Цефотаксим

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Цефотаксим

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Overview of Цефотаксим

What is Цефотаксим?

Цефотаксим (Cefotaxime) is a powerful, semisynthetic beta-lactam antibiotic classified as a third-generation cephalosporin, primarily used to fight serious bacterial infections.


Quick Facts

Property Description
Active ingredient Cefotaxime (typically as Cefotaxime sodium)
Form Powder for injection/solution
Pharmacological class beta-Lactam antibiotic / Third-generation cephalosporin
General purpose Clearing up systemic bacterial infections
Origin Semisynthetic

What Type of Antibiotic is Цефотаксим?

Цефотаксим is a core anti-infective agent clinically recognized for its efficacy against a wide range of bacterial pathogens. It belongs to the cephalosporin family, sharing the core beta-lactam chemical structure but demonstrating enhanced stability against many bacterial defense mechanisms. Its designation as a third-generation agent gives it a crucial advantage over older antibiotics, especially due to its enhanced resistance to common bacterial beta-lactamase enzymes, making it effective against a broad spectrum of microorganisms. This classification reflects why Цефотаксим is a reliable option for managing infections where bacteria may have developed resistance to treatments based on first or second-generation compounds.


Composition, Origin, and Pharmaceutical Form

The medicine is supplied as the single active ingredient, Cefotaxime, often in the form of Cefotaxime sodium. Its semisynthetic origin means the compound has been chemically engineered to improve its effectiveness and stability compared to purely naturally derived substances. Because Цефотаксим is poorly absorbed and unstable when taken orally, it is formulated as a sterile powder for injection or solution. This form requires parenteral administration (injection or infusion) to ensure the full, active concentration reaches the bloodstream for effective action. This specialized form is necessary to ensure the drug can fight systemic infection efficiently, distinguishing it from common orally administered antibiotics.


What is the General Purpose of Цефотаксим?

The overall purpose of Цефотаксим is to help the body effectively clear up serious bacterial infections. The drug achieves this through a bactericidal action, meaning it actively kills the invading bacteria by targeting and disrupting the rigid protective cell wall structure essential for their survival. A typical use scenario involves combating acute infections in a hospital setting. This capacity to eliminate a wide range of susceptible bacteria positions Цефотаксим as a critical therapeutic tool used when controlling the proliferation and spread of bacterial disease is medically required.

Regulatory References

  1. WHO Essential Medicines, 2023
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What side effects are possible with Цефотаксим?

Possible side effects and safety information

Regulatory documents structure the safety profile of Cefotaxime by classifying potential adverse reactions according to frequency, system involvement, and clinical seriousness. This information is drawn from official sources like the FDA and EMA and includes common, uncommon, and rare events.

Frequency-Classified Adverse Reactions (SmPC/EMA Aligned)

Frequency Selected Adverse Reactions
Common (1% to 10%) Diarrhoea, Pain/Inflammation at injection site.
Uncommon (0.1% to 1%) Leukopenia, Eosinophilia, Thrombocytopenia, Convulsions, Rash, Pruritus, Increase in liver enzymes (ALT, AST) and/or bilirubin.
Not Known Anaphylactic shock, Pseudomembranous colitis, Encephalopathy, Severe Cutaneous Adverse Reactions (SJS, TEN, DRESS), Arrhythmia.

Systemic and Serious Reactions

Adverse effects are documented across multiple System-Organ Classes, including the Blood and Lymphatic System (e.g., agranulocytosis, neutropenia) and Nervous System (e.g., headache, dizziness, encephalopathy).

Serious Adverse Reactions explicitly documented in regulatory labeling include anaphylactic shock (a potentially fatal hypersensitivity reaction), Severe Cutaneous Adverse Reactions (SCARs), and Pseudomembranous colitis. Encephalopathy and convulsions are noted, particularly with high doses in patients with renal impairment.


Safety Considerations and Restrictions

The medicine is contraindicated in individuals with a known history of immediate-type hypersensitivity to cephalosporins, and caution is advised in those with a history of penicillin allergy due to the risk of cross-allergy. Population-specific safety notes highlight that the risk of toxic reactions is increased in patients with renal impairment, often requiring a dosage adjustment. Prolonged use (over 10 days) has been associated with disturbances in blood counts, such as granulocytopenia, and may lead to superinfection by non-susceptible organisms.

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Overdose and Emergency Response

Cefotaxime overdose presents primarily with signs of Central Nervous System (CNS) excitation. Documented manifestations include convulsions (cramps, seizures), myoclonia, and reversible encephalopathy characterized by impaired consciousness. Gastrointestinal symptoms such as nausea, vomiting, and diarrhea are also officially noted.

A critical risk documented in regulatory information is the potential for life-threatening arrhythmia, which has been reported following rapid intravenous administration through a central venous catheter.

The risk of these severe CNS effects is increased in patients with severely restricted kidney function (renal insufficiency) and in those with underlying conditions like epilepsy or meningitis.

In any situation where overdose is suspected, immediate medical attention must be sought. Official emergency instructions state that the medication must be discontinued immediately. While no specific antidote exists, supportive treatment is required. Regulatory procedures note that hemodialysis or peritoneal dialysis can be used to accelerate the elimination of the drug and its active metabolite from the plasma. Specific treatment for drug-induced convulsions involves the use of diazepam or phenobarbital, with phenytoin use being specifically advised against.

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Therapeutic Uses of Цефотаксим

What Цефотаксим Treats: Main Uses and Benefits

Цефотаксим (Cefotaxime) is commonly used across domains where additional symptomatic support is needed in situations involving certain distressing symptoms. This medication is applied when appropriate for conditions presenting with acute or disruptive symptom patterns, such as septicemia, certain types of meningitis, severe pneumonia, and complicated infections of the urinary tract or abdomen. The general therapeutic benefit provides support that helps ease the overall symptom burden, relevant in contexts marked by increased discomfort or tension.

It assists in managing symptoms that may become intense or disruptive, helping patients cope more steadily during difficult episodes. In clinical settings, it helps address systemic distress symptoms (like high fever and chills) and neurological warning signs (like confusion or severe headache) linked to serious infection.

“It is applicable within clinical settings that involve acute or disruptive symptom patterns, offering symptomatic support when discomfort is heightened.”

Quick Facts: Relief for Acute Systemic Symptoms

Property Description
Supports management of Symptoms related to systemic imbalance and physical discomfort
Context Applied in situations involving acute or disruptive symptom patterns
Patient Benefit Helps reduce the overall symptom burden

Regulatory References

  1. NIH MedlinePlus Drug Information on Cefotaxime
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Eligibility and Restrictions for Use

Eligibility Scope

Classification Status / Conditions
Absolute Contraindication History of immediate-type allergy (hypersensitivity) to Цефотаксим or any other cephalosporin [Medsafe SmPC]. Absolute contraindication applies to patients with a major allergy to penicillins due to cross-reactivity risk [HPRA SmPC].
Lidocaine-Formulation Restriction When reconstituted with Lidocaine diluent, use is contraindicated in infants under 30 months old, patients with severe heart failure, or non-paced heart block [EFDA SmPC].
Age-Group Eligibility Adults and Children are generally eligible. Use in the Geriatric population is established but requires caution due to potential age-related kidney decline [Mayo Clinic]. Neonates require restricted dosing due to immature kidney clearance [EFDA SmPC].
Organ Impairment Patients with impaired renal function are eligible but use is conditional, requiring a mandatory reduction in the total daily dosage to prevent prolonged drug levels [RxList/FDA-cited data].
Pregnancy and Lactation Pregnancy Category B (US FDA) allows conditional use if clearly needed [FDA Label]. The medicine is generally considered acceptable during breastfeeding as only low concentrations enter human milk [NCBI LactMed]. Regional labels may categorize use as contraindicated [Medsafe SmPC].

Eligibility-Context Constraints

Official documents define eligibility constraints primarily based on hypersensitivity and the patient's renal function. The use of specific diluents, such as Lidocaine, imposes additional, severe contraindications related to age and pre-existing cardiac conditions. The regulation of who can use Цефотаксим is therefore determined by explicit exclusions and mandatory dose modifications set forth by regulatory authorities.

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What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory information for Cefotaxime documents specific interaction patterns concerning drug clearance, additive toxicity, and physical compatibility.

Pharmacokinetic and Pharmacodynamic Interactions

Interacting Substance Official Regulatory Description
Probenecid Results in a clinically significant pharmacokinetic interaction by decreasing the total clearance of Cefotaxime, leading to increased drug concentrations. This effect is attributed to the inhibition of renal tubular secretion.
Aminoglycosides Co-administration has a documented potential to potentiate nephrotoxicity (additive adverse effect on kidney function). Monitoring is especially noted for higher dosages or prolonged therapy.
Anticoagulants (e.g., Warfarin) Co-administration may carry a potential for an increased risk of bleeding.

Administration and Compatibility Constraints

The drug label defines crucial procedural constraints for administration, primarily rooted in physical and chemical incompatibility:

  • Aminoglycosides and Sodium Bicarbonate Solutions must be administered separately and must not be mixed with Cefotaxime in the same syringe or infusion fluid.

Substance Interaction Notes

  • Ethanol (Alcohol): Official regulatory documentation explicitly states there is no evidence of a disulfiram-like reaction reported with the co-administration of Cefotaxime and ethanol.

The regulatory interaction structure confirms the need to manage drug exposure with agents like Probenecid and adhere to strict separation rules to avoid chemical incompatibility during preparation and administration.

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Mechanism of Action

How Цефотаксим Works: Mechanism of Action

Cefotaxime's mechanism involves interfering directly with the structural integrity of the bacterial cell.


Direct Inhibition of Bacterial Cell Wall Synthesis

This mechanism focuses on Penicillin-Binding Proteins (PBPs), bacterial enzymes that build the cell wall's rigid structure. Cefotaxime acts as a covalent inhibitor, irreversibly binding to and disabling the PBPs. This blocks the final cross-linking step of peptidoglycan synthesis, resulting in a weak, unstable cell wall that cannot withstand internal osmotic pressure, leading to osmotic instability and cell lysis.


Overcoming Enzymatic Bacterial Defense

This domain addresses the drug's mechanical stability. Cefotaxime's chemical structure grants it enhanced resistance to hydrolysis by many common beta-lactamase enzymes produced by bacteria. This preservation of the molecule ensures the core PBP-inhibition mechanism proceeds against a broad spectrum of microbes, leading to the disruption of microbial survival mechanisms.


Accessing Protected Compartments

Cefotaxime possesses the necessary physiochemical properties to penetrate the Central Nervous System (CNS), achieving concentrations in the Cerebrospinal Fluid (CSF) when the meninges are inflamed. This allows the core cell wall disruption mechanism to be active in the protected CNS compartment, resulting in cell lysis within this specific physiological area.

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Dosage and Administration Information

How to use Цефотаксим

Cefotaxime is supplied as a sterile powder for injection and is not approved for oral consumption. The medicine is administered parenterally, primarily via the intravenous (IV) route—as a slow injection over three to five minutes or intermittent infusion—or through intramuscular (IM) injection. Prior to administration, the powder requires reconstitution with an approved diluent, such as Sterile Water for Injection, and for infusion, subsequent dilution in compatible IV solutions like 0.9% Sodium Chloride is often necessary.

Standard adult dosing ranges from 1 g to 2 g and is administered at fixed intervals, typically every 4, 6, 8, or 12 hours, depending on the context of use. The total daily dose must not exceed 12 g per day. The therapy duration is generally instructed to continue for a minimum of 48 to 72 hours after the resolution of acute symptoms.

Dosage requires specific modification for certain populations; for instance, patients with severe renal impairment must have the maintenance dose halved. Dosing for pediatric patients is weight-based. Cefotaxime is not to be mixed with incompatible agents, such as aminoglycoside solutions, and solutions prepared with Lidocaine for IM use are never to be administered intravenously.

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Recent Clinical Evidence

Research Evidence / Overview of Studies for Cefotaxime

Evidence for Use in Serious Systemic Infections and Meningitis

Research was studied for its use in the context of acute, severe bacterial diseases, including septicemia (bloodstream infection) and bacterial meningitis. Studies research examined through clinical trials include non-comparative trials and Randomized Controlled Trials (RCTs), where Cefotaxime was evaluated in patient groups, sometimes with or against other therapies.

For meningitis, research has explored outcomes related to systemic or functional imbalance, such as patient recovery status and subsequent neurological outcomes over time, particularly in children and infants. Studies report measurements related to changes in bacteria from the Cerebrospinal Fluid (CSF). Findings describe patterns observed in the studies, but the evidence for comparison with alternatives remains limited in certain areas.

Research focusing on septicemia reports measurements related to patient clinical status and bacteriological status following treatment in hospitalized adults. Comparative evidence is not available from large, head-to-head studies for every specific pathogen or patient group, and post-investigatory follow-up is noted as an area needing continued research.


Evidence for Use in Severe Respiratory and Urinary Tract Infections

Cefotaxime was studied for its use in conditions like severe pneumonia (a lower respiratory tract infection) and complicated urinary tract infections (UTI). These studies included clinical trials that monitored outcomes related to physical discomfort and the clearance of the invading bacteria. Research has explored measurements of the resolution of clinical signs and symptoms and successful bacteriological changes in both pediatric patients and hospitalized adults with UTIs. Results apply only to the populations studied, and the evidence quality may vary across trials.


Evidence for Infection Prevention in Surgical Contexts

The evidence base for using Cefotaxime to prevent infection around surgery (prophylaxis) includes Randomized Controlled Trials (RCTs). The outcomes researchers monitored included measurements of surgical site infection rates, the incidence of bacterial presence in urine, and the duration of the patient's hospital stay. Trials exploring different prophylactic regimens described patterns related to infection prevention in the immediate post-operative observation period.


Evidence in Special Populations

Research has explored the use of Cefotaxime in children, infants, and adolescents for conditions such as meningitis and intra-abdominal infections. The evidence research describes patterns based on outcomes related to clinical status monitored in these younger patient groups. For older adults (geriatric populations), research explored outcomes monitoring physiological strain related to kidney and liver function, as changes in these organs may influence how the drug is processed.


What is Still Uncertain About Cefotaxime Research

Research is ongoing. Comparative evidence is lacking for certain patient groups or less common infection types. Data for certain groups remain insufficient, particularly for patients with specific comorbidities beyond the general adult population. The applicability of the research findings is fundamentally tied to the susceptibility of the local bacterial strains, which is a limitation of the static research findings. As noted, long-term effects are not fully established, and follow-up studies are needed to better characterize outcomes years after treatment for all indications.

Key Studies & References

  1. WHO Model List of Essential Medicines (EML) - Cefotaxime
  2. Cefotaxime – Application in Therapy and Current Clinical Research
  3. Activity of Cefotaxime versus Ceftriaxone against Pathogens Isolated from Various Systemic Infections (Comparative in-vitro study)
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Frequently Asked Questions (FAQ)

Common questions about Цефотаксим (FAQ)


Q: What are the symptoms of an overdose of Cefotaxime?

Official regulatory documents indicate that signs associated with receiving too much of the medicine may include convulsions (seizures). Other symptoms associated with overdose that have been reported include weakness, pale or blue-tinted skin or lips, and cold sensations. High levels of the medication have also been linked to encephalopathy, which refers to difficulties with brain function.


Q: What does 'reconstitution' mean for Cefotaxime?

The official product information specifies a minimum duration for the continuation of therapy. It is generally instructed that treatment should continue for at least 48 to 72 hours after the patient's acute symptoms have completely resolved. This duration is established to help ensure the body has sufficient time to clear the infection.


Q: How long after the infection is gone do I have to keep taking the antibiotic?

Reconstitution refers to the necessary process of preparing the medicine before it can be administered. According to the product information, this involves mixing the sterile dry powder found in the vial with a specified liquid diluent. This turns the powder into the solution required for injection or infusion.


Q: What should I do if I miss a scheduled dose?

Regulatory patient instructions advise that if a dose is missed, you should try to take it as soon as possible. However, if it is almost time for the next scheduled dose, official guidance indicates that the missed dose is typically skipped entirely. Patients are cautioned not to use two doses at one time to make up for a missed dose.


Q: Are there any foods or vitamins I should avoid while taking Cefotaxime?

Regulatory documents primarily focus on interactions with other medicines, such as Probenecid and Aminoglycosides. Unless specifically advised otherwise by a healthcare professional, a normal diet may be continued. Official drug labels do not typically specify restrictions for common foods or vitamin supplements.


Q: What are the most serious long-term side effects to watch out for?

Official warnings and precautions note that prolonged use, generally considered more than 10 days, has been associated with certain adverse events. These can include disturbances in blood cell counts, such as a drop in the number of certain white cells (granulocytopenia). Longer courses may also increase the risk of a new infection (superinfection) caused by organisms that are not susceptible to the medicine.

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How should Цефотаксим be stored and disposed of?

Storage and Disposal of Cefotaxime

Cefotaxime vials (dry powder) must be stored at Controlled Room Temperature (20°C to 25°C) and kept in the original outer carton to protect from light. The medicine must be stored out of the sight and reach of children.

Stability and Handling

Reconstituted solutions should be used immediately. If temporary storage is necessary, the solution is typically stable for up to 24 hours when refrigerated (2°C to 8°C). Frozen solutions must not be refrozen after thawing, and accelerated thawing methods are prohibited by regulatory labeling.

Disposal Requirements

The vial is for single use; any unused portion must be discarded. Disposal of the container and any remaining product must be performed in accordance with local pharmaceutical waste regulations, not via household waste or wastewater.

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

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