Biocef (cefaclor)

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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 Biocef (cefaclor)

Property Description
Active Ingredient Cefaclor
Form Capsules, Tablets, Oral Suspension
Pharmacological Class Second-generation cephalosporin antibiotic
Common Use Treating bacterial infections (general)
Origin Semi-synthetic compound

What Type of Antibiotic is Cefaclor?

Cefaclor, the active ingredient in Biocef, is a prescription-only medication classified as a semi-synthetic beta-Lactam antibiotic. It belongs specifically to the second-generation cephalosporin group, which is structurally derived from cephalosporanic acid. This classification places Cefaclor within a broad class of powerful agents designed to fight bacterial infections throughout the body. The semi-synthetic nature, achieved through specific chemical modification of the core structure, means the compound is tailored to enhance its stability and effectiveness, giving it a characteristic broad-spectrum activity against various pathogenic bacteria. Cefaclor is categorized as a second-generation cephalosporin, a classification clinically recognized for its improved resistance to certain bacterial enzymes compared to first-generation types.


The Core Function and Purpose of Cefaclor

The primary purpose of Cefaclor is to serve as a bactericidal agent, meaning its function is to actively kill susceptible bacteria responsible for causing an infection. Cefaclor achieves this by targeting and disrupting the integrity of the bacterial cell wall synthesis. This targeted action prevents the bacteria from completing their protective outer layer, leading to their destruction. This mechanism is central to its therapeutic action; Cefaclor works by inhibiting the synthesis of the bacterial cell wall. This inhibition process provides the overall general therapeutic benefit of eliminating the microbial cause of an underlying bacterial infection, a typical use scenario being the clearance of common respiratory tract infections.


Cefaclor: Available Forms and Composition

Cefaclor is available for oral administration in several established pharmaceutical preparations, including capsules, compressed tablets, and as a powder designed to be mixed into an oral suspension. The availability of the oral suspension is a differentiating factor, as it allows for easier administration in specific patient groups, such as children, who may have difficulty swallowing tablets. The composition is a single-entity product, meaning it contains only the active ingredient, Cefaclor (often as Cefaclor monohydrate), along with various necessary pharmaceutical excipients like binding agents, diluents, and flavoring components (for the liquid suspension). The availability of multiple dosage forms ensures flexibility in delivery, allowing the compound to be reliably absorbed from the gastrointestinal tract.

Regulatory References

  1. MedlinePlus Information about Cefaclor
  2. U.S. National Library of Medicine

What side effects are possible with Biocef (cefaclor)?

Possible Side Effects and Safety Information

This section describes the officially documented adverse reactions and safety characteristics of Cefaclor, as categorized by regulatory authorities.


Adverse Reaction Classifications

Adverse reactions are formally grouped by the system-organ class they affect. Gastrointestinal Disorders (diarrhea, nausea, vomiting) and Skin and Subcutaneous Tissue Disorders (rash, pruritus, urticaria) are commonly documented. Other systems involved include Blood and the Lymphatic System (e.g., eosinophilia) and the Nervous System (e.g., headache).

Frequency Classification Documented Reactions (Examples)
Common (1% to 10%) Diarrhea, headache, nausea, eosinophilia, vaginitis.
Rare (up to 0.1%) Pseudomembranous colitis, thrombocytopenia, reversible interstitial nephritis.

Serious Adverse Reactions and Safety Constraints

Regulatory documents highlight the potential for serious adverse reactions, including life-threatening severe hypersensitivity reactions (e.g., anaphylaxis, Stevens-Johnson syndrome) and severe gastrointestinal conditions like pseudomembranous colitis. The possibility of neurotoxicity, such as seizures or encephalopathy, is a safety consideration, particularly for individuals with renal impairment, where caution is required.

Safety constraints include the contraindication for individuals with a known allergy to cephalosporins, and caution is mandated for those with a history of penicillin allergy due to documented cross-hypersensitivity. Time-related patterns are also noted: serum sickness-like reactions typically occur during or following a second course of therapy, and prolonged use may result in the overgrowth of non-susceptible organisms (superinfection).

Overdose and Emergency Response

Overdose and When to Seek Help

Overdose with cefaclor is primarily characterized by gastrointestinal manifestations, including nausea, vomiting, epigastric distress, and diarrhea. Regulatory information notes that the severity of these symptoms is often dose-related.


Severe Manifestations and Urgent Action

The principal severe risk associated with excessive exposure to cefaclor, a second-generation cephalosporin, involves neurological sequelae. These outcomes may include seizures, convulsions, and encephalopathy, particularly when high doses are administered to individuals with impaired renal function. This population is explicitly noted as being at increased risk.

In any suspected overdose situation, immediate medical attention must be sought. Emergency response, as documented in regulatory guidelines, mandates the support of the patient's airway, ventilation, and perfusion. Meticulous monitoring of vital signs, blood gases, and serum electrolytes is required.


Management and Monitoring

Treatment is symptomatic and supportive, as no specific antidote is known for cefaclor overdose. Decontamination procedures, such as administering activated charcoal to decrease absorption, may be considered. Gastric lavage is required for ingestions exceeding five times the normal total daily dose. Elimination methods like hemodialysis are not established as beneficial in official documents.

Therapeutic Uses of Biocef (cefaclor)

What Biocef (Cefaclor) Treats: Main Uses and Benefits

Cefaclor is an antibiotic generally used for managing bacterial infections. Its therapeutic use is relevant in clinical settings marked by increased discomfort, which may assist with easing the overall symptom load during acute episodes.

It is commonly used across conditions presenting with acute episodes, including infections of the upper/lower respiratory tract (such as pneumonia and tonsillitis), middle ear infections, urinary tract infections (UTIs), and skin/soft tissue infections.

This medication is relevant for easing symptom clusters like pronounced fever, sore throat, and localized pain. When applied appropriately in clinical settings that involve acute symptom patterns, it supports patients during difficult episodes by easing distress and may assist with maintaining functional stability.


Quick Fact: Focus on Localized Discomfort

Cefaclor may be applied in addressing conditions marked by localized, distracting symptoms like pronounced ear pain or tenderness associated with skin infections. It is relevant when supportive symptom management is appropriate in these specific domains.

Regulatory References

  1. NIH MedlinePlus Drug Information

Eligibility and Restrictions for Use

Eligibility Map: Who Can and Cannot Use Biocef (Cefaclor) — Official Regulatory Information

Populations for whom use is contraindicated:

  • Patients with Known Allergy to Cephalosporins: Cefaclor is formally contraindicated in individuals with a documented history of hypersensitivity to the cephalosporin class of antibiotics.

Age-Related Eligibility Rules

Age Group Eligibility Status (Regulatory Wording)
Infants < 1 month Safety and effectiveness have not been established for use.
Pediatric ge 1 month Use is established for immediate-release forms (capsules/suspension).
Adolescents < 16 years Safety and effectiveness for extended-release tablets have not been established.
Older Adults (Geriatric) The normal adult dose is generally appropriate; caution is advised, especially in the presence of reduced renal function.

Condition-Specific Eligibility and Caution Rules

  • History of Penicillin Allergy: Use requires caution due to the documented potential for cross-hypersensitivity with beta-Lactam antibiotics.
  • Markedly Impaired Renal Function: Administration requires caution and careful clinical observation; dosage adjustments are typically not required as the half-life is only slightly prolonged.
  • History of Colitis/GI Disease: The medicine should be prescribed with caution in individuals with a history of gastrointestinal disease, particularly colitis.

Pregnancy and Lactation Eligibility Status

  • Pregnancy Status: Classified as FDA Pregnancy Category B; use is permitted only if clearly needed due to the lack of adequate human studies.
  • Lactation Status: Small amounts are detected in mother's milk; caution should be exercised when administered to a nursing woman.

Connection to the overall eligibility profile

Official regulatory documents define the Cefaclor eligibility profile primarily through an absolute contraindication for cephalosporin allergy. Eligibility is further structured by age, where safety is not established below one month, and by specific pre-existing conditions (e.g., renal impairment, colitis) that mandate caution during administration to ensure patient monitoring.

What should I know about interactions with other medicines?

Interaction Map: Interactions with other medicines and products — official regulatory information for Biocef (cefaclor)

Interaction Scope

  • Medicinal product categories with documented interactions: Products affecting renal clearance (Probenecid), oral anticoagulants (Warfarin), antacids (aluminum/magnesium), certain bacteriostatic antibacterials, and nephrotoxic drugs.
  • Specific interacting medicines (if explicitly listed): Probenecid, Warfarin, Chloramphenicol, and Aminoglycosides are explicitly noted in regulatory documents regarding interaction risk.
  • Mechanistic basis of interactions (only if stated in label): Interactions involve the inhibition of renal tubular secretion (pharmacokinetic effect of Probenecid) and diminished absorption due to binding in the gut (pharmacokinetic effect of antacids). Pharmacodynamic synergy is noted as an increased risk of nephrotoxicity with certain co-administered agents.
  • Timing-based interaction rules (if applicable): Antacids containing aluminum or magnesium must be taken at least one hour apart from Cefaclor extended-release tablets to avoid a documented reduction in absorption.
  • Population-specific interaction notes (if applicable): No specific interaction notes are documented to be heightened in a defined population, but caution is generally advised in the presence of markedly impaired renal function.
  • Interaction-related restrictions: Officially noted risk of prolonged prothrombin time with oral anticoagulants.

Interaction Classifications (High-Level)

  • Interaction severity classification (as defined in official documents): No drug combination is classified as absolutely Contraindicated solely due to interaction risk. Interactions are generally classified as warranting caution or monitoring.
  • Regulatory basis (EMA / FDA / etc.): Information is consistent with prescribing guidance published by official government regulatory bodies.
  • Interaction-context constraints (as defined in official documents): Food intake with Cefaclor capsules or suspension is documented to reduce the rate of absorption, but the total extent of absorption remains unchanged.

Resulting Interaction Structure

Official Interaction Statements:

  • Co-administration of Probenecid results in increased and prolonged serum concentrations of Cefaclor by inhibiting its renal excretion.
  • Concomitant use with oral anticoagulants (e.g., Warfarin) is officially associated with an increased risk of prolonged prothrombin time.
  • Administration of aluminum- or magnesium-containing antacids causes a reduction of Cefaclor absorption, which requires mandated separation in administration time.
  • Co-administration with other nephrotoxic drugs is documented to increase the official risk or severity of nephrotoxicity.

Connection to the overall interaction profile (2–4 sentences):

Regulatory documents define Cefaclor's interaction structure based on both pharmacokinetic changes affecting elimination and absorption, and pharmacodynamic synergy involving organ toxicity or efficacy reduction. These official statements outline the specific regulatory constraints, emphasizing the need for administration timing separation with certain substances and monitoring for altered drug levels or toxicity risk.

Mechanism of Action

Irreversible Blockade of Cell Wall Construction

Biocef (cefaclor) exerts a bactericidal effect by directly targeting the structural integrity of susceptible bacterial cells. Its action centers on the irreversible inactivation of Penicillin-Binding Proteins (PBPs), which are bacterial enzymes essential for the final cross-linking of the peptidoglycan layer. This molecular blockade of the cell wall construction pathway is the primary mechanism that initiates the destruction of the pathogen.


Cascade of Osmotic Failure and Cell Lysis

The permanent inhibition of PBPs triggers a destructive cascade: the newly forming cell wall becomes structurally defective and weak. This leads to an immediate loss of the cell's osmotic stability, causing the internal pressure to overwhelm the fragile outer structure. The resulting physiological event is cell lysis (rupture), which systematically kills the pathogen population, leading to microbial clearance. The destruction of the viable pathogen population is the defined cellular consequence of the drug's mechanism.


Constraints by Bacterial Resistance Mechanisms

The mechanism's effectiveness is constrained by bacterial counter-mechanisms, predominantly the production of beta-lactamase enzymes. These enzymes chemically destroy Cefaclor's active beta-lactam ring, preventing the drug from reaching and binding its PBP targets. This enzymatic hydrolysis is the principal way the drug's mechanism is overridden, allowing the bacterial cell wall synthesis pathway to continue unimpeded, resulting in a failure to produce the bactericidal effect, allowing the bacteria to proliferate.

Dosage and Administration Information

How to Use Biocef (Cefaclor)

Cefaclor is a cephalosporin antibiotic available for oral administration in various forms, including capsules, powder for oral suspension, and extended-release (ER) tablets. The established usage protocol governs its route, dosing, frequency, and duration.


Dosing and Frequency

The standard adult dosage for immediate-release forms is 250 mg administered every 8 hours. For more severe infections, this dose may be doubled to 500 mg every 8 hours. Pediatric patients typically receive 20 mg/kg/day in divided doses every 8 hours, with up to 40 mg/kg/day recommended for more serious infections, not exceeding 1 g daily. Dosage adjustment is usually not required for patients with moderate or severe renal impairment.


Administration Conditions and Duration

The immediate-release capsules and suspension may be administered with or without food. In contrast, the extended-release tablets must be taken with a meal or within one hour of eating, as this condition is necessary for proper absorption. A critical instruction for the ER tablets is that they must be swallowed whole and not cut, crushed, or chewed. Therapy must continue for at least 48 to 72 hours after the patient becomes asymptomatic. For infections caused by Streptococcus pyogenes, administration is required for a minimum of 10 consecutive days.

Recent Clinical Evidence

Biocef (cefaclor): Research Evidence Overview

Biocef is a brand name for the antibiotic cefaclor, a second-generation cephalosporin. Research into cefaclor primarily focuses on its clinical efficacy in treating common bacterial infections and its established safety profile.


Clinical Efficacy and Study Types

Studies involving cefaclor are typically Randomized Controlled Trials (RCTs) and meta-analyses. These investigations have established its role in treating infections such as otitis media (middle ear infection), pharyngitis (throat infection), and lower respiratory tract infections.

Key areas of research include:

  • Otitis Media: Multiple comparative trials have assessed cefaclor against other common antibiotics. Findings generally indicate that cefaclor produces comparable clinical cure rates to standard first-line therapies in children, with specific differences noted in resistance patterns depending on the geographic area.
  • Respiratory Infections: Studies have evaluated cefaclor's effectiveness against susceptible strains of bacteria that cause acute bronchitis and community-acquired pneumonia. The data support its use when organisms are sensitive to second-generation cephalosporins, particularly in less severe cases.

Safety and Adverse Event Monitoring

Post-market surveillance and clinical trial data indicate that cefaclor is generally well-tolerated. The most frequently reported adverse events are gastrointestinal disturbances, including diarrhea, nausea, and vomiting. Allergic reactions, typical of the cephalosporin class, are also documented and require immediate medical attention.

Research continues to monitor resistance patterns globally to ensure cefaclor remains an appropriate therapeutic choice against prevalent bacterial strains. The data collected helps inform clinical guidelines and prescribing practices worldwide.

Frequently Asked Questions (FAQ)

Common questions about Biocef (cefaclor) (FAQ)

Q: What is Biocef (cefaclor) used for?

A: Biocef (cefaclor) is an antibiotic medication that is typically prescribed to manage certain bacterial infections. These may include infections of the ear (otitis media), throat (pharyngitis), lungs (pneumonia), and skin and urinary tract infections, when caused by susceptible organisms.

Q: How should I take Biocef (cefaclor)?

A: The specific dosing instructions for Biocef (cefaclor) are determined by a healthcare provider based on the type and severity of the infection. It is important to follow the dose, timing, and duration of therapy as prescribed. If you have questions about how to administer the medication, please consult your pharmacist or prescriber.

Q: Can Biocef (cefaclor) be taken with food?

A: Some formulations of cefaclor may be taken with or without food. However, taking it with food may sometimes help reduce the possibility of stomach upset. Always refer to the specific guidance provided by your prescriber or the product label for the best way to take your prescribed formulation.

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

A: If a dose is missed, it should generally be taken as soon as you remember, unless it is close to the time for your next scheduled dose. If it is nearly time for the next dose, it is advisable to skip the missed dose and return to your regular schedule. Do not take two doses at the same time to make up for a missed dose. Consult your healthcare provider for specific advice regarding missed doses.

Q: Are there common side effects I should be aware of?

A: Like many medications, Biocef (cefaclor) may be associated with side effects. Common side effects may include diarrhea, nausea, vomiting, or skin rash. It is important to discuss the potential for side effects with a healthcare professional, especially if any are persistent or severe.

How should Biocef (cefaclor) be stored and disposed of?

How to Store and Dispose of Cefaclor (Biocef)

The official storage conditions for cefaclor differ based on the product form to ensure stability.


Storage Requirements

Formulation Temperature Requirement Stability/Protection Rule
Capsules/Tablets Controlled Room Temperature (20 C to 25 C) Protect from heat, moisture, and light; keep container tightly closed .
Oral Suspension (Mixed) Refrigerated (2 C to 8 C) Must be discarded after 14 days; do not freeze; keep container tightly closed .

Child Safety and Disposal

All forms of cefaclor must be kept out of the sight and reach of children. Unused or expired medication should not be flushed down the toilet or disposed of in the household trash. It must be discarded through a drug take-back program or according to local regulations.

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

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