Suprax

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Suprax

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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 Suprax

Property Description
Active Ingredient Cefixime
Pharmacological Class Third-generation Cephalosporin Antibiotic
Origin Semisynthetic
Common Use (General) Treating susceptible bacterial infections
Available Forms Oral tablets, chewable tablets, oral suspension

What Type of Antibiotic is Suprax (Cefixime)?

Suprax is a prescription-only medication whose active component is the semisynthetic compound Cefixime. Cefixime is classified as a third-generation cephalosporin antibiotic within the broader beta-lactam family of antibacterial drugs. This advanced classification provides enhanced chemical stability against bacterial defense mechanisms, specifically the beta-lactamase enzymes. This stability allows Suprax to exhibit a broad-spectrum of activity against a diverse array of susceptible pathogens, making it a critical tool in targeted antibacterial therapy. Cefixime is recognized by numerous international guidelines for its reliable performance against a range of infections, often serving as an effective oral alternative for outpatient treatment.


Composition and Available Forms of Suprax

Suprax is a single-ingredient product formulated exclusively for the oral route of administration, with the therapeutic action stemming solely from the active compound Cefixime trihydrate. The availability of Suprax as both oral solid formulations, which include tablets and chewable tablets, and as an oral liquid formulation prepared from a powder for suspension, is a key differentiating feature. This range of available forms, including the flavored suspension, is specifically intended to suit diverse patient groups and administration needs, providing dosing flexibility, particularly for pediatric patients. The base of these forms consists of suitable solid excipients for tablets or an aqueous vehicle for the suspension.


What is the General Purpose of Suprax?

The general purpose of Suprax is to eliminate the pathogens responsible for bacterial infections by exerting a potent bactericidal effect. It achieves this by focusing on a critical bacterial function: the inhibition of bacterial cell wall synthesis, which is essential for the organism's structural integrity and survival. By preventing the construction of this protective outer layer, Cefixime directly causes the destruction of the susceptible bacteria. This targeted, destructive action against the bacterial cell wall provides the necessary therapeutic benefit for achieving clinical recovery from active bacterial infection in scenarios such as typical outpatient respiratory tract infections.

Regulatory References

  1. Cefixime: MedlinePlus Drug Information

What side effects are possible with Suprax?

Possible Side Effects and Safety Information

Suprax (cefixime) is a cephalosporin antibiotic that may cause side effects. It's important to be aware of the common and serious potential reactions.


Common Side Effects

The most frequently reported side effects of Suprax primarily involve the gastrointestinal system:

  • Diarrhea (reported in up to 16% of patients)
  • Nausea
  • Loose or frequent stools
  • Abdominal pain or upset stomach
  • Flatulence (gas)

Other common side effects can include headache and dizziness. Taking the medication with food may help to decrease stomach upset.


Serious Side Effects and Warnings

Seek immediate medical attention if you experience signs of a severe allergic reaction (anaphylaxis), such as hives, rash, swelling of the face, throat, or tongue, or difficulty breathing. Cross-sensitivity with penicillin allergy is possible, so notify your doctor of any prior allergic reactions to penicillin or other beta-lactam antibiotics.

Type of Serious Reaction Symptoms to Watch For
Severe Diarrhea Watery or bloody diarrhea, fever, and severe stomach cramps, which may be signs of Clostridium difficile-associated diarrhea (CDAD). Do not take anti-diarrhea medications without consulting your doctor.
Severe Skin Reactions Blistering, peeling, or loosening of the skin (including in the mouth, nose, eyes, or genitals), fever, or flu-like symptoms (e.g., Stevens-Johnson syndrome, Toxic Epidermal Necrolysis).
Liver/Kidney Problems Yellowing of the skin or eyes (jaundice), dark urine, pale stools, reduced urination, or unusual tiredness.
Coagulation Effects Unusual bleeding or bruising. Cefixime may affect blood clotting, especially in patients taking warfarin or other anticoagulants.

Suprax is contraindicated in patients with a known allergy to cefixime or any other cephalosporin antibiotic.

Overdose and Emergency Response

Overdose and When to Seek Help

Official regulatory documents define the overdose profile of Suprax (Cefixime) primarily by the risk of Central Nervous System (CNS) toxicity. Severe manifestations are particularly noted in patients with impaired renal function.

Documented Overdose Manifestations

Classification Detail Regulatory Description
Primary System Affected Central Nervous System (CNS)
Common Manifestations Risk of encephalopathy, including confusion, impairment of consciousness, movement disorders, and convulsions (seizures).
High-Risk Group Individuals with renal impairment are specifically noted to be at increased risk of severe CNS effects and seizures.

Required Emergency Actions

In the event of a suspected overdose, it is mandated to call the Poison Control Helpline immediately. Urgent medical assistance is required for specific severe symptoms:

  • Seek immediate emergency medical attention (call 911 or local emergency services) if the individual has collapsed, experienced a seizure, has trouble breathing, or cannot be awakened.

Overdose Management Notes

No specific antidote is known for Cefixime overdose; therefore, management is strictly supportive and symptomatic. The drug is not removed in significant quantities by hemodialysis or peritoneal dialysis. If seizures occur, the drug should be discontinued, and appropriate anticonvulsant therapy may be administered.

Therapeutic Uses of Suprax

What Suprax Treats: Main Uses and Benefits

Suprax is commonly used when symptoms are driven by an underlying bacterial infection and is relevant across domains where additional symptomatic support is needed. It is generally applied in addressing specific infections such as those in the ears (otitis media), throat (pharyngitis and tonsillitis), lungs (bronchitis), and the urinary tract.

The use of this medication may support patients during difficult episodes by easing distress and contributing to improved comfort. Suprax is used in areas where short-term symptom management is appropriate, assisting with maintaining functional stability during symptomatic phases. It is applicable within clinical settings marked by increased discomfort or tension from bacterial infections and provides support that helps ease the overall burden of symptoms, especially those that interfere with daily stability.


Quick Fact: Relief for Pain and Discomfort Suprax may contribute to easing discomfort during acute episodes and supports general well-being during symptomatic phases related to an infection, helping to address symptoms that create noticeable physiological strain.

Eligibility and Restrictions for Use

Suprax (Cefixime) eligibility is strictly defined by regulatory documents, outlining who may and may not use the medicine.

Contraindications and Absolute Exclusions

Suprax is contraindicated and must not be used by patients with a known hypersensitivity or severe allergic reaction to Cefixime, any other cephalosporin antibiotic, or a history of severe immediate allergic reactions to penicillin antibiotics.


Age-Related Eligibility

The medication is officially approved for use in adults and pediatric patients six months of age and older. Regulatory safety and efficacy have not been established in infants younger than six months, making them generally ineligible for standard use.


Conditional Use Restrictions

Population/Condition Regulatory Status (Conditional Use)
Impaired Renal Function (Adults) Use is permitted, but dose adjustment is required if creatinine clearance is less than 60 mL/min.
Pregnancy Should be used only if clearly needed; classified as Pregnancy Category B.
Lactation/Nursing Mothers Official labeling advises that consideration should be given to discontinuing nursing temporarily during treatment.
Phenylketonuria (PKU) Use is restricted for the chewable tablet formulation due to its phenylalanine content.

What should I know about interactions with other medicines?

Suprax (cefixime) has been associated with specific interactions when used concomitantly with certain medications and products. It is essential for patients to inform their healthcare providers of all current medications to manage these risks.

Drug-Drug Interactions

Interacting Product Category Specific Drug Examples Documented Interaction Result
Anticoagulants Warfarin and related products Increased prothrombin time (PT) and International Normalized Ratio (INR), with reported cases of clinical bleeding. This combination requires close monitoring of blood coagulation parameters.
Anticonvulsants Carbamazepine Elevated carbamazepine blood levels have been reported. Therapeutic drug monitoring may be necessary to detect alterations in carbamazepine concentrations and adjust dosing accordingly.

Drug-Laboratory Test Interactions

Cefixime can interfere with certain laboratory tests, leading to false results:

  • Urine Glucose Tests: A false-positive reaction for glucose in the urine may occur when using non-enzymatic tests like Clinitest®, Benedict's solution, or Fehling's solution. Glucose tests based on enzymatic glucose oxidase reactions (e.g., Clinistix® or TesTape®) are recommended alternatives.
  • Coombs Test: A false-positive direct Coombs test has been reported with other cephalosporins and may be a drug-related effect.
  • Ketones in Urine: A false-positive reaction for ketones in the urine can occur with tests using nitroprusside.

Mechanism of Action

Selective Inhibition of Bacterial Cell Wall Assembly

Suprax targets and disables the construction of the bacterial cell's exterior structure. The drug acts as a specific inhibitor by binding to and inactivating crucial bacterial enzymes called penicillin-binding proteins (PBPs). This action prevents the final cross-linking of the peptidoglycan layer, which is essential for cell rigidity.


The Mechanism Leading to Cell Lysis

The blockade of cell wall synthesis initiates a cascade where the bacterial structure fails to withstand internal osmotic pressure. This physiological instability leads to the structural collapse and lysis (rupture) of the bacterial cell. This mechanism results in the killing (a bactericidal effect) of susceptible bacterial populations.

Dosage and Administration Information

Official Administration Guidelines for Suprax (Cefixime)

Suprax (Cefixime) is strictly formulated for the oral route of administration as tablets, capsules, chewable tablets, or oral suspension. Proper use requires adherence to dosage and duration instructions.

Standard Dosing and Frequency

The standard recommended dose for adults and children weighing more than 45 kg (or over 12 years of age) is 400 mg daily. This dosage may be taken either as a single 400 mg dose or divided into 200 mg every 12 hours. For pediatric patients (6 months and older), the dose is typically calculated based on weight, at 8 mg/kg/day, which can be given once daily or divided into two doses of 4 mg/kg every 12 hours.

Administration Detail Official Requirement
Route Oral (Tablets, Capsules, Suspension, Chewable Tablets)
Adult Dose 400 mg once daily OR 200 mg every 12 hours
Pediatric Dose 8 mg/kg/day, once daily or divided every 12 hours
Food Relationship Tablets/capsules may be taken without regard to food; oral suspension is better absorbed with food

Procedural Use and Adjustments

For infections caused by Streptococcus pyogenes (such as pharyngitis or tonsillitis), the full therapeutic course must be administered for at least 10 days. In the event of a missed dose, it should be taken as soon as it is remembered, unless it is almost time for the next dose; doses should not be doubled.

Dose adjustment is required for adults with compromised kidney function. For those with a creatinine clearance (CrCl) of 20 mL/min or less, including patients on chronic ambulatory peritoneal dialysis or hemodialysis, the recommended dosage should not exceed 200 mg once daily.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Suprax (Cefixime)

Evidence for Use in Acute Respiratory and Ear Infections

Research has explored Suprax in the context of conditions such as middle ear infections (otitis media) and throat/tonsil infections (pharyngitis and tonsillitis). This research involves Randomized Controlled Trials (RCTs) and comparative clinical studies.

For otitis media, research evaluated outcomes such as changes in signs like fever and ear pain, and measurements of bacteriological eradication (clearance of target bacteria). Findings described the measurements of these outcomes in primarily pediatric populations. The data indicates that specific oral suspension formulations were used in research to evaluate the achievement of drug concentrations for this type of infection. For pharyngitis and tonsillitis, research focused on episodes where symptoms became more noticeable, tracking the measurement of bacteriological clearance of the specific bacteria, Streptococcus pyogenes.

Evidence for Use in Acute Bronchitis and Urinary Tract Infections (UTIs)

Controlled clinical trials examined Suprax for acute exacerbations of chronic bronchitis (AECB) in adults. Research focused on outcomes such as changes in cough and sputum production, and the measurement of bacteriological clearance. For uncomplicated urinary tract infections (UTIs), evidence was derived from RCTs and comparative studies. These studies monitored outcomes such as changes in clinical symptoms and the measurement of uropathogen clearance.

Research on Gonorrhea and Evolving Susceptibility Patterns

Suprax was evaluated in single-dose trials for uncomplicated gonorrhea, where the primary focus was on confirming bacteriological cure via follow-up testing. Official regulatory and public health surveillance reports have described patterns related to the susceptibility of the causative pathogen (Neisseria gonorrhoeae) over time. Findings indicate that changes in susceptibility may be observed in some regions.

What is Still Uncertain About the Research Base

The majority of available evidence was studied for conditions associated with acute episodes, meaning the focus of the research is on short-term outcomes. Follow-up durations were limited in many of the key trials, and consequently, long-term effects are not fully established. Data for certain patient groups, such as very young infants (under six months) or adults with significant comorbidities like impaired kidney function, may be limited or is not yet established.

Frequently Asked Questions (FAQ)

Common questions about Suprax (FAQ)

Q: What is the risk of a severe allergic reaction to Suprax?

A: Official product information describes that severe, sometimes life-threatening, hypersensitivity reactions (including anaphylaxis) have been reported with the use of Suprax. The official information describes the need for the drug to be discontinued immediately if such reactions occur.

Q: Can older adults use Suprax, or are there specific precautions for the elderly?

A: According to official regulatory documents, Suprax is primarily eliminated by the kidneys. Due to the increased likelihood of reduced kidney function in older adults, a dosage adjustment is described as necessary for individuals with significant renal impairment.

Q: What is the difference between Suprax and other cephalosporin antibiotics?

A: Suprax (cefixime) is officially classified as a third-generation cephalosporin antibiotic. Studies and official information indicate this class provides enhanced chemical stability against bacterial defense mechanisms and often describes it as having an expanded spectrum of activity compared to older cephalosporins.

Q: Can Suprax cause dizziness or affect a person's ability to drive?

A: Dizziness is listed as a reported side effect of Suprax. Official information does not specifically describe an influence on driving ability, but it is advised that this ability may be impaired if side effects like dizziness occur.

Q: Why is it important to finish the full course of Suprax even if symptoms improve?

A: Official regulatory documents state that the use of any antibacterial agent should be limited to treating infections proven or strongly suspected to be caused by bacteria. Using the drug inappropriately risks the development of drug-resistant bacteria. The need for use to be limited to proven infections is described in official warnings.

Q: Does Suprax cause temporary changes in blood test results?

A: Yes, official drug-laboratory test interactions are reported. The drug is known to cause false-positive results in certain laboratory screenings, including some non-enzymatic urine glucose tests and the direct Coombs test.

Q: Is the liquid suspension form of Suprax different from the tablet form?

A: Official product information indicates a difference in how the body processes the forms. The oral suspension is more completely absorbed and achieves higher peak blood levels than the tablets. Therefore, official documents describe that tablets are generally not recommended to be substituted for the suspension for conditions like otitis media.

Q: Do other medicines, like over-the-counter painkillers, interact with Suprax?

A: Official product labeling primarily details interactions with prescription drugs like Warfarin. However, specific non-prescription medicines (e.g., aspirin) have been noted in research to interact, potentially by affecting how the kidneys clear Suprax from the body.

Q: What should a patient do if they develop a severe skin rash while on Suprax?

A: Official warnings describe the drug should be discontinued immediately if symptoms of severe skin reactions (such as blistering or peeling of the skin) occur. Appropriate medical attention is described as necessary for these serious reactions.

Q: Are there any known issues with Suprax for people who have had colitis?

A: Official warnings note that severe diarrhea associated with Clostridioides difficile (C. diff), called CDAD, has been reported with the use of Suprax. The condition can range in severity, and cases of colitis have been reported.

Q: What is the reason Suprax is available as a chewable tablet?

A: Regulatory approval documents describe that the availability of multiple formulations, including the chewable tablet, is intended to suit diverse patient groups and administration needs, particularly for children. The chewable tablets are described as being bioequivalent to the oral suspension.

Q: Is Suprax effective against bacteria that are resistant to other antibiotics?

A: The drug's classification as a third-generation cephalosporin is significant. Official documents note that this class provides enhanced chemical stability against bacterial defense mechanisms known as beta-lactamase enzymes. This stability is a key mechanism that helps it address a broad spectrum of susceptible bacteria.

Q: How long does the antibiotic Suprax usually stay in your system?

A: Pharmacokinetic data from official documents describes the serum elimination half-life of cefixime in adults with normal kidney function. This half-life, which represents the time it takes for half the drug to be eliminated, typically ranges from approximately 2.4 to 4 hours.

Q: Can taking Suprax make a person more susceptible to yeast infections?

A: Official adverse event reports list candidiasis as a reported side effect of Suprax. Candidiasis refers to an infection caused by Candida yeast, which may include vaginitis.

Q: Does Suprax interact with alcohol, and is consumption generally advised?

A: Official product information for Suprax does not consistently report a major drug-to-drug interaction with alcohol. However, as with many medications, official bodies often advise caution, as alcohol may worsen common side effects like dizziness or stomach upset.

Q: Can Suprax be used to treat infections caused by viruses like the common cold?

A: Official indications state that Suprax should only be used to treat infections that are proven or strongly suspected to be caused by susceptible bacteria. It is not intended for use against viral infections, such as the common cold or flu.

Q: How long after finishing Suprax can side effects like diarrhea potentially last?

A: While most side effects typically resolve upon stopping the medication, official monographs note that severe diarrhea (Clostridioides difficile-associated diarrhea or CDAD) has been reported to occur up to two months after the administration of an antibacterial agent.

Q: Can Suprax affect a person's mood or cause confusion?

A: Serious adverse effect reports mention that confusion has been reported with Suprax use. Seizures have also been noted in patients using this class of antibiotics.

Q: Can Suprax be used for people with a history of seizures?

A: Official warnings describe that several cephalosporins, including Suprax, have been implicated in triggering seizures in some patients. Patients with a history of seizures are generally advised to use caution.

Q: Is Suprax known to cause joint pain or inflammation?

A: Regulatory adverse event reports list joint pain (known medically as arthralgia) and inflammation of the joints as reported effects associated with Suprax.

How should Suprax be stored and disposed of?

Official Storage and Disposal Instructions for Suprax

Suprax (cefixime) must be stored according to its specific formulation to ensure stability. All forms must be kept out of the reach and sight of children and maintained in their tightly closed original container.

Formulation Required Storage Condition Stability/Handling Constraint
Tablets Store at room temperature (e.g., below 25°C), away from excess heat and moisture. None beyond general protection.
Oral Suspension May be stored at room temperature or refrigerated after reconstitution. Do not freeze. Must be discarded after 14 days of reconstitution.

Unused or expired medication must not be disposed of in household waste or wastewater. All disposal must follow local, regional, and national regulations, typically requiring return to a pharmacy or designated collection program.

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

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