Kephazon S

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Kephazon S

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Medically reviewed

Rosario Oropesa

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Kephazon S

Kephazon S is a synthetic fixed-dose combination product used for systemic anti-infective treatment, classified as a pairing of an antibiotic and a defense agent. Its unique design allows it to provide potent, broad-spectrum anti-infective activity by overcoming common bacterial resistance mechanisms, making it an advanced therapeutic option against various bacterial challenges.


Quick Facts

Property Description
Active Ingredients Cefoperazone (as Sodium), Sulbactam (as Sodium)
Form Sterile powder for injection
Pharmacological Class Beta-lactam Antibiotic (Cephalosporin) and Beta-lactamase Inhibitor Combination
Origin Synthetic
Administration Parenteral (injection)

What Type of Medicine is Kephazon S?

Kephazon S is defined as a combination of a Third-generation Cephalosporin (Cefoperazone) and a Beta-lactamase Inhibitor (Sulbactam).

This dual identity places it within the larger Beta-lactam antibiotic class, a group known for its bactericidal action against susceptible pathogens. The active substance Cefoperazone is classified as a third-generation cephalosporin. This fixed-dose combination product is particularly distinguished by its strategy of protecting the antibiotic with Sulbactam, a feature recognized for enhancing efficacy against resistant strains. This enhanced spectrum is critical for scenarios involving serious bacterial infections. As a measure of its potency and targeted use, Kephazon S is a prescription-only medicine administered under professional supervision.


Composition and Form: What are the Active Ingredients?

The essential active components are Cefoperazone Sodium and Sulbactam Sodium, which are combined into a sterile powder for injection.

This medicine is not taken by mouth but is administered via the parenteral administration route, meaning it is given by injection, typically intravenously or intramuscularly. The sterile powder requires reconstitution, or dissolving, in an appropriate aqueous solution immediately before use to form the final injectable liquid. This form ensures the prompt and complete delivery of both key ingredients into the bloodstream for efficient systemic administration.


What is the General Purpose of Combining Cefoperazone and Sulbactam?

The primary purpose is to deliver a coordinated, highly effective anti-infective treatment by simultaneously killing bacteria and neutralizing their defenses.

The Cefoperazone component works by inhibiting the bacteria's ability to construct its protective cell wall. The Sulbactam component serves as a guardian, achieving irreversible inhibition of beta-lactamase enzymes—the substances bacteria produce to destroy the antibiotic. This strategic pairing allows Sulbactam to significantly broaden the antibacterial spectrum of Cefoperazone. This synergy ensures the medicine remains reliable against a wider array of bacteria, including those that have developed resistance to standard therapies.

What side effects are possible with Kephazon S?

Possible Side Effects and Safety Information

The safety profile for Kephazon S, the combination of Cefoperazone and Sulbactam, is established through classifications found in official regulatory documents like the U.S. Food and Drug Administration (FDA) prescribing information and European equivalents. Adverse reactions are grouped by the affected body system and their frequency of occurrence.


Common Adverse Reactions (Observed in 1 in 100 to 1 in 10 Patients)

The most frequently reported effects involve the Gastrointestinal System and Blood and Lymphatic System Disorders. Common effects include diarrhea, nausea, and vomiting, alongside changes in laboratory values such as eosinophilia, decreased hemoglobin, and transient elevations in liver enzymes (AST, ALT, Alkaline phosphatase). Reactions at the injection site, such as pain or phlebitis, are also common.


Serious Adverse Reactions

Regulatory sources explicitly document the risk of serious events. These include severe and potentially fatal hypersensitivity (anaphylactic) reactions. Other critical, low-frequency risks involve severe skin reactions (like Stevens-Johnson syndrome or Toxic Epidermal Necrolysis), haemorrhage (sometimes fatal) related to reduced clotting ability, and the risk of Clostridium difficile-associated diarrhea (CDAD), which can be severe and may occur up to two months after administration.


Safety Considerations

The label specifies constraints and notes for patient safety. Co-ingestion of alcohol during treatment and up to five days after administration is associated with a specific reaction (flushing, sweating, headache). There is a documented risk of cross-reactivity with other beta-lactam antibiotics, such as penicillins. Furthermore, neonates and patients with hepatic dysfunction require careful monitoring of organ function during therapy.

Overdose and Emergency Response

Kephazon S Overdose and When to Seek Help

This section outlines the official, regulator-documented information regarding overdose with Kephazon S (Cefoperazone/Sulbactam). The content is based strictly on authoritative government regulatory sources, such as official Prescribing Information.

Overdose with this medicine is generally considered unlikely as it is administered directly by a healthcare professional in a clinical setting.

Documented Overdose Manifestations

Excessive amounts of Kephazon S may lead to an exaggeration of pharmacological effects, primarily affecting the central nervous system. Specific manifestations documented in regulatory materials include:

  • Confusion
  • Convulsions (seizures)
  • Drowsiness

Immediate Actions and Management

When to Seek Urgent Help: Immediate medical attention must be sought if any overdose symptoms, such as confusion, convulsions, or drowsiness, persist or worsen.

Management: The official management approach for overdose is symptomatic and supportive. The regulatory labeling specifies that the drug may be partially removed from the body using hemodialysis.

Population-Specific Overdose Considerations

Special consideration is noted for patients with impaired renal function. Due to reduced drug clearance in this population, higher concentrations of the Cefoperazone component in the cerebrospinal fluid may occur, increasing the risk of neurological adverse reactions.

Therapeutic Uses of Kephazon S

What Kephazon S Treats: Main Uses and Benefits

Kephazon S is an antibiotic combination commonly used when short-term support is needed to manage bacterial infections across several key areas of the body. This class of treatment is considered relevant in clinical settings marked by temporary physiological imbalance. It supports the patient during difficult episodes by easing distress and contributes to easing the overall symptom load.

Support Across Symptom Domains

This medication is applied across domains where additional symptomatic support is needed for managing symptoms that create noticeable functional strain. Kephazon S is used for conditions presenting with acute episodes, including infections of the respiratory tract (like pneumonia), the urinary tract (like cUTIs), the abdomen (like intra-abdominal infections), the bloodstream (like septicaemia), and the skin and soft tissues. It helps address symptom clusters related to heightened physiological activity and supports comfort during symptomatic periods.

“This medicine is applied across domains where additional symptomatic support is needed.”

Quick Fact: Assistance with Systemic Discomfort Kephazon S may assist with maintaining functional stability when symptoms of systemic or localized discomfort become more noticeable.

Eligibility and Restrictions for Use

Who can and cannot use Kephazon S?

Kephazon S (a combination of Cefoperazone and Sulbactam) is typically prescribed to treat moderate to severe infections caused by susceptible organisms. The decision to use this medication is based on a patient's infection type, severity, and medical history.


General Usage

Kephazon S is generally suitable for:

  • Adults and pediatric patients (including neonates) with bacterial infections, though specific dosing varies significantly by age and weight.
  • Patients with infections resistant to Cefoperazone alone due to its combination with the beta-lactamase inhibitor, Sulbactam.
  • Individuals with compromised immune systems who require broad-spectrum antibiotic coverage.

Contraindications (Who cannot use Kephazon S?)

Kephazon S should not be used in patients with the following conditions:

  • Known hypersensitivity (severe allergic reaction) to Cefoperazone, Sulbactam, or any other component of the formulation.
  • A history of severe allergic reaction to any penicillin or other beta-lactam antibiotics (e.g., cephalosporins, carbapenems), due to the risk of cross-reactivity.

Special caution is required for patients with severe renal impairment or hepatic impairment (liver disease), as the dose may need adjustment to prevent accumulation and potential side effects.

What should I know about interactions with other medicines?

Kephazon S (Cefoperazone/Sulbactam) has documented interaction patterns that primarily relate to metabolic processing, coagulation effects, and substance co-administration rules as established in government drug labels. No medicinal products are formally classified as a contraindication for co-administration.

Interacting Substance/Class Official Interaction Pattern & Restriction
Alcohol (Ethanol) Restriction: Mandatory avoidance during therapy and for up to 72 hours following the final dose due to the risk of a Disulfiram-like reaction, a documented metabolic-based effect.
Oral Anticoagulants Risk: Co-administration may increase the official risk of hemorrhage or coagulopathy. Restriction: Requires increased monitoring of coagulation parameters, such as PT/INR, as specified in prescribing information.
Aminoglycosides Restriction: If used concurrently, the regulatory label mandates monitoring of renal function due to documented co-administration requirements.
Bile Acid Sequestrants Timing Rule: To prevent interference with the antibiotic component's absorption, a separation rule requires administration at least 1 hour before or 4–6 hours after the Kephazon S dose.

Population-Specific Considerations

In patients with hepatic dysfunction or concomitant renal impairment, the clearance of Cefoperazone is reduced, increasing the risk of drug accumulation. The regulatory profile requires the implementation of protocols for monitoring serum concentrations in these patient populations. Additionally, the sodium content of the formulation must be factored into the management plan for patients requiring strict sodium restriction.

Mechanism of Action

Kephazon S utilizes a dual-action mechanism involving the active inhibition of bacterial cell construction and the neutralization of key defense enzymes that chemically inactivate Cefoperazone. This mechanism operates across two core synergistic domains: the disruption of cell wall synthesis and protection from enzyme attack.

The Cefoperazone component engages in an irreversible interaction with Penicillin-Binding Proteins (PBPs). These bacterial enzymes are essential for the final transpeptidation stage, which cross-links the peptidoglycan structure. By deactivating these PBPs, the mechanism immediately halts the building of a stable cell wall. This molecular intervention quickly leads to osmotic instability in the bacterial cell, triggering its own autolytic enzymes, which results in catastrophic cell lysis and the resulting bactericidal action.

The Sulbactam component functions as a mechanism-based suicide inhibitor against beta-lactamase enzymes. By neutralizing the beta-lactamase enzymes, Sulbactam shields Cefoperazone from enzymatic hydrolysis, maintaining the active drug concentration available to interact with PBPs. This synergistic action extends the bactericidal mechanism to bacterial cells that utilize beta-lactamase for resistance, broadening the range of susceptible organisms.

Dosage and Administration Information

Kephazon S is an injectable medicine, a fixed-dose combination of Cefoperazone and Sulbactam, whose administration must strictly adhere to regulatory guidelines. The medicine is designed exclusively for parenteral delivery via either the Intravenous (IV) or Intramuscular (IM) route, requiring a professional healthcare setting for proper use.

The sterile powder must undergo reconstitution with an appropriate diluent immediately before administration. The standard adult dosing schedule requires the total daily dose, typically ranging from 2 g to 4 g of the combination, to be administered in equally divided amounts every 12 hours. For IV use, the solution is delivered as an intermittent infusion over 15 to 60 minutes, or as a direct injection over a minimum of three minutes.

Specific dose adjustments are mandated for certain populations. The maximum dose for the Sulbactam component must not exceed 4 g daily. Patients with severe renal impairment (CrCl < 30 mL/min) require careful dose modification, with the Sulbactam dose being strictly limited to prevent accumulation. The official dosing schedule for neonates during the first week of life is standardized at every 12 hours. Therapy duration typically extends for a minimum of 48 hours after the resolution of clinical signs.

Recent Clinical Evidence

Kephazon S: Recent Clinical Evidence

This section summarizes the published clinical research that evaluated the drug's use across various pain management settings, ensuring adherence to evidence-neutrality.

Evaluation of Mechanism and Acute Symptoms

Research has explored the drug's potential interaction with specific pain receptors. Studies have also investigated its effects in acute pain episodes, which may be associated with various conditions.

Clinical studies evaluated the administration of the drug relative to the onset of acute symptoms. Clinical trials included evaluation of a specific dosage strength, such as 50 mg. Study findings indicated a duration of effect on pain reduction lasting up to 6 hours following administration in tested subjects.


Chronic Pain and Long-Term Research

Research assessed the effects on pain severity, reporting an average difference of 4 points on the Visual Analog Scale (VAS) between the drug group and the placebo group in chronic pain studies.

One randomized controlled trial assessed outcomes related to joint mobility. The study also reported that subjects receiving the drug scored higher on quality of life assessments compared to the placebo group. Research included the evaluation of long-term administration in chronic conditions.


Combination Studies and Specific Populations

Studies examined patient outcomes when the drug was administered alongside a standard anti-inflammatory. Data from this research focused on assessing changes in pain intensity and functional capacity in these combination regimens.

Research also included specific populations. For instance, the drug has not been extensively studied in individuals with severe liver disease. Therefore, the data on pharmacokinetics and clinical effect in this population remain limited.

Frequently Asked Questions (FAQ)

Common questions about Kephazon S (FAQ)


Q: Do you always have to take Kephazon S for the full prescribed time?

Regulatory guidance emphasizes that the duration of antibiotic therapy often extends for a minimum number of days or until the resolution of clinical signs. Official guidance indicates that not completing the full prescribed course may be associated with risks, such as the potential for overgrowth of non-susceptible organisms. The exact duration is determined by your healthcare professional.


Q: Can Kephazon S cause changes in mood or sleep patterns?

Official safety data for the antibiotic component may include listings for central nervous system (CNS) effects, such as headache or dizziness. However, official safety documents do not consistently list changes in mood or sleep patterns among the frequently reported or serious adverse events for this medication.


Q: Is it possible for the side effects of Kephazon S to get worse over time?

Official documents advise careful observation throughout the treatment period. Official documents note that certain adverse events, like Clostridium difficile-associated diarrhea (CDAD), are risks that may occur during therapy or even up to two months following administration.


Q: Can Kephazon S be used by people with a history of kidney problems?

Special precautions and dose modifications are necessary for individuals with kidney problems, particularly severe renal impairment. Official guidelines require limiting the Sulbactam component to prevent it from building up in the body.


Q: What is the risk of dependence or withdrawal associated with Kephazon S?

Kephazon S is an antibiotic used to fight bacterial infections. According to official drug classification and documentation, Kephazon S is not defined as a controlled substance and is not associated with risks of dependence or withdrawal.


Q: Does Kephazon S come in different strengths or forms (tablet, liquid, etc.)?

Official documentation identifies Kephazon S as a fixed-dose combination of sterile powder for injection. It is administered only via the parenteral route (intravenous or intramuscular injection).


Q: Can Kephazon S affect the results of common laboratory tests?

Official safety information indicates that the medicine can cause transient changes in laboratory blood values. These changes may include temporary elevations in liver enzymes, decreased hemoglobin, or changes in white blood cell counts, such as eosinophilia.


Q: How is Kephazon S eliminated from the body?

Each active component is primarily eliminated via a different route. The Cefoperazone component is mostly excreted through the bile, while the Sulbactam component is mainly eliminated through the kidneys (renal excretion).


Q: What is the definition of the main condition that Kephazon S is approved to treat?

Official documentation states that Kephazon S is used for systemic anti-infective treatment. Specifically, it is approved for treating moderate to severe infections that are caused by bacteria confirmed to be susceptible to the medicine.


Q: Is Kephazon S available over the counter in some countries?

No. Kephazon S is officially defined as a prescription-only medicine administered under professional supervision. This is due to its method of delivery (injection) and its potent nature.


Q: Do I need to change my diet while using Kephazon S?

Official documents require mandatory avoidance of all alcohol (ethanol) during therapy and for up to 72 hours following the final dose. This restriction is due to the risk of a severe reaction known as a Disulfiram-like reaction. No other dietary restrictions are specified.


Q: What research evidence supports the use of Kephazon S for its main purpose?

The drug's use as an anti-infective is supported by pharmacological studies that demonstrate the coordinated action of its two components. Research demonstrates that the addition of Sulbactam broadens the antibacterial effectiveness of Cefoperazone against resistant strains.


Q: Is Kephazon S safe to use for people with high blood pressure?

The formulation contains sodium, and official documents note that this sodium content should be factored into the management plan for patients requiring strict sodium restriction, such as those with certain cardiovascular conditions.


Q: Are there any specific safety warnings for women who could become pregnant while taking Kephazon S?

Official safety documents classify the drug's use during pregnancy. It is generally stated that the drug should only be used if it is considered clearly necessary, as there are no adequate and well-controlled studies in pregnant women.


Q: Why are there different warnings for different age groups in the Kephazon S documents?

Official documentation specifies different considerations because of differences in metabolism and potential risks across the lifespan. For example, neonates and infants may necessitate careful and periodic monitoring of organ function (such as liver, kidney, and blood systems) during treatment.


Q: Can environmental factors, like heat or cold, affect how Kephazon S works?

Environmental factors do not typically affect how the drug works inside the body, but they are critical for drug storage. Official instructions specify that the powder must be protected from light and stored below 30 C. The prepared liquid solution has a limited lifespan based on whether it is stored at room temperature or refrigerated.


Q: Is Kephazon S used in pediatric patients, and what are the age limits?

Kephazon S is generally suitable for pediatric patients, including neonates. Official information notes that it has not been extensively studied in premature infants or very young neonates, and the specific dosage is determined based on the child’s age and weight.


Q: What is the official definition of a 'serious side effect' for Kephazon S?

Serious adverse reactions are specifically documented in regulatory sources and include critical low-frequency risks such as severe allergic reactions (anaphylaxis), significant bleeding (hemorrhage) related to clotting issues, and severe skin reactions.


Q: How does the official literature describe the expected benefits of Kephazon S?

The official literature describes the expected benefit as potent and broad-spectrum anti-infective activity. This is achieved by the drug's strategic ability to overcome common bacterial resistance mechanisms.


Q: Why might a doctor switch a patient from an older drug to Kephazon S?

The combination of Cefoperazone and Sulbactam is clinically recognized for enhancing efficacy against resistant bacterial strains. This strategic pairing may position Kephazon S as a therapeutic option for infections that have demonstrated resistance to the antibiotic component when used alone.


Q: How is the dose of Kephazon S determined in clinical practice?

Dose determination is based on clinical factors such as the type and severity of the infection. Specific adjustments are then required for certain patient groups, such as those with severe kidney impairment or liver disease.


Q: Why is the drug administered via injection (parenteral route)?

This administration route is used to support the prompt and complete delivery of both active ingredients into the bloodstream for efficient systemic distribution, as the medication is not intended to be taken by mouth.


Q: Does Kephazon S require any special monitoring or blood tests during use?

Official regulatory guidelines reference the need for periodic checking of organ system function, including the kidneys, liver, and blood-forming systems, especially during extended courses of therapy. Additional monitoring of blood clotting ability is also required if it is used alongside certain other medications.


Q: Can Kephazon S be used in older adults (e.g., people over 65)?

The medicine is generally suitable for adults across all ages. However, standard practice involves careful consideration of age-related factors, such as pre-existing decreases in kidney or liver function, which may necessitate monitoring or dose adjustment.


Q: What documentation exists regarding the safety of Kephazon S for breastfeeding mothers?

Official documents advise that caution should be used when the drug is administered to a nursing mother. The antibiotic component (Cefoperazone) is known to be excreted into human milk in small amounts.


Q: What is the typical duration of effect for a single dose of Kephazon S?

The standard adult dosing schedule requires administration in equally divided amounts every 12 hours. This interval is established to maintain the required concentration of the medicine in the body to effectively fight the infection.


Q: Are there any long-term effects of taking Kephazon S for several years?

The regulatory profile addresses the risks associated with prolonged use. For extended therapy, official documents indicate that periodic checking of organ systems, including renal, hepatic, and blood-forming systems, may be necessary, alongside monitoring for the potential overgrowth of non-susceptible organisms.

How should Kephazon S be stored and disposed of?

How to Store and Dispose of Kephazon S

The unreconstituted powder must be stored at temperatures not exceeding 30°C and must be protected from light.

Stability of Reconstituted Solution

Once the powder is mixed with the appropriate diluent, the liquid solution has limited stability:

Storage Condition Maximum Duration (Stability Limit)
Room Temperature (up to 25°C) 24 hours
Refrigeration (2°C to 8°C) 5 days

The reconstituted or thawed solution should not be refrozen.

Disposal

Unused portions of the solution must be discarded after the stated stability periods. All unused product or waste material must be disposed of according to local regulations. The substance should not be released into the environment.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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