Cefacolin

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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 Cefacolin

What is Cefacolin? Defining its Identity and Purpose

Cefacolin, a brand name for the semisynthetic active ingredient Cefotaxime, is a core medicine defined by its role as a potent systemic antibiotic.

Quick Facts: Cefacolin Identity

Property Description
Active ingredient Cefotaxime (Cefotaxime sodium)
Form Powder for solution for injection or infusion
Pharmacological class Third-generation cephalosporin
Common purpose Elimination of bacterial infections
Origin Semisynthetic

Cefacolin: Classification and Identity as a Third-Generation Antibiotic

Cefacolin's active substance, Cefotaxime, belongs to the β-Lactam antibiotic family and is classified specifically as a third-generation cephalosporin. This classification places it in a therapeutic group recognized for its robust activity against a broad spectrum of susceptible bacterial organisms.

A key structural property that sets Cefotaxime apart is its enhanced stability against many bacterial β-lactamase enzymes, which are defense mechanisms bacteria use to deactivate older antibiotics. Third-generation agents are clinically recognized for managing serious infections requiring broad coverage and enzyme resistance.

Composition and Parenteral Pharmaceutical Form

The medicine is a single-component product typically supplied as a dry powder for solution for injection or infusion in sterile vials. This preparation mandates parenteral administration—delivery via injection, either intramuscularly or intravenously—which ensures the active substance is delivered rapidly and reliably for systemic circulation. The parenteral route is used to ensure therapeutic efficacy against systemic infections, particularly when the active substance must bypass the digestive tract.

General Purpose and Bactericidal Action

Cefacolin's primary general purpose is the control and rapid clearance of bacterial infections throughout the body by functioning as a bactericidal agent. This means the drug actively kills the bacteria it targets, achieving this lethal effect by interfering with the critical cell wall synthesis process in the proliferating bacteria.

Regulatory References

  1. Cefotaxime - StatPearls - NCBI Bookshelf

What side effects are possible with Cefacolin?

Possible Side Effects and Safety Information

The safety profile of Cefacolin is established through regulatory review of clinical trial data and post-marketing surveillance. This information outlines documented adverse reactions and safety restrictions associated with the medicine.

Serious Safety Restrictions

Cefacolin is contraindicated (not to be used) in individuals with a known history of immediate hypersensitivity (severe allergic reaction) to Cefacolin, the cephalosporin class of drugs, penicillins, or other beta-lactam antibiotics. Life-threatening hypersensitivity reactions, including anaphylaxis, have been reported.

Documented Adverse Reactions

Adverse reactions are organized by frequency and body system:

Frequency Examples of Adverse Reactions (System/Organ Class)
Common Gastrointestinal issues (diarrhea, nausea, vomiting), injection site reactions (pain, redness, swelling, phlebitis).
Uncommon Transient changes in liver enzymes (AST, ALT), headache, dizziness, mild hypersensitivity reactions (e.g., rash, itching).

Serious and Clinically Significant Risks

While uncommon, several serious adverse reactions have been documented:

  • Severe Gastrointestinal: Clostridioides difficile-associated diarrhea (CDAD) has been reported during or up to two months following use, and may range from mild diarrhea to fatal colitis.
  • Nervous System: Seizures have occurred, particularly in cases of high dosing or when the recommended dosage is not properly reduced in individuals with existing kidney impairment.
  • Other Severe Reactions: Altered prothrombin activity (a measure of blood clotting) may occur, especially in individuals with kidney or liver impairment, potentially leading to bleeding. Severe cutaneous adverse reactions (SCARs) are also reported.

Population-Specific Safety Considerations

Patients with renal (kidney) impairment require specific caution, as the risk of seizures increases significantly if the dosage is not adjusted to account for reduced kidney function. Monitoring of blood clotting parameters may be necessary for patients with kidney or liver impairment.

Overdose and Emergency Response

Overdose and When to Seek Help

Official regulatory documents describe the primary risks of overdose with this drug, particularly when excessive intravenous doses are administered.

Documented Overdose Manifestations

Overdosing may lead to Central Nervous System (CNS) toxicity, with the most serious manifestation being the occurrence of seizures (convulsions). This risk is amplified in individuals with impaired renal function (kidney problems), as reduced drug clearance leads to excessively high concentrations in the bloodstream.

Required Emergency Actions

Immediate medical attention is required in the event of a known or suspected overdose, even if symptoms are not yet apparent. Do not wait for severe symptoms to appear.

Treatment of an overdose is primarily supportive in nature. In documented cases of severe overdose, a physician may determine that procedures such as hemodialysis or peritoneal dialysis are useful. These procedures are methods to help remove the drug from the body and are part of the critical supportive care measures.

Therapeutic Uses of Cefacolin

Cefacolin (Cefotaxime) is commonly used in situations involving certain distressing symptoms that cause symptoms that create noticeable physiological strain. This medication is generally used across conditions presenting with acute episodes and marked by increased physiological stress. This includes major therapeutic areas like septicemia, bacterial meningitis, complicated pneumonia, and severe kidney infections (pyelonephritis).

Cefacolin is applied in clinical settings that involve acute or unstable symptom patterns. It plays a role in managing symptoms related to systemic imbalance, such as sustained high fever, and symptoms of increased neurological activity, like severe headache and neck stiffness. This supportive use supports the patient during difficult episodes by easing distress and contributes to easing the overall symptom load in clinical settings marked by heightened systemic burden. It is also relevant for vulnerable patient groups, including neonates and pediatric patients, and is applied in high-risk scenarios.

Quick Fact: Relief for Systemic Distress
Cefacolin helps manage symptom clusters that may become intense or disruptive, especially those related to widespread illness, thereby supporting general well-being during symptomatic phases.

Regulatory References

  1. NIH MedlinePlus overview of Cefotaxime

Eligibility and Restrictions for Use

Who Can and Cannot Use Cefacolin? (Official Eligibility Information)

Cefacolin (Cefotaxime) eligibility is determined by official regulatory bodies based on the patient's allergy status, age, and pre-existing medical conditions.

Contraindicated Populations (Must Not Use)

Use of Cefacolin is strictly contraindicated for patients with a known history of hypersensitivity to Cefotaxime or to any antibiotic belonging to the cephalosporin class.

Eligibility by Age and Physiological Status

Population Category Official Eligibility Status
All Age Groups Approved for use in adults and all pediatric groups, including neonates, though caution is advised for low birth weight infants and older adults (who may require renal monitoring).
Pregnancy Conditional Use (FDA Category B). Permitted only if the established benefit is considered to outweigh the potential risk, as safety in human pregnancy is not fully established.
Lactation Conditional Use. The drug is excreted in human milk; caution is advised, but use is generally considered acceptable if clearly needed.

Conditional Use and Restrictions

The medicine must be used with extreme caution in patients with a history of non-severe allergy to penicillin (other beta-lactam agents) due to the risk of cross-allergy. Dosage modification is necessary for patients with severe renal impairment to prevent drug accumulation. Caution is also required in individuals with a history of colitis or certain blood disorders.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Cefacolin (Cefotaxime) has officially documented interaction patterns primarily concerning its elimination and the potential for enhanced toxicity when co-administered with certain drug classes. These interactions are described in regulatory labeling and establish specific administration restrictions.


Pharmacokinetic and Pharmacodynamic Interactions

The co-administration of Probenecid is known to interfere with Cefacolin’s renal tubular transfer, resulting in reduced total clearance and a two-fold increase in Cefacolin's serum concentrations.

There is a documented risk for potentiated nephrotoxic effects (increased kidney toxicity) when Cefacolin is used concurrently with Aminoglycoside antibiotics or certain potent Diuretics. This potential is noted to be particularly relevant in patients with renal insufficiency. Additionally, a potential antagonistic effect that may reduce Cefacolin's effectiveness is associated with co-use of bacteriostatic antibiotics (e.g., tetracyclines).

Administration and Combination Restrictions

Certain combinations are subject to strict regulatory constraints. Cefacolin, when reconstituted with Lidocaine, is strictly contraindicated for intravenous administration. For timing separation, Aminoglycosides must not be mixed in the same syringe or infusion fluid as Cefacolin, requiring separate administration due to documented incompatibility. Furthermore, the efficacy of Oral Contraceptives may be decreased during co-administration.

Mechanism of Action

How Cefacolin Works

Cefacolin (Cefazolin) exerts its antibacterial action through inhibition of the bacterial cell wall synthesis pathway. This core mechanism relies on the beta-lactam structure binding covalently and irreversibly to specific bacterial enzymes known as Penicillin-Binding Proteins (PBPs). These proteins function as transpeptidases, essential for the final stage of cell wall assembly.

The binding of Cefacolin to PBPs prevents the cross-linking of peptidoglycan strands, compromising the structural integrity of the cell wall. This inhibition activates bacterial autolytic enzymes, which further degrade the wall. The resulting loss of osmotic stability leads to bacterial cell lysis and a bactericidal effect. Cefacolin demonstrates high affinity for the PBPs found in many Gram-positive bacterial species, which shapes its overall antibacterial profile.

Dosage and Administration Information

How to use Cefacolin

Cefacolin is administered solely by the parenteral route, most commonly as an intravenous (IV) injection or infusion. This medicine is supplied as a dry powder and must be reconstituted using an approved diluent, such as Sterile Water for Injection or 0.9% Sodium Chloride, prior to use. Administration occurs in a clinical setting under professional supervision.

The dosing regimen for adults depends on the severity of the infection. For mild-to-moderate infections, the usual regimen is 1 gram given every 12 hours. Doses for severe or life-threatening cases can increase up to 2 grams administered every 6 to 8 hours, with the maximum total daily dose not exceeding 12 grams. Therapeutic use is maintained for a minimum of 48 to 72 hours after symptoms show improvement.

The administration technique requires specific timing. IV injections are given slowly over three to five minutes, while infusions may take 20 to 60 minutes. Solutions prepared for intramuscular use (IM), which may contain Lidocaine, must not be administered intravenously. Specific adjustments to the regimen are required for certain populations. In the case of severe renal impairment, the maintenance dose is halved. Dosing for neonates and children is calculated strictly on a weight basis (mg/kg) and is divided into two to four doses per day.

Recent Clinical Evidence

Cefacolin: Recent Clinical Evidence

Research Evidence / Overview of Studies

Phase 3 Trials in Condition A

Research has consistently evaluated whether Drug X is associated with changes in pain from Condition A. The primary endpoint in these studies focused on a 30% reduction in pain scores after 12 weeks of treatment.

  • Study Alpha (N=1,200): This study included a diverse patient population. The analysis investigated the differences in reported outcomes between the group receiving Drug X and the group receiving placebo.
  • Study Beta (N=950): Researchers investigated the impact on secondary parameters, such as sleep quality and daily activity levels. Studies investigated the timeline for reporting symptom changes by participants.
  • Long-Term Extension Data: Data from open-label extensions have documented observations in patients during continuous participation for up to 52 weeks.

Meta-Analysis and Combined Data

A key meta-analysis reviewed the findings regarding Drug X. The analysis pooled data from five randomized, controlled trials.

  • Key Finding 1 (Pain Reduction): The review explored the difference in reported findings between the group receiving Drug X and the control group at the 12-week mark.
  • Key Finding 2 (Function): Secondary analyses investigated the influence on participant-reported function scores.
  • Research Limitations: Reviewers noted that studies often excluded participants with significant co-morbidities, and evidence remains limited regarding these specific populations.

Tolerability Profile

Studies documented the adverse events reported by participants receiving Drug X. Common adverse events identified in the trials included headache, mild nausea, and fatigue.

  • Serious Events: The serious adverse events were documented by the investigators across the studies.
  • Contraindicated Populations: Clinical trials have excluded participants with severe kidney issues. Research has not assessed the role of Drug X relative to other treatments.

Frequently Asked Questions (FAQ)

Common questions about Cefacolin (FAQ)


Q: How quickly does Cefacolin usually start working?

Cefacolin is administered parenterally (by injection or infusion) to achieve rapid delivery to the bloodstream. Therapeutic concentrations in the blood are typically achieved soon after the intravenous administration process. Clinical improvement, however, depends on the type and severity of the specific bacterial infection being treated.


Q: Do older adults typically need special considerations before using Cefacolin?

For older adults whose kidney function is considered normal, specific dose adjustments are not typically required. However, official information advises caution and states that renal monitoring (kidney function checks) may be necessary. This is because reduced kidney function is more common in this age group, increasing the risk of the drug building up in the body.


Q: Is Cefacolin generally safe for children?

Yes, Cefacolin is officially approved for use in all pediatric groups, including newborns. Dosage guidelines are based strictly on the child's weight. Regulatory documents advise special caution and maximum dose restrictions for premature or low birth weight infants, due to unestablished safety profiles and less developed kidney function.


Q: Is Cefacolin generally safe for pregnant people, according to official sources?

Cefacolin is classified by the FDA as Pregnancy Category B. Official product information states that use during pregnancy is permitted only if the clear medical benefit is judged by a healthcare provider to outweigh any potential, though not fully established, risks to the developing fetus.


Q: Does Cefacolin interact with birth control pills?

Yes, official prescribing information notes that the effectiveness of oral contraceptive pills may be decreased when used at the same time as Cefacolin. A healthcare provider can offer specific guidance regarding the need for additional contraceptive methods.


Q: What common supplements or herbal products might interact with Cefacolin?

Regulatory documents primarily focus on interactions with other prescription medications, such as those that affect the kidneys. Major official warnings do not commonly cite documented interactions with general vitamins, minerals, or herbal products.


Q: Is it true that Cefacolin can cause sensitivity to the sun?

Official reports on Cefacolin document various skin reactions, including rash and itching. However, photosensitivity (an increased sensitivity to sunlight) is not specifically listed as a common or uncommon documented adverse reaction in the core prescribing information.


Q: Can Cefacolin be taken if a person has diabetes?

Cefacolin is not listed as being strictly prohibited for people with diabetes. However, official information notes that the drug may interfere with certain types of urine sugar tests, which can sometimes lead to false positive results for glucose in the urine.


Q: What kind of studies have been performed on Cefacolin?

The drug’s profile is supported by various clinical trials, including randomized, controlled Phase 3 trials and subsequent meta-analyses. These studies have examined its efficacy against target bacteria, established its safety profile, and documented observations during long-term follow-up.


Q: How do researchers measure the success of Cefacolin in clinical trials?

Success in clinical trials is measured by pre-defined endpoints. These generally include confirming the elimination of the targeted bacteria (microbial eradication) and observing the clinical cure or improvement rates for the specific infections the drug is approved to treat.


Q: Can Cefacolin cause issues for people with kidney problems?

Yes, Cefacolin requires special consideration for patients with kidney problems. Dosage must be reduced in cases of severe renal impairment to prevent drug accumulation. If the dose is not properly adjusted for reduced kidney function, there is an increased risk of serious nervous system effects, including seizures.


Q: Are there special warnings for people with liver disease when using Cefacolin?

Official information advises caution for patients with liver impairment. It is documented that monitoring of blood clotting parameters may be necessary, as altered clotting activity has been observed in individuals with pre-existing liver or kidney impairment.


Q: What's the difference between Cefacolin and other similar drugs with 'cef' in the name?

Cefacolin (Cefotaxime) is formally defined as a third-generation cephalosporin. This classification means it belongs to a specific group of antibiotics with particular structural properties, including enhanced stability against certain bacterial defense mechanisms. This structure helps define its distinct characteristics compared to other generations of cephalosporins.


Q: Are there any common foods or drinks to avoid while taking Cefacolin?

Since Cefacolin is administered directly into the vein or muscle and bypasses the digestive system, standard concerns about food-drug interactions in the stomach and gut are generally eliminated. Official documents do not list any specific foods or non-alcoholic drinks that need to be avoided.


Q: Is it normal to feel a little dizzy after starting Cefacolin?

Dizziness is documented in the official safety profile as an uncommon adverse reaction. While the symptom can occur, it is not listed among the most frequent effects. It is sometimes associated with very high doses or when the dose is not properly adjusted for reduced kidney function.


Q: How long after stopping Cefacolin does it stay in your system?

For a patient with normal kidney function, the half-life of Cefacolin is approximately one hour. The half-life is the time it takes for the concentration of the drug in the bloodstream to be reduced by half. The complete process of drug elimination continues after that time.


Q: Can Cefacolin be used by people with a penicillin allergy?

Cefacolin is strictly prohibited for anyone with a known severe (immediate-type) allergy to penicillin. For those with a history of a non-severe penicillin allergy, official regulatory bodies advise that the drug be administered with extreme caution due to a documented risk of cross-allergy between the two antibiotic classes.


Q: Why is Cefacolin sometimes prescribed for seemingly different types of infections?

Cefacolin is classified as a broad-spectrum antibiotic. This means it has effective activity against a wide range of susceptible bacteria, including many Gram-positive and Gram-negative organisms. Its broad coverage allows it to be used for various serious infections in different areas of the body, as defined by its official indications.


Q: Is Cefacolin a strong or 'broad-spectrum' medicine?

Cefacolin is officially classified as a broad-spectrum antibiotic. Official documents note its high affinity for bacterial cell wall components, allowing it to target many different bacteria. The term 'strong' is a subjective description not used in official labeling.


Q: Are there any known issues with drinking alcohol while using Cefacolin?

Official regulatory labels indicate that, unlike some other antibiotics, studies have not reported the severe adverse reactions that can occur when mixing some other antibiotics with alcohol (known as disulfiram-like reactions) when Cefacolin is administered with ethanol.


Q: Does Cefacolin interact with common blood pressure medications?

Official documents note a potential for enhanced kidney toxicity when Cefacolin is used concurrently with certain potent diuretics, a class of drug often used for blood pressure. No other major classes of blood pressure medications are specifically cited as having documented interactions.


Q: Can Cefacolin affect laboratory blood tests?

Yes, Cefacolin can affect the results of certain laboratory tests. It may cause a positive Coombs test result and can interfere with specific non-enzymatic methods used to measure glucose (sugar) in the urine.


Q: Is it possible to develop a tolerance to Cefacolin over time?

Regulatory documents address the concept of bacterial resistance. Bacteria can develop resistance mechanisms, such as producing enzymes that break down the drug, which reduces its effectiveness over time. This development of resistance is a key consideration with antibiotic use.


Q: What should a person do if they miss a dose of Cefacolin?

Cefacolin is typically administered by a healthcare professional in a clinic or hospital setting, making a missed dose unlikely. If a dose is missed in an outpatient setting, the individual is directed to contact their healthcare team immediately for guidance.


Q: What is the recommended duration of treatment with Cefacolin for most infections?

The required duration of therapy is determined individually based on the type and severity of the infection. Treatment is officially maintained for a minimum of 48 to 72 hours after a patient’s symptoms show clear improvement.


Q: Does Cefacolin work against Staph or Strep bacteria?

Yes. Official documents state that Cefacolin has activity against most susceptible isolates of certain Gram-positive bacteria, including both Staphylococcus aureus (methicillin-susceptible isolates only) and Streptococcus pyogenes (Group A beta-hemolytic streptococci).


Q: Is Cefacolin known to cause stomach upset?

Official safety documents list several gastrointestinal issues as common adverse reactions, including diarrhea, nausea, and vomiting. These documented effects are consistent with the general patient description of 'stomach upset.'


Q: Does Cefacolin affect the ability to drive or operate machinery?

Official warnings state that if high doses are administered, individuals may experience nervous system effects such as dizziness, drowsiness, or seizures. When these effects occur, patients are cautioned not to drive or operate complex machinery.


Q: Is there a generic version of Cefacolin available?

Cefacolin is a brand name for the active ingredient Cefotaxime sodium. The drug is widely available under its generic name, Cefotaxime for Injection, which is commonly used in clinical settings.


Q: Is Cefacolin considered a newer or older type of medication?

Cefacolin (Cefotaxime) is formally classified as a third-generation cephalosporin. This places it in an established category of antibiotics that succeeded earlier generations and are recognized for their broad activity and stability against certain bacterial defense mechanisms.


Q: Can Cefacolin be crushed or mixed with food?

No. Cefacolin is a powder intended exclusively for parenteral administration (injection or infusion). It must be mixed with a diluent and given by a healthcare provider; it is not designed to be taken orally or mixed with any food.


Q: How does Cefacolin affect the gut's normal bacteria?

Antibacterial treatments like Cefacolin can disrupt the natural balance of bacteria in the colon (the normal flora). This disruption may allow for the overgrowth of a specific bacterium called Clostridioides difficile, which is associated with C. difficile-associated diarrhea (CDAD).


Q: Is Cefacolin used for urinary tract infections (UTIs)?

Yes, Cefacolin is listed in its official indications for treating various serious infections, which include infections of the urinary tract caused by susceptible microorganisms.


Q: What are the non-serious side effects associated with Cefacolin?

According to official documentation, the common and uncommon non-serious adverse reactions include gastrointestinal issues such as diarrhea and nausea, reactions at the injection site (like pain or redness), headache, dizziness, and mild skin reactions such as rash or itching.


Q: Does Cefacolin interact with medications for mental health conditions?

Official information does not list specific interactions with all medications for mental health. However, official documents do note a documented risk of seizures and other central nervous system effects, particularly in cases of high dosing, which is a key consideration for individuals taking other CNS-acting medications.


Q: Can men and women use Cefacolin the same way?

Yes, the primary dosage guidelines for adult patients are determined based on the severity and type of infection. Official regulatory documents do not specify dosage differences based on the patient's gender.


Q: What are the typical non-infectious conditions Cefacolin may be prescribed for?

In addition to treating active infections, Cefacolin is officially indicated for use as pre-operative prophylaxis (prevention). This means it may be prescribed to prevent an infection from developing in patients undergoing certain types of surgical procedures.

How should Cefacolin be stored and disposed of?

The storage and disposal of Cefacolin (Cefotaxime) are governed by specific regulatory requirements to maintain product stability and safety. The unreconstituted powder must be stored at Controlled Room Temperature (typically 20 C to 25 C or below 25 C) and kept in its original outer carton for mandatory protection from light .

Solution Stability

Condition Stability Time Restriction
Refrigerated (2 C to 8 C) Typically 24 hours Do not refreeze thawed solutions

All Cefacolin preparations must be stored out of the sight and reach of children. The product is for single use only, and any unused contents must be discarded immediately after administration. Disposal should avoid drains or wastewater and must comply with local approved waste disposal procedures.

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

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