Ofex

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Medically reviewed

Marina Burgos

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 Ofex

Property Description
Active Ingredient Cefixime
Pharmacological Class Third-generation Cephalosporin Antibiotic
Form Tablet, Capsule, Oral Suspension
Route of Administration Oral (Systemic)
Origin/Type Semisynthetic, Prescription-Only

1. Ofex: Identity, Classification, and Composition

Ofex is a prescription-only medicine used for systemic anti-infective therapy, containing the active ingredient Cefixime. This drug is classified as a semisynthetic beta-lactam compound and belongs pharmacologically to the third-generation cephalosporin antibiotic class. Cefixime is frequently administered as its trihydrate salt, constituting a single-ingredient product intended for oral use. The chemical structure of Cefixime is well-defined.

This structural classification is vital as it determines the drug's properties and role. Cefixime is an orally effective agent, making it a recognized choice for outpatient treatment of susceptible bacterial infections. Ofex is primarily positioned as a systemic therapy, offering a reliable alternative to injectable antibiotics for a variety of common, non-invasive bacterial illnesses.

2. What is a Third-Generation Cephalosporin Antibiotic?

Cefixime is a broad-spectrum, bactericidal agent, meaning it acts by directly destroying the harmful bacteria causing the infection. The fundamental mechanism involves disrupting the structural components bacteria rely on to build and maintain their cell walls, thereby ensuring eradication of the organisms.

Its designation as a third-generation agent indicates that it offers an enhanced spectrum of activity and chemical stability compared to earlier cephalosporins. Its utility is recognized in treating infections where the causative organism is known to be susceptible. This foundational characteristic defines the potential high-level benefit the medicine offers in overcoming bacterial diseases.

3. Available Forms and Administration Type

Ofex is prepared exclusively for oral administration and is available in forms such as film-coated tablets, capsules, and oral suspension. The medication is designed to be easily ingested, supporting practical patient management outside a hospital setting.

The availability of the oral suspension form ensures versatility, often allowing for more flexible and accurate dosing, especially for pediatric patients who have difficulty swallowing solid forms. The film-coated tablet form, another key feature, is designed to mask the taste of the active ingredient, enhancing patient acceptance. Regardless of the form, the function remains consistent: systemic delivery of the active substance, Cefixime, to achieve therapeutic concentrations throughout the body.

Regulatory References

  1. NIH Drug Information
  2. single-ingredient product

What side effects are possible with Ofex?

Possible Side Effects and Safety Information

The safety profile of Cefixime, the active ingredient in Ofex, is officially documented based on clinical trials and post-marketing surveillance data, classified according to System Organ Classes (SOCs) and frequency in regulatory labeling.

Documented Adverse Reactions

The most frequently reported adverse reactions are classified as common in official documents, primarily involving the gastrointestinal system. These include diarrhea (most frequently reported), nausea, loose stools, abdominal pain, and flatulence.

Less frequent adverse reactions are reported across various systems, including headache and dizziness (Nervous System) and vomiting (Gastrointestinal).

Serious Adverse Reactions and Safety Constraints

The official label highlights several rare but clinically critical reactions. These serious adverse reactions include severe cutaneous adverse reactions (SCARs) such as Stevens-Johnson syndrome (SJS), potentially fatal anaphylactic/anaphylactoid reactions, and Clostridioides difficile-associated diarrhea (CDAD). Seizures and encephalopathy have also been documented, particularly in the setting of renal impairment.

Adverse effects have been reported across key system organ classes, including transient elevations in liver enzymes (Hepatobiliary Disorders), changes in blood cell counts (Hemic and Lymphatic Disorders), and acute renal failure (Renal and Urinary Disorders).

Population-Specific Safety Considerations

Safety statements specify that patients with impaired renal function carry an increased risk of central nervous system effects if the drug clearance is compromised. Caution is also noted for patients with a known penicillin allergy due to the potential for cross-hypersensitivity. Furthermore, safety and efficacy have not been formally established in infants aged less than six months. The label also documents that concomitant use with anticoagulants, such as warfarin, can result in a safety risk due to a documented increase in prothrombin time.

Overdose and Emergency Response

Overdose and When to Seek Help

Official regulatory information describes the overdose profile for Ofex (Cefixime) as primarily concerning the potential for neurological toxicity.

Documented Overdose Presentations

Classification Official Regulatory Statement
Documented Manifestations Symptoms of encephalopathy including convulsions (seizures), confusion, impairment of consciousness, and movement disorders [Source 2.1, 3.4].
High-Risk Population Patients with renal impairment (impaired kidney function) are at a heightened risk for developing these severe neurological effects [Source 2.1, 3.4].

Required Emergency Actions

  • Seek immediate medical attention or call a poison control center immediately if an overdose is suspected [Source 1.1, 2.2].
  • Call emergency services (e.g., 911) if the person has collapsed, had a seizure, has trouble breathing, or cannot be awakened [Source 1.1].

Overdose Management Constraints

  • No specific antidote exists for Cefixime overdose [Source 3.1].
  • The drug is not removed in significant quantities by hemodialysis or peritoneal dialysis [Source 3.1].
  • Management consists of general supportive measures and symptomatic treatment, and gastric lavage may be indicated in certain cases [Source 3.1].

Therapeutic Uses of Ofex

What Ofex Treats: Main Uses and Benefits

The primary therapeutic role of Ofex (Cefixime) is used for managing infections caused by susceptible bacteria across several key body systems, which supports the patient during difficult episodes by easing distress. It is used to manage infections of the ears, throat, tonsils, urinary tract, and air passages leading to the lungs.

This medication is generally used to help address symptoms related to physical discomfort and inflammatory or irritative states associated with bacterial conditions, including otitis media, tonsillitis, acute bronchitis, uncomplicated urinary tract infections (UTIs), and certain severe enteric conditions like typhoid fever. This systemic support assists with maintaining functional stability during phases when symptoms become more noticeable.

“The systemic effect of this antibiotic is considered relevant for managing acute bacterial symptoms when they create noticeable physiological strain.”

The medication is commonly used in clinical settings that involve acute or disruptive symptom patterns caused by susceptible bacteria, relevant when supportive symptom management is appropriate. Its use contributes to easing the overall symptom load, helping patients cope with the distress of these acute episodes.


Quick Fact: Relief for Acute Infection Symptoms Ofex is used to manage symptoms that interfere with daily functioning, such as fever, localized pain, and inflammation, which are characteristic of bacterial respiratory and urinary tract infections. It is a key therapy used when short-term symptomatic assistance is needed.

Regulatory References

  1. NIH MedlinePlus Drug Information

Eligibility and Restrictions for Use

Who Can and Cannot Use Ofex?

Eligibility for using Ofex (Cefixime) is strictly defined by regulatory authorities based on a patient's age, physiological status, and allergy history.

Absolute Contraindications: Use of this medicine is prohibited for patients with a known hypersensitivity to Cefixime or any other antibiotic in the cephalosporin class. It is also contraindicated for those with a history of severe, immediate allergic reactions to penicillin or other beta-lactam drugs. Furthermore, the medicine is contraindicated in term and preterm newborn infants (0–27 days).

Age-Based Approval Status: Ofex is approved for adults and pediatric patients six months of age or older. Efficacy and safety have not been established in infants younger than six months. While older adults can typically use the same dosage as adults, regulatory caution advises that renal function be assessed prior to administration.

Conditional Use and Restrictions: Eligibility is conditional for patients with impaired renal function, often requiring a modification as defined by the prescribing information (e.g., if creatinine clearance is below 60 mL/min). Use is generally restricted for women who are pregnant or breastfeeding, permitted only when considered clearly needed by a physician due to lack of established data. Patients with phenylketonuria (PKU) are restricted from using the chewable tablet formulation.

What should I know about interactions with other medicines?

Interactions with Other Medicines and Products (Cefixime)

The official regulatory profile for Ofex (Cefixime) documents several specific interactions, primarily focusing on altered drug exposure and effects on the blood coagulation system. The primary regulatory documents do not list any combinations as strictly contraindicated (prohibited).


Documented Interactions

Interacting Substance Official Effect as Documented by Regulators
Warfarin and Anticoagulants Associated with a prolonged prothrombin time (increased INR), reflecting an effect on blood clotting.
Carbamazepine Co-administration has been reported to cause elevated Carbamazepine plasma levels (altered drug exposure).
Probenecid Increases Cefixime's peak serum concentration and AUC by reducing its renal clearance.
Salicylates May result in a 20-25% decrease in Cefixime's plasma concentrations (AUC and Cmax).
Live Vaccines Listed with serious interaction potential (e.g., BCG, Cholera, Typhoid vaccines).

Additional Official Considerations

The regulatory labeling notes that the risk of the coagulation effect is higher for individuals with renal impairment, hepatic impairment, or a poor nutritional state. Furthermore, Cefixime may cause false-positive results in specific urine diagnostic tests for glucose (using Benedict’s or Fehling’s solution) and ketones (using nitroprusside). Ofex may be administered with or without food, as food does not significantly alter the overall absorption.

Mechanism of Action

How Ofex Works

Ofex exerts its pharmacological effect by influencing specific molecular cascades and altering the activity within targeted biological systems. It achieves action primarily through two mechanistic domains: receptor interaction and pathway regulation.


Modulating Receptor-Mediated Signaling

Ofex acts within domains involving receptor- or enzyme-mediated signaling to influence early molecular steps that determine systemic physiological outcomes. This initiates or suppresses signaling sequences that ultimately lead to downstream cellular effects, attenuating the effect of excessive mediator activity.


Altering Pathway Activity

The drug engages mechanisms that influence overactive or dysregulated processes, particularly in systems where specific transmitters or mediators dominate. By modifying processes governed by distinct signaling patterns, Ofex influences regulatory mechanisms that govern physiological response magnitude within the targeted pathways. This pathway adjustment further engages mechanisms that influence feedback regulation, resulting in detectable alterations in physiological parameters that facilitate the establishment of a modulated cellular state.

Dosage and Administration Information

How to Use Ofex: Official Administration Guidelines

This section describes the usage of Ofex (Cefixime), focusing on the high-level principles of administration rather than on therapeutic claims or safety.


Administration Scope

Instruction Detail
Route of administration: Oral (Systemic) ingestion is the only approved administration route.
Dosing schedule: Adults/Adolescents (>45 kg or >12 years): The standard regimen is mathbf400 mg daily, administered either as a single dose or divided into mathbf200 mg every 12 hours. A single oral dose of mathbf400 mg is used for specific indications.
Timing in relation to meals: Capsules and tablets may be administered without regard to food (can be taken with or without meals).
Preparation requirements: The Oral Suspension requires reconstitution with a specified amount of water and must be shaken well before each use. Chewable Tablets must be chewed or crushed before swallowing.
Age/Renal rules: Pediatric Patients (6 months and older, le 45 kg): The dose is mathbf8 mg/kg/day of the oral suspension. Renal Impairment (Adults): For Creatinine Clearance le 20 mL/min, the dose should not exceed mathbf200 mg once daily.

Procedural Structure and Duration

Administration is structured as a daily or twice-daily oral regimen. Treatment courses are generally established for 7 to 14 days, though a minimum duration of 10 days is required for infections caused by Streptococcus pyogenes to reduce recurrence. The choice of dosage form is procedural: the tablet or capsule is not a direct substitute for the oral suspension in the context of otitis media, as the suspension achieves higher blood levels required for that specific usage context. This standardized framework defines the protocol for consistent administration.

Recent Clinical Evidence

Research evidence / Overview of studies for Ofex

The research record for Cefixime, the active ingredient in Ofex, is primarily based on formal clinical trials, including randomized controlled trials (RCTs) and systematic reviews, for use in specific bacterial infections. These studies examine how symptoms are measured and how outcomes related to systemic or functional imbalance evolve over defined time intervals.


Research Evidence for Uncomplicated Urinary Tract Infections (UTIs)

For acute uncomplicated UTIs, the research involves numerous Randomized Controlled Trials (RCTs). These studies were used in research exploring how symptoms change over time and monitored two key outcomes: clinical change (outcomes related to physical discomfort) and bacteriological change (whether the bacteria were detected in the urine post-treatment). Studies exploring short-term symptom changes reported measurements of clinical and bacteriological outcomes following treatment that reflected patterns observed in the studies using comparative treatments.


Research Evidence for Otitis Media (Middle Ear Infection)

Research concerning the use of Cefixime for otitis media was conducted through Randomized Controlled Trials (RCTs), primarily monitoring patient-reported outcomes in pediatric patients (children 6 months and older). Findings describe patterns observed in the studies regarding clinical response. However, studies exploring outcomes for infections caused by S. pneumoniae reported findings that varied from those observed with other treatments. A key limitation is that data characterizing recurrence rates or persistent effects are not fully established.


What the Research Record Still Leaves Uncertain

The scientific literature highlights several areas where certainty remains low or evidence is limited. Long-term effects are not fully established; as follow-up durations were limited, there is little information on the durability of the response. The need for ongoing surveillance is documented due to rising global antibiotic resistance, which may influence future study outcomes. Data for certain groups, such as older adults (65 years and above) and those with complex comorbidities, remain insufficient.

Key Studies & References Cefixime Monograph: Mechanisms, Clinical Use, and Safety Profile (NIH/NLM)

Frequently Asked Questions (FAQ)

Common questions about Ofex (FAQ)


Q: Is Ofex considered a broad-spectrum antibiotic?

Regulatory documents indicate that Ofex (Cefixime) is a broad-spectrum antibiotic. It belongs to the third-generation cephalosporin class and is active against most isolates of specific Gram-positive and Gram-negative bacteria.


Q: How long does Ofex stay in your system after you stop taking it?

According to the official product information, the time it takes for the body to reduce the drug concentration by half, known as the half-life, typically ranges from 2.4 to 4 hours in adults with typical kidney function. The drug is gradually removed from the body through both the kidneys and other systems.


Q: Are there any long-term side effects to be aware of when taking Ofex?

Official labeling documents all known adverse reactions based on clinical trials and post-marketing surveillance. However, regulatory information does not specifically define or address what constitutes a long-term or chronic side effect following treatment.


Q: Can taking Ofex cause trouble sleeping or insomnia?

Official adverse reaction lists for Cefixime do not explicitly include insomnia or trouble sleeping among the documented nervous system effects. The effects that are noted in the nervous system class include headache and dizziness.


Q: Why is there a warning about tendon problems with Ofex and similar drugs?

The specific serious warning about tendon problems (tendinopathy) is associated with the fluoroquinolone class of antibiotics. Ofex (Cefixime) belongs to the cephalosporin class, and this warning does not apply to it.


Q: Can Ofex cause a change in mood or anxiety levels?

Official documents list some nervous system effects, such as headache and dizziness. However, mood changes or anxiety are not explicitly listed in the common or less common adverse reactions documented for Cefixime.


Q: Is there recent research or new studies about the effectiveness of Ofex?

Regulatory documents state that antibiotic use should aim to preserve the drug's effectiveness. This highlights the need for continued monitoring of effectiveness, but the official labeling does not cite specific 'recent' or 'new' published studies.


Q: Is Ofex effective against antibiotic-resistant bacteria?

Ofex is indicated only for infections caused by bacteria that are classified as susceptible to Cefixime. The official product information indicates that the drug is not effective against all types of bacteria, and some known bacteria may be resistant.


Q: Is Ofex safe for use in elderly patients, and are there special precautions?

Older adults can generally use Cefixime, and clinical trials have not identified major differences in response compared to younger adults. However, it is noted that kidney function may need to be assessed, and dosage modification may be considered by a healthcare provider if impairment is present.


Q: Is Ofex still safe to take if I have pre-existing kidney problems?

Administration to patients with impaired kidney function is conditional. Official prescribing information indicates that dosage modification is typically required and managed by a healthcare professional to avoid potential drug accumulation in the body.


Q: Can Ofex still work if I feel better and stop taking it early?

Official regulatory information advises that the full course of treatment should be completed. Stopping treatment early, even if symptoms improve, is associated with the potential for treatment failure and may increase the risk of developing drug-resistant bacteria.


Q: Why is it important to complete the entire course of Ofex even if symptoms disappear?

Official information emphasizes that completing the full prescribed course of treatment is intended to achieve the best clinical outcome. This practice is also important to reduce the development of drug-resistant bacteria.


Q: Why do some people experience severe diarrhea even after they finish their course of Ofex?

Antibiotics, including Cefixime, can sometimes cause an infection called Clostridioides difficile-associated diarrhea (CDAD). This condition, known as CDAD, is a documented adverse event. The official labeling reports that this condition can occur even over two months after the antibiotic course has been completed.


Q: Does Ofex work against both Gram-positive and Gram-negative bacteria?

Yes, Cefixime is active against most isolates of specific bacteria that fall into both the Gram-positive and Gram-negative categories.


Q: What makes Ofex a 'DNA-gyrase inhibitor'?

Ofex (Cefixime) is not a DNA-gyrase inhibitor. Its antibacterial action is due to the inhibition of bacterial cell-wall synthesis. DNA-gyrase inhibition is the mechanism used by the fluoroquinolone class of antibiotics.

How should Ofex be stored and disposed of?

How to Store and Dispose of OFEX (Cefixime)

The official storage requirements for OFEX vary based on the specific formulation. All forms of the medication must be kept out of the sight and reach of children.

Storage Conditions

Formulation Required Storage Condition
Tablets/Capsules/Dry Powder Store at Controlled Room Temperature (20 C to 25 C). Keep in the original, tightly closed container and protect from excess moisture and heat.
Reconstituted Suspension Store at room temperature (15 C to 25 C) or refrigerated (2 C to 8 C). Do not freeze.

Stability and Disposal

Any unused portion of the liquid suspension must be discarded after 14 days of reconstitution. Unused or expired OFEX should be disposed of through a drug take-back program or by mixing it with an undesirable substance, such as dirt or used coffee grounds, before sealing it in a container for the household trash. This medicine is not suitable for disposal by flushing.

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

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