Dosing & Uses
Dosage Forms & Strengths
ceftolozane/tazobactam
IV injection, powder for reconstitution
- 1.5g/vial (ie, 1.5g = 1g ceftolozane plus 0.5g tazobactam)
- Dose based on sum weight of each ingredient
Complicated Intra-abdominal Infections
Indicated for use in combination with metronidazole for complicated intra-abdominal infections (cIAI) cause by Enterobacter cloacae, Escherichia coli, Klebsiella oxytoca, Klebsiella pneumoniae, Proteus mirabilis, Pseudomonas aeruginosa, Bacteroides fragilis, Streptococcus anginosus, Streptococcus constellatus, and Streptococcus salivarius
1.5 g IV q8hr x4-14 days
Complicated Urinary Tract Infections
Indicated for complicated urinary tract infections (cUTI), including pyelonephritis, caused by Escherichia coli, Klebsiella pneumoniae, Proteus mirabilis, and Pseudomonas aeruginosa
1.5 g IV q8hr x7 days
Bacterial Pneumonia
Indicated for treatment of adults aged ≥18 years with hospital-acquired bacterial pneumonia and ventilator-associated bacterial pneumonia (HABP/VABP) caused by the following susceptible Gram-negative microorganisms: Enterobacter cloacae, Escherichia coli, Haemophilus influenzae, Klebsiella oxytoca, Klebsiella pneumoniae, Proteus mirabilis, Pseudomonas aeruginosa, and Serratia marcescens
3 g IV q8hr x8-14 days
Dosage Modifications
Hepatic impairment: No dosage adjustment required
Renal impairment
-
cIAI or cUTI
- CrCl 30-50 mL/min: 750 mg (500 mg/250 mg) IV q8hr
- CrCl 15-29 mL/min: 375 mg (250 mg/125 mg) IV q8hr
- ESRD on hemodialysis: Administer a single loading dose of 750 mg (500 mg/250 mg) followed by a 150-mg (100 mg/50 mg) maintenance dose administered q8hr for the remainder of the treatment period (on hemodialysis days, administer the dose at the earliest possible time following completion of dialysis)
-
HABP/VABP
- CrCl 30-50 mL/min: 1.5 g (1 g/0.5 g) IV q8hr
- CrCl 15-29 mL/min: 750 mg (500 mg/250 mg) IV q8hr
- ESRD on hemodialysis: Administer a single loading dose of 2.25 g (1.5 g/0.75 g) followed by a 450-mg (300 mg/150 mg) maintenance dose administered q8hr for the remainder of the treatment period (on hemodialysis days, administer the dose at the earliest possible time following dialysis completion)
Dosage Forms & Strengths
ceftolozane/tazobactam
IV injection, powder for reconstitution
- 1.5g/vial (ie, 1.5g = 1g ceftolozane plus 0.5g tazobactam)
- Dose based on sum weight of each ingredient
Complicated Intra-abdominal Infections
Indicated for use in combination with metronidazole for children aged birth to <18 years with complicated intra-abdominal infections (cIAI) cause by Enterobacter cloacae, Escherichia coli, Klebsiella oxytoca, Klebsiella pneumoniae, Proteus mirabilis, Pseudomonas aeruginosa, Bacteroides fragilis, Streptococcus anginosus, Streptococcus constellatus, and Streptococcus salivarius
CrCl >50 mL/min/1.73 m2: 30 mg/kg IV q8hr x5-14 days; not to exceed 1.5 g/dose
Complicated Urinary Tract Infections
Indicated for children aged birth to <18 years with complicated urinary tract infections (cUTI), including pyelonephritis, caused by Escherichia coli, Klebsiella pneumoniae, Proteus mirabilis, and Pseudomonas aeruginosa
CrCl >50 mL/min/1.73 m2: 30 mg/kg IV q8hr x7-14 days; not to exceed 1.5 g/dose
Dosage Modifications
Renal impairment
- ≤50 mL/min/1.73 m2: Not recommended; dosage adjustment not determined in children
Adverse Effects
>10% (HABP/VABP)
Increased hepatic transaminase (11.9%)
1-10% (cIAI or cUTI)
Nausea (2.8-7.9%)
Headache (2.5-5.8%)
Diarrhea (1.9-6.2%)
Pyrexia (1.7-5.6%)
Constipation (1.9-3.9%)
Insomnia (1.3-3.5%)
Vomiting (1.1-3.3%)
Hypokalemia (0.8-3.3%)
ALT increased (1.7-1.5%)
AST increased (1-1.7%)
Anemia (0.4-1.5%)
Thrombocytosis (0.4-1.9%)
Abdominal pain (0.8-1.2%)
Anxiety (0.2-1.9%)
Dizziness (0.8-1.1%)
Hypotension (0.4-1.7%)
Atrial fibrillation (0.2-1.2%)
Rash (0.9-1.7%)
1-10% (HABP/VABP)
Renal impairment/failure (8.9%)
Diarrhea (6.4%)
Intracranial hemorrhage (4.4%)
Vomiting (3.3%)
Clostridioides difficile-associated diarrhea (2.8%)
<1%
Cardiac disorders: Tachycardia, angina pectoris
Gastrointestinal disorders: Ileus, gastritis, abdominal distension, dyspepsia, flatulence, paralytic ileus
General disorders and administration site conditions: Infusion site reactions
Infections and infestations: Candidiasis candidiasis (including oropharyngeal and vulvovaginal), fungal urinary tract infection
Investigations: Increased serum gamma-glutamyl transpeptidase (GGT), increased serum alkaline phosphatase, positive Coombs test
Metabolism and nutrition disorders: Hyperglycemia, hypomagnesemia, hypophosphatemia
Nervous system disorders: Ischemic stroke
Renal and urinary system: Renal impairment, renal failure
Respiratory, thoracic, and mediastinal disorders: Dyspnea
Skin and subcutaneous tissue disorders: Urticaria
Vascular disorders: Venous thrombosis
Warnings
Contraindications
Hypersensitivity to any of the components
Cautions
Clinical cure rates lower in patients with baseline CrCl of 30 to ≤50 mL/min when compared with other antibiotics in clinical trials; monitor CrCl at least daily in patients with changing renal function and adjust dosage accordingly
Serious and occasionally fatal hypersensitivity (anaphylactic) reactions reported with beta-lactam antibacterial agents; before initiating therapy make careful inquiry about previous hypersensitivity reactions to other cephalosporins, penicillins, or other beta-lactams; if this product is to be given to a patient with a cephalosporin, penicillin, or other beta-lactam allergies, exercise caution because cross-sensitivity has been established; if an anaphylactic reaction occurs, discontinue drug and institute appropriate therapy
Prescribing antibiotics in the absence of a proven or strongly suspected bacterial infection is unlikely to provide benefit to the patient and risks the development of drug-resistant bacteria
Clostridium difficile-associated diarrhea
- As with all antibiotics, Clostridium difficile-associated diarrhea (CDAD) has been reported; may range in severity from mild diarrhea to fatal colitis; treatment with antibacterial agents alters normal flora of colon and may permit overgrowth of C. difficile
- C. difficile produces toxins A and B which contribute to development of CDAD; CDAD must be considered in all patients who present with diarrhea following antibacterial use; careful medical history is necessary because CDAD has been reported to occur more than 2 months after administration of antibacterial agents
- If CDAD is confirmed, discontinue antibacterials not directed against C. difficile, if possible; manage fluid and electrolyte levels as appropriate, supplement protein intake, monitor antibacterial treatment of C. difficile, and institute surgical evaluation as clinically indicated
Pregnancy & Lactation
Pregnancy
There are no data available on ceftolozane/tazobactam or its individual components regarding use in pregnant women to assess drug-associated risk of major birth defects, miscarriage or adverse maternal or fetal outcomes
Human data: Although available studies with multiple cephalosporins cannot definitively establish absence of risk, published data from prospective cohort studies, case series, and case reports over several decades have not identified an association of cephalosporin use during pregnancy with major birth defects, miscarriage, or other adverse maternal or fetal outcomes
Lactation
There are no data on presence of either drug component in human milk; there are no data on effects of either drug component on breastfed infant, or on milk production
Developmental and health benefits of breastfeeding should be considered along with the mother’s clinical need for therapy and any potential adverse effects on breastfed child from therapy or from underlying maternal conditions
Pregnancy Categories
A: Generally acceptable. Controlled studies in pregnant women show no evidence of fetal risk.
B: May be acceptable. Either animal studies show no risk but human studies not available or animal studies showed minor risks and human studies done and showed no risk. C: Use with caution if benefits outweigh risks. Animal studies show risk and human studies not available or neither animal nor human studies done. D: Use in LIFE-THREATENING emergencies when no safer drug available. Positive evidence of human fetal risk. X: Do not use in pregnancy. Risks involved outweigh potential benefits. Safer alternatives exist. NA: Information not available.Pharmacology
Mechanism of Action
Ceftolozane: Cephalosporin that has demonstrated potent in vitro activity against Pseudomonas aeruginosa
Tazobactam: Beta-lactamase inhibitor
Absorption
Day 1 measurements
Peak plasma time: 1.02 hr
Peak plasma concentration: 65.7/17.8 mcg/mL (cIAI, cUTI); 105/26.4 mcg/mL (HABP/VABP)
AUC: 186/35.8 mcg•h/mL (cIAI, cUTI); 392/73.3 mcg•h/mL (HABP/VABP)
Distribution
Protein bound: 16-21/30%
Vd: 13.5/18.2 L
Metabolism
Ceftolozane: Not metabolized to any appreciable extent
Tazobactam: The beta-lactam ring is hydrolyzed to form the pharmacologically inactive tazobactam metabolite M1
Elimination
Half-life: 2.77/0.91 hr
Renal clearance (ceftolozane): 3.41-5.59 L/hr
Excretion
- Ceftolozane: >95% excreted unchanged in urine
- Tazobactam: >80% excreted as the parent compound with the remainder excreted as the M1 metabolite
Administration
IV Compatibilities
0.9% NaCl
D5W
IV Preparation
Reconstitute vial with 10 mL of sterile water for injection or 10 mL 0.9% NaCl and gently shake to dissolve
Final volume is ~11.4 mL
Must be further diluted; reconstituted solution is NOT for direct injection
Withdraw appropriate volume for dose (see list below) and add to 100 mL of 0.9% NaCl or D5W
Inspect for particulate matter and discoloration; color ranges from clear, colorless solutions to solutions that are clear and slightly yellow
Dose volume
- 3 g (2 g/1 g): 2 vials of 11.4 mL each (entire contents from 2 vials)
- 2.25 g (1.5 g/0.5 g): 11.4 mL from 1 vial (entire contents) and 5.7 mL from a second vial
- 1.5 g (1 g/0.5 g): 11.4 mL (entire vial contents)
- 750 mg (500 mg/250 mg): 5.7 mL
- 450 mg (300 mg/150 mg): 3.5 mL
- 375 mg (250 mg/125 mg): 2.9 mL
- 150 mg (100 mg/50 mg): 1.2 mL
IV Administration
Infuse IV over 1 hr
Storage
Unreconstituted vials: Store refrigerated 2-8°C (36-46°F); protect from light
Reconstituted vials: May keep at room temperature for 1 hr before transfer and dilution in infusion bag
Diluted solution (IV bag): Stable for 24 hr when stored at room temperature or 7 days when refrigerated at 2-8°C (36-46°F)
Do not freeze
Images
Patient Handout
ceftolozane-tazobactam intravenous
CEFTOLOZANE/TAZOBACTAM - INJECTION
(sef-TOL-oh-zane/TAZ-oh-BAK-tam)
COMMON BRAND NAME(S): Zerbaxa
USES: Ceftolozane/tazobactam is used to treat a variety of bacterial infections. It is a cephalosporin antibiotic. It works by stopping the growth of bacteria.
HOW TO USE: This medication is given by injection into a vein as directed by your doctor, usually every 8 hours. It should be injected slowly over 1 hour. The dosage is based on your medical condition and response to treatment. For children, the dosage is also based on their weight.If you are using this medication at home, learn all preparation and usage instructions from your health care professional. Before using, check this product visually for particles or discoloration. If either is present, do not use the liquid. Learn how to store and discard medical supplies safely.For the best effect, use this antibiotic at evenly spaced times. To help you remember, use this medication at the same time(s) every day.Continue to use this medication until the full prescribed treatment period is finished, even if symptoms disappear after a few days. Stopping the medication too early may result in a return of the infection.Tell your doctor if your condition lasts or gets worse.
SIDE EFFECTS: Pain, redness, or irritation at the injection site may occur. Nausea, diarrhea, or headache may also occur. If any of these effects last or get worse, tell your doctor or pharmacist promptly.Remember that this medication has been prescribed because your doctor has judged that the benefit to you is greater than the risk of side effects. Many people using this medication do not have serious side effects.Tell your doctor right away if you have any serious side effects, including: muscle cramps, weakness, fast/slow/irregular heartbeat, signs of kidney problems (such as change in the amount of urine).Get medical help right away if you have any very serious side effects, including: confusion, trouble speaking.This medication may rarely cause a severe intestinal condition due to a bacteria called C. difficile. This condition may occur during treatment or weeks to months after treatment has stopped. Tell your doctor right away if you develop: diarrhea that doesn't stop, abdominal or stomach pain/cramping, blood/mucus in your stool.If you have these symptoms, do not use anti-diarrhea or opioid products because they may make symptoms worse.Use of this medication for prolonged or repeated periods may result in oral thrush or a new yeast infection. Contact your doctor if you notice white patches in your mouth, a change in vaginal discharge, or other new symptoms.A very serious allergic reaction to this drug is rare. However, get medical help right away if you notice any symptoms of a serious allergic reaction, including: rash, itching/swelling (especially of the face/tongue/throat), severe dizziness, trouble breathing.This is not a complete list of possible side effects. If you notice other effects not listed above, contact your doctor or pharmacist.In the US -Call your doctor for medical advice about side effects. You may report side effects to FDA at 1-800-FDA-1088 or at www.fda.gov/medwatch.In Canada - Call your doctor for medical advice about side effects. You may report side effects to Health Canada at 1-866-234-2345.
PRECAUTIONS: Before using ceftolozane/tazobactam, tell your doctor or pharmacist if you are allergic to it; or to cephalosporins, penicillins, or other antibiotics; or if you have any other allergies. This product may contain inactive ingredients, which can cause allergic reactions or other problems. Talk to your pharmacist for more details.Before using this medication, tell your doctor or pharmacist your medical history, especially of: kidney disease.This medication contains sodium. Consult your doctor or pharmacist if you are on a salt-restricted diet or if you have a condition that could be worsened by an increase in salt intake (such as congestive heart failure, high blood pressure).Ceftolozane/tazobactam may cause live bacterial vaccines (such as typhoid vaccine) to not work well. Tell your health care professional that you are using ceftolozane/tazobactam before having any immunizations/vaccinations.Before having surgery, tell your doctor or dentist about all the products you use (including prescription drugs, nonprescription drugs, and herbal products).During pregnancy, this medication should be used only when clearly needed. Discuss the risks and benefits with your doctor.It is unknown if this medication passes into breast milk. Consult your doctor before breast-feeding
DRUG INTERACTIONS: Drug interactions may change how your medications work or increase your risk for serious side effects. This document does not contain all possible drug interactions. Keep a list of all the products you use (including prescription/nonprescription drugs and herbal products) and share it with your doctor and pharmacist. Do not start, stop, or change the dosage of any medicines without your doctor's approval.This medication may interfere with certain laboratory tests (including certain urine glucose tests), possibly causing false test results. Make sure laboratory personnel and all your doctors know you use this drug.
OVERDOSE: If someone has overdosed and has serious symptoms such as passing out or trouble breathing, call 911. Otherwise, call a poison control center right away. US residents can call their local poison control center at 1-800-222-1222. Canada residents can call a provincial poison control center.
NOTES: Lab and/or medical tests (such as complete blood count, kidney function) may be done while you are using this medication. Keep all medical and lab appointments. Consult your doctor for more details.
MISSED DOSE: It is important to get each dose of this medication as scheduled. If you miss a dose, ask your doctor or pharmacist right away for a new dosing schedule. Do not double the dose to catch up.
STORAGE: Consult the product instructions and your pharmacist for storage details. Keep all medications away from children and pets.Do not flush medications down the toilet or pour them into a drain unless instructed to do so. Properly discard this product when it is expired or no longer needed. Consult your pharmacist or local waste disposal company.
Information last revised December 2022. Copyright(c) 2022 First Databank, Inc.
IMPORTANT: HOW TO USE THIS INFORMATION: This is a summary and does NOT have all possible information about this product. This information does not assure that this product is safe, effective, or appropriate for you. This information is not individual medical advice and does not substitute for the advice of your health care professional. Always ask your health care professional for complete information about this product and your specific health needs.
Formulary
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