-6-[( R )-2-(4-ethyl-2,3-dioxo-1-piperazinecarboxamido)-2-phenylacetamido]-3,3-dimethyl-7-oxo-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate.

The chemical formula is C 23 H 26 N 5 NaO 7 S and the molecular weight is 539.5. The chemical structure of piperacillin sodium is: Tazobactam sodium, a derivative of the penicillin nucleus, is a penicillanic acid sulfone. Its chemical name is sodium (2 S, 3 S, 5 R )-3-methyl-7-oxo-3-(1 H -1,2,3-triazol-1-ylmethyl)-4-thia-1-azabicyclo[3.2.0]heptane-2-carboxylate-4,4-dioxide.

The chemical formula is C 10 H 11 N 4 NaO 5 S and the molecular weight is 322.3. The chemical structure of tazobactam sodium is: Piperacillin and tazobactam for injection, piperacillin/tazobactam parenteral combination, is a white to off-white sterile, cryodesiccated powder consisting of piperacillin and tazobactam as their sodium salts packaged in glass vials. The product does not contain excipients or preservatives.

Each piperacillin and tazobactam for injection 2.25 g single dose vial contains an amount of drug sufficient for withdrawal of piperacillin sodium equivalent to 2 grams of piperacillin and tazobactam sodium equivalent to 0.25 g of tazobactam. Each vial contains 4.7 mEq (108 mg) of sodium. Each piperacillin and tazobactam for injection 3.375 g single dose vial contains an amount of drug sufficient for withdrawal of piperacillin sodium equivalent to 3 grams of piperacillin and tazobactam sodium equivalent to 0.375 g of tazobactam.

Each vial contains 7.0 mEq (162 mg) of sodium. Each piperacillin and tazobactam for injection 4.5 g single dose vial contains an amount of drug sufficient for withdrawal of piperacillin sodium equivalent to 4 grams of piperacillin and tazobactam sodium equivalent to 0.5 g of tazobactam. Each vial contains 9.4 mEq (216 mg) of sodium.

Piperacillin and tazobactam for injection is a monosodium salt of piperacillin and a monosodium salt of tazobactam containing a total of 2.35 mEq (54 mg) of sodium (Na + ) per gram of piperacillin in the combination product. Chemical Structure Chemical Structure

💬 Information for Patients ~1 min read ▾

17 PATIENT COUNSELING INFORMATION Patients should be counseled that antibacterial drugs including piperacillin and tazobactam for injection should only be used to treat bacterial infections. They do not treat viral infections (e.g., the common cold). When piperacillin and tazobactam for injection is prescribed to treat a bacterial infection, patients should be told that although it is common to feel better early in the course of therapy, the medication should be taken exactly as directed.

Skipping doses or not completing the full course of therapy may (1) decrease the effectiveness of the immediate treatment and (2) increase the likelihood that bacteria will develop resistance and will not be treatable by piperacillin and tazobactam for injection or other antibacterial drugs in the future. Diarrhea is a common problem caused by antibacterial drugs which usually ends when the drug is discontinued. Sometimes after starting treatment with antibacterial drugs, patients can develop watery and bloody stools (with or without stomach cramps and fever) even as late as two or more months after having taken the last dose of the drug.

If this occurs, patients should contact their physician as soon as possible. For all questions concerning adverse reactions associated with the use of this product or for inquiries concerning our products, please contact us at 1-800-551-7176 or www.fresenius-kabi.us . PREMIERProRx is a trademark of Premier, Inc., used under license.

Manufactured for: Fresenius Kabi USA, LLC Lake Zurich, IL 60047 Made in Italy 451445 855213/00 Revised: April 2015

🍼 Nursing Mothers 37 words ▾

8.3Nursing Mothers Piperacillin is excreted in low concentrations in human milk; tazobactam concentrations in human milk have not been studied. Caution should be exercised when piperacillin and tazobactam for injection is administered to a nursing woman.

🧬 Pharmacokinetics ~3 min read ▾

12.3Pharmacokinetics The mean and coefficients of variation (CV%) for the pharmacokinetic parameters of piperacillin and tazobactam after multiple intravenous doses are summarized in Table 5. Table 5: Mean (CV%) Piperacillin and Tazobactam PK Parameters Piperacillin Piperacillin Piperacillin/Tazobactam C max AUC b CL V T 1/2 CL R Dose a mcg/mL mcg•h/mL mL/min L h mL/min 2.25 g 134 131 (14) 257 17.4 0.79 - 3.375 g 242 242 (10) 207 15.1 0.84 140 4.5 g 298 322 (16) 210 15.4 0.84 - Tazobactam Piperacillin/Tazobactam C max AUC b CL V T 1/2 CL R Dose a mcg/mL mcg•h/mL mL/min L h mL/min 2.25 g 15 16.0 (21) 258 17.0 0.77 - 3.375 g 24 25.0 (8) 251 14.8 0.68 166 4.5 g 34 39.8 (15) 206 14.7 0.82 - a Piperacillin and tazobactam were given in combination, infused over 30 minutes. b Numbers in parentheses are coefficients of variation (CV%).

Peak plasma concentrations of piperacillin and tazobactam are attained immediately after completion of an intravenous infusion of piperacillin and tazobactam for injection. Piperacillin plasma concentrations, following a 30-minute infusion of piperacillin and tazobactam for injection, were similar to those attained when equivalent doses of piperacillin were administered alone. Steady-state plasma concentrations of piperacillin and tazobactam were similar to those attained after the first dose due to the short half-lives of piperacillin and tazobactam.

Distribution Both piperacillin and tazobactam are approximately 30% bound to plasma proteins. The protein binding of either piperacillin or tazobactam is unaffected by the presence of the other compound. Protein binding of the tazobactam metabolite is negligible.

Piperacillin and tazobactam are widely distributed into tissues and body fluids including intestinal mucosa, gallbladder, lung, female reproductive tissues (uterus, ovary, and fallopian tube), interstitial fluid, and bile. Mean tissue concentrations are generally 50% to 100% of those in plasma. Distribution of piperacillin and tazobactam into cerebrospinal fluid is low in subjects with non-inflamed meninges, as with other penicillins (see Table 6).

Table 6: Piperacillin/Tazobactam Concentrations in Selected Tissues and Fluids after Single 4 g/0.5 g 30-min IV Infusion of Piperacillin and Tazobactam for Injection Tissue or Fluid N a Sampling period b (h) Mean PIP Concentration Range (mg/L) Tissue:Plasma Range Tazo Concentration Range (mg/L) Tazo Tissue:Plasma Range Skin 35 0.5 – 4.5 34.8 – 94.2 0.60 – 1.1 4.0 – 7.7 0.49 –

0.93Fatty Tissue 37 0.5 – 4.5 4.0 – 10.1 0.097 – 0.115 0.7 – 1.5 0.10 –

0.13Muscle 36 0.5 – 4.5 9.4 – 23.3 0.29 – 0.18 1.4 – 2.7 0.18 –

0.30Proximal Intestinal Mucosa 7 1.5 – 2.5 31.4 0.55 10.3

1.15Distal Intestinal Mucosa 7 1.5 – 2.5 31.2 0.59 14.5

2.1Appendix 22 0.5 – 2.5 26.5 – 64.1 0.43 – 0.53 9.1 – 18.6 0.80 – 1.35 a Each subject provided a single sample. b Time from the start of the infusion Metabolism Piperacillin is metabolized to a minor microbiologically active desethyl metabolite. Tazobactam is metabolized to a single metabolite that lacks pharmacological and antibacterial activities. Excretion Following single or multiple piperacillin and tazobactam for injection doses to healthy subjects, the plasma half-life of piperacillin and of tazobactam ranged from 0.7 to 1.2 hours and was unaffected by dose or duration of infusion.

Both piperacillin and tazobactam are eliminated via the kidney by glomerular filtration and tubular secretion. Piperacillin is excreted rapidly as unchanged drug with 68% of the administered dose excreted in the urine. Tazobactam and its metabolite are eliminated primarily by renal excretion with 80% of the administered dose excreted as unchanged drug and the remainder as the single metabolite.

Piperacillin, tazobactam and desethyl piperacillin are also secreted into the bile. Specific Populations Renal impairment After the administration of single doses of piperacillin/tazobactam to subjects with renal impairment, the half-life of piperacillin… [Excerpted — this section continues on DailyMed.]

🧬 Pharmacodynamics 20 words ▾

12.2Pharmacodynamics The pharmacodynamic parameter for piperacillin/tazobactam that is most predictive of clinical and microbiological efficacy is time above MIC.

🧪 Nonclinical Toxicology 111 words ▾

13 NONCLINICAL TOXICOLOGY

13.1Carcinogenesis, Mutagenesis, Impairment of Fertility Long-term carcinogenicity studies in animals have not been conducted with piperacillin/tazobactam, piperacillin, or tazobactam. Piperacillin/Tazobactam Piperacillin/tazobactam was negative in microbial mutagenicity assays, the unscheduled DNA synthesis (UDS) test, a mammalian point mutation (Chinese hamster ovary cell HPRT) assay, and a mammalian cell (BALB/c-3T3) transformation assay. In vivo , piperacillin/tazobactam did not induce chromosomal aberrations in rats.

Piperacillin/tazobactam Reproduction studies have been performed in rats and have revealed no evidence of impaired fertility when piperacillin/tazobactam is administered intravenously up to a dose of 1280/320 mg/kg piperacillin/tazobactam, which is similar to the maximum recommended human daily dose based on body-surface area (mg/m 2 ).

📄 Carcinogenesis, Mutagenesis, Impairment of Fertility 108 words ▾

13.1Carcinogenesis, Mutagenesis, Impairment of Fertility Long-term carcinogenicity studies in animals have not been conducted with piperacillin/tazobactam, piperacillin, or tazobactam. Piperacillin/Tazobactam Piperacillin/tazobactam was negative in microbial mutagenicity assays, the unscheduled DNA synthesis (UDS) test, a mammalian point mutation (Chinese hamster ovary cell HPRT) assay, and a mammalian cell (BALB/c-3T3) transformation assay. In vivo , piperacillin/tazobactam did not induce chromosomal aberrations in rats.

Piperacillin/tazobactam Reproduction studies have been performed in rats and have revealed no evidence of impaired fertility when piperacillin/tazobactam is administered intravenously up to a dose of 1280/320 mg/kg piperacillin/tazobactam, which is similar to the maximum recommended human daily dose based on body-surface area (mg/m 2 ).

📚 References 171 words ▾

15 REFERENCES 1. Clinical and Laboratory Standards Institute (CLSI). Performance Standards for Antimicrobial Susceptibility Testing; Twenty-third Informational Supplement .

CLSI document M100-S23, Clinical and Laboratory Standards Institute, 950 West Valley Road, Suite 2500, Wayne, Pennsylvania 19087, USA, 2013. 2. Clinical and Laboratory Standards Institute (CLSI).

Methods for Dilution Antimicrobial Susceptibility Tests for Bacteria that Grow Aerobically; Approved Standard – Ninth Edition . CLSI document M07-A9, Clinical and Laboratory Standards Institute, 950 West Valley Road, Suite 2500, Wayne, Pennsylvania 19087, USA, 2012. 3.

Clinical and Laboratory Standards Institute (CLSI). Performance Standards for Antimicrobial Disk Diffusion Susceptibility Tests; Approved Standard – Eleventh Edition. CLSI document M02-A11, Clinical and Laboratory Standards Institute, 950 West Valley Road, Suite 2500, Wayne, Pennsylvania 19087, USA, 2012.

4. Clinical and Laboratory Standards Institute (CLSI). Methods for Antimicrobial Susceptibility Testing of Anaerobic Bacteria; Approved Standard – Eight Edition .

CLSI document M11-A8. Clinical and Laboratory Standards Institute, 950 West Valley Road, Suite 2500, Wayne, PA 19087 USA, 2012. CLINITEST ® is a registered trademark of Siemens Healthcare Diagnostics Inc.

📄 Package Label / Principal Display Panel 69 words ▾

Package/Label Display Panel NDC 63323-309-26 PIPERACILLIN AND TAZOBACTAM FOR INJECTION 2.25 grams/vial For IV Use Only PRx Pip Taz 2.25 g vial label

Package/Label Display Panel NDC 63323-300-36 PIPERACILLIN AND TAZOBACTAM FOR INJECTION 3.375 grams/vial For IV Use Only PRx Pip Taz 3.375 g vial label

Package/Label Display Panel NDC 63323-320-56 PIPERACILLIN AND TAZOBACTAM FOR INJECTION 4.5 grams/vial For IV Use Only PRx Pip Taz 4.5 g vial label

Source: FDA Structured Product Labeling, mirrored from DailyMed / openFDA. Prefer the government’s original formatting? View this label on DailyMed ↗

Reported adverse events (FAERS)

Read carefully: FAERS reports are voluntary and unverified. Counts are not incidence, do not establish causation, are subject to reporting bias, and cannot be used to compare one drug to another. Shown for signal context only. Reports for Piperacillin and Tazobactam (this brand).

Top reported reactions

Acute Kidney Injury2,014
Pyrexia1,735
Condition Aggravated1,097
Diarrhoea1,084
Thrombocytopenia1,029
Pneumonia987
Neutropenia951

Age at onset

Neonate141
Infant105
Child260
Adolescent146
Adult2,487
Elderly2,238

Reporter sex

26,599 reports
Male · 58%
Female · 42%
Unknown · 0%

Serious outcomes

Hospitalization16,124
Life-threatening4,617
Disabling492
Reports over time (by year) — tap or hover for the count & year
2021 2022 2024 2026 3,845 0
Most recent year is provisional (FAERS lags ~3 months).
Where does this data come from?
Adverse-event reports from the FDA Adverse Event Reporting System (FAERS) via openFDA. FAERS reports are voluntary and unverified — counts are not incidence and don’t establish causation.

About this NDC listing & data coverage

Finished prescription product
What data is (and isn’t) available for this NDC — tap to expand
NDC identity (package / product / labeler codes) ✓ Available
Labeler ✓ Available
Product & package description ✓ Available
Marketing category & status ✓ Available
Active ingredient / dosage form / route ✓ Available
FDA label (SPL via DailyMed) ✓ Available
Package photos — Not published for this NDC No photo available yet for this listing.
Inactive ingredients (structured) — Not published for this NDC The labeler did not submit a structured excipient list, or no SPL is available.
NADAC pharmacy acquisition price (CMS) — Not published for this NDC CMS publishes NADAC only for NDCs reported in its retail-pharmacy survey.
Orange Book / therapeutic-equivalence data ✓ Available
HCPCS J-code billing crosswalk — Not published for this NDC Most self-administered / retail products have no J-code — that is normal.
Medicaid utilization (CMS SDUD) — Not published for this NDC CMS reports utilization only for NDCs with Medicaid claims above its privacy threshold.
“Not published” reflects what the public FDA / CMS / NLM sources provide for this exact package code — it is a property of the data feeds, not a judgment about the product.

Questions about this listing

Why is there no price listed?
The pricing shown on our NDC pages comes from CMS NADAC, a voluntary survey of retail community pharmacy invoices. CMS does not publish a NADAC for every NDC — packages outside the retail survey (institutional and hospital products, bulk packages, discontinued items, and many OTC items) may never receive one. A missing price reflects the survey's scope, not this product's actual cost, and does not mean the product is free or unavailable.
Is the NDC printed on the package the same as the 11-digit billing NDC?
Yes, they identify this exact package in different formats. The form printed on the packaging and shown on DailyMed is the one the FDA registered. Insurance claims use a fixed 11-digit 5-4-2 format, so the short segment is padded with a leading zero and the dashes are dropped. The Identity section at the top of this page lists each form of this code.
Is this package still being marketed?
Yes, per the latest FDA NDC Directory data on this page: this package is listed as actively marketed, with no marketing end date reported by Fresenius Kabi USA, LLC. Listing status can change — the directory data on this page refreshes weekly.
Does this product come in other package sizes?
Yes — the FDA directory lists 1 other package presentation of this same product, including 10 vials (63323-0309-20). Each has its own NDC and its own page — see the package list near the top of this page.
Who lists this product with the FDA?
Fresenius Kabi USA, LLC is the labeler of record for this NDC — the company under whose FDA-assigned code the package is listed. The labeler may be the manufacturer itself or a distributor marketing the product under its own code.
Do I need a prescription for this product?
This NDC is listed with FDA as a prescription product, so it is dispensed under a prescriber's order. Your pharmacist can tell you whether any over-the-counter forms of the same medication exist.
This page identifies an FDA-listed package (the NDC) and reports public regulatory and pricing data about the listing. It is reference information, not a medical recommendation — talk to your pharmacist or prescriber about your own medication.
Where does this data come from?
Listing facts (marketing category, packager status, marketing dates) from the FDA openFDA NDC Directory; label availability from DailyMed; pricing coverage from CMS NADAC; equivalence scope from the FDA Orange Book.
← 63323-0306-26 · Fresenius 63323-0314-61 · Fresenius →
For educational and professional reference only — not medical advice. Pricing reflects published NADAC and CMS ASP (free public data) and may differ from your acquisition cost; always verify before billing or dispensing.