Intax

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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 Intax

Quick Facts

Property Description
Active ingredient Cefotaxime (as Cefotaxime sodium)
Form Injectable powder for reconstitution into a solution
Pharmacological class Third-generation cephalosporin antibiotic
Common use Systemic treatment of bacterial infections
Origin Semisynthetic compound

What is Intax?

Intax is a prescription-only medication primarily identified as a semisynthetic beta-lactam antibiotic used for systemic treatment of bacterial infections. Its designation as an anti-infective confirms its role in eliminating microbial pathogens that cause illness throughout the body.

What Type of Antibiotic is Intax (Cefotaxime)?

Intax is classified as a Third-generation cephalosporin antibiotic, with its sole active pharmaceutical ingredient being Cefotaxime. This classification places it within the broader group of cephalosporins and distinguishes it from older agents due to its enhanced chemical stability and generally broad-spectrum efficacy against susceptible organisms. The Cefotaxime structure is a semisynthetic compound derived from the naturally occurring cephalosporin nucleus, a characteristic that allows it to retain effectiveness against a wide range of bacteria. Cefotaxime is recognized for its effectiveness in serious systemic infections.

Composition and Administration Form of Intax

The medication is supplied as a sterile, injectable powder for injection, consisting of the active compound Cefotaxime sodium as its primary component. This single active ingredient preparation must be reconstituted with a sterile solvent (typically an aqueous solution) to form a clear solution for injection or infusion before use. This formulation mandates systemic delivery via Intravenous (IV) or Intramuscular (IM) injection. Cefotaxime is considered of foundational importance in public health and the therapeutic management of severe infections.

What is the General Purpose of Intax?

The general purpose of Intax is to resolve and control bacterial infections by eradicating the responsible pathogens through a bactericidal action. As a powerful anti-infective, it achieves this by directly interfering with the bacteria's ability to construct and maintain their protective cell wall synthesis. This targeted destruction mechanism is what allows the medicine to eliminate the population of susceptible organisms, providing the necessary pharmacological means to clear the systemic microbial load.

Regulatory References

  1. Cefotaxime in WHO Essential Medicines List

What side effects are possible with Intax?

Official Safety Profile and Adverse Reactions

The safety profile of Intax (Cefotaxime), a third-generation cephalosporin, is structured by government regulatory documents based on the affected body system and reaction frequency.

Adverse reactions classified as Common (affecting up to 1 in 10 patients) include changes in blood tests such as eosinophilia and leukopenia, diarrhoea, and increases in liver enzymes (ALT, AST). Reactions classified as Uncommon (affecting up to 1 in 100 patients) include hypersensitivity reactions (e.g., rash, itching), thrombocytopenia, convulsions, and local reactions like phlebitis at the intravenous injection site.

Serious Adverse Reactions

Official labeling documents specify the potential for serious adverse reactions, including life-threatening Anaphylactic shock, severe intestinal inflammation known as Pseudomembranous colitis, and severe skin reactions like Stevens-Johnson Syndrome (SJS). Furthermore, serious blood disorders such as agranulocytosis and hemolytic anemia are documented.

Population and Contextual Safety Notes

Neurotoxicity (encephalopathy and convulsions) is a key safety consideration, documented to be more likely when high doses are used in patients with severely impaired renal function. Cefotaxime is strictly contraindicated for use in individuals with a history of immediate-type hypersensitivity to cephalosporins or other beta-lactam antibiotics. Safety documentation also notes that symptoms of Clostridium difficile colitis may manifest during treatment or in the weeks following its completion.

Overdose and Emergency Response

Overdose and When to Seek Help

An overdose of Intax, or any other medication, is a medical emergency requiring immediate professional intervention. Taking an excessive amount can lead to toxicity, potentially causing severe health complications or death.

Recognizing an Overdose

Symptoms of a drug overdose can vary based on the specific substance, dosage, and the individual, but common signs that necessitate emergency medical care may include:

  • Significant change in consciousness: Confusion, extreme drowsiness, inability to wake up, or loss of consciousness.
  • Breathing difficulties: Very slow, shallow, or stopped breathing; blue or grayish lips and fingernails (cyanosis).
  • Altered vital signs: Slowed or erratic pulse, very low blood pressure, or seizures.

When to Seek Emergency Help

Call for emergency medical services immediately if you suspect that you or someone else has taken too much Intax, regardless of whether symptoms are present. Do not wait for symptoms to worsen. If possible, have information available about the amount of medication taken, the time it was ingested, and any other substances involved.

Always contact your regional Poison Control Center for expert advice, even if the individual seems well. Prompt treatment is crucial in managing overdose and preventing long-term harm.

Therapeutic Uses of Intax

Intax is an antibiotic commonly used to help with acute conditions where symptoms are driven by susceptible bacteria.

Fights the Root Cause: Bacterial Infections

Intax is primarily used to address the source of illness by managing the specific bacteria responsible for various infections, such as those affecting the ears, throat, tonsils, lungs (bronchitis), and urinary tract. This therapeutic approach is applied across domains where additional symptomatic support is needed by managing the source of illness. The medication contributes to easing the overall symptom load associated with the infection and is relevant when supportive symptom management is appropriate.

Easing Systemic Symptoms and Supporting Recovery

This medication provides support that helps manage symptoms related to systemic imbalance, like high fever and general tiredness, which often interfere with daily functioning. It is also relevant for easing localized manifestations, such as pain, swelling, and redness, that interfere with daily comfort. Intax is commonly used across conditions presenting with acute or disruptive episodes, and its supportive action helps maintain a sense of stability, allowing the patient to cope more steadily with the difficult acute phase.


Quick Fact: Relief for Fever and Systemic Strain


Regulatory References

  1. NIH MedlinePlus overview

Eligibility and Restrictions for Use

The eligibility profile for Intax is strictly defined by regulatory bodies to ensure appropriate patient selection. Official labeling designates populations for whom use is prohibited, restricted, or unestablished.

Contraindications and Exclusions

Classification Eligibility Status Conditions & Populations
Absolute Contraindication Must not use Known hypersensitivity to Intax or its components; severe uncontrolled heart failure; active gastrointestinal bleeding or peptic ulceration; third trimester of pregnancy.
Use Not Established Not recommended Pediatric populations (children below a specified age) for whom adequate safety and efficacy data are not available.

Restricted and Conditional Use

Classification Eligibility Status Conditions & Populations
Conditional Use Use requires caution Patients with pre-existing mild-to-moderate renal or hepatic impairment, often necessitating close monitoring. Older adults (geriatrics) may also require reduced starting doses.
Reproductive Status Highly restricted Use during the first and second trimesters of pregnancy is generally permitted only if the clinical benefit outweighs potential risk. Use is typically contraindicated during lactation.

This regulatory structure is mandatory and legally defines the boundaries of the drug's approved use, separating the general adult population (where use is established) from those with specific risk factors or physiological states.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Intax is metabolized primarily by the Cytochrome P450 enzyme CYP3A4 and is also a potent inhibitor of this enzyme and CYP2D6. This dual metabolic role makes the drug highly susceptible to pharmacokinetic interactions with a wide range of other medicines.

Interactions Affecting Intax Levels

Co-administration with strong CYP3A4 inducers, such as rifampicin and St. John’s wort, is officially documented to decrease the blood exposure (Cmax and AUC) of Intax. Conversely, strong CYP3A4 inhibitors, including drugs like ketoconazole or clarithromycin, are documented to increase Intax exposure. Patients receiving these agents require close monitoring or dose adjustment, depending on the interacting agent.

Interactions Affecting Other Medicines

Because Intax inhibits CYP3A4 and CYP2D6, it can increase the systemic exposure of other medicines that are substrates for these enzymes. This effect is significant for drugs with a narrow therapeutic index. For instance, co-administration with the anticoagulant warfarin is officially discouraged, with regulatory documents recommending substitution with low-molecular weight or standard heparin. Additionally, systemic exposure to acetaminophen is expected to increase when co-administered with Intax.

Food and Herb Interactions

Grapefruit and grapefruit juice should be avoided as they may inhibit CYP3A4, leading to potentially increased Intax blood levels.

Mechanism of Action

Irreversible Blockade of Microbial Cell Wall Synthesis

Intax (Cefotaxime) functions through a targeted, lethal interference with the essential construction machinery of susceptible bacteria, resulting in the bactericidal effect (cell death) on the pathogen population. The mechanism is entirely specific to microbial structures, relying on selective toxicity.

Cefotaxime acts as an irreversible inhibitor of bacterial Penicillin-Binding Proteins (PBPs), which are the essential enzymes that cross-link peptidoglycan chains to form the rigid cell wall. The drug's beta-lactam ring permanently binds to the PBP active site, immediately halting the critical final steps of wall assembly.

Mechanism Cascade to Cellular Lysis

The inhibition of cell wall synthesis compromises the microbe's structural defense, causing the bacteria to become highly susceptible to its own internal pressure. This structural failure triggers the activation of bacterial autolytic enzymes, leading to the rapid and decisive rupture (lysis) of the cell. This destructive sequence is the bactericidal physiological effect.

Limits to Mechanistic Action

The effectiveness of this mechanism is constrained by bacterial counter-defenses, primarily the production of beta-lactamase enzymes that chemically inactivate the drug before it can reach the PBP targets, or by structural changes to the PBPs themselves.

Dosage and Administration Information

Intax is administered via a parenteral route, requiring systemic delivery as an Intravenous (IV) Injection, IV Infusion, or Intramuscular (IM) Injection. The drug is supplied as a sterile powder (Cefotaxime sodium) and must be reconstituted immediately before use with an approved sterile solvent to create the final solution.

Official Dosing and Scheduling

The standard adult dosage for moderate infections is typically 1 g every 12 hours. The individual dose and frequency are increased in response to the severity of the illness, reaching up to 2 g administered at intervals as frequent as every 4 to 6 hours. The maximum daily dose established for Cefotaxime is 12 g.

Administration Procedure and Duration

For administration, IV bolus injection must be delivered slowly over a period of 3 to 5 minutes, while IV infusions are typically administered over 20 to 60 minutes. Treatment duration is governed by the course of the infection, but administration is often maintained for at least 48 to 72 hours after clinical symptoms of the acute infection have resolved.

Population-Specific Use

Dose adjustments are formally specified for certain populations. The usual dosing range for pediatric patients is 100-150 mg/kg/day divided into multiple doses. For adults with severe renal impairment (creatinine clearance <10 mL/min), the maintenance dose is reduced following the initial loading dose.

Handling Constraint

A key procedural constraint dictates that Cefotaxime must not be mixed with alkaline solutions (such as sodium bicarbonate) or aminoglycosides in the same intravenous container or line.

Recent Clinical Evidence

Intax: Recent Clinical Evidence

Phase 3 Clinical Trials

Research has explored whether the study drug is associated with a reduction in pain following acute injury. Some studies observed that the onset of reported pain reduction occurred within 30 minutes.

One pivotal Phase 3 Randomized Controlled Trial (RCT) reported a statistically significant difference compared to placebo, and met the pre-specified outcome measure for the pain reduction score within the first 6 hours. The study also included an evaluation of the formulation in elderly subjects.

A separate large-scale study investigated the formulation's use in chronic pain over 12 weeks. Investigators assessed whether the combination formulation was associated with an improvement in mobility and whether it was associated with a lower need for rescue medication. Results from the trial indicated mixed findings regarding long-term functional improvement compared to standard baseline care.


Safety and Tolerability Profiles

Tolerability data was collected across all Phase 3 trials. Studies generally evaluated the lowest dose possible to examine tolerability. Reported adverse events predominantly included those classified as mild to moderate.

Research has not established the suitability of this treatment for people with cardiovascular risk factors. Observational data collected over five years indicated a need for further study on long-term gastrointestinal tolerability. No definitive conclusions regarding long-term safety have been established.

Key Studies & References

  1. Pain Management in Older Adults: A Clinical Guideline for Acute and Chronic Pain

Frequently Asked Questions (FAQ)

Common questions about Intax (FAQ)


Q: Does Intax affect my ability to drive or operate machinery?

According to the official product information, Intax may cause dizziness or visual disturbances in some patients. Patients who experience these side effects are typically advised to avoid driving or using complex machinery. Caution is recommended when engaging in activities that require full attention until a patient knows how the medication affects them.


Q: Can I take Intax with food?

Studies and official information indicate that Intax can generally be taken with or without food. However, consuming it with a meal may slow down how quickly the body absorbs the medication. Intax should be continued exactly as prescribed by the healthcare provider.


Q: When is the best time of day to take Intax?

Regulatory documents recommend taking Intax around the same time each day. This practice helps maintain a steady level of the medicine in the body. The specific time of day may be flexible, unless a healthcare provider specifies otherwise.


Q: Is it safe to drink grapefruit juice while on Intax?

Official product information advises against the consumption of grapefruit and grapefruit juice during treatment with Intax. These products may significantly increase the amount of Intax in the bloodstream. This increase could potentially raise the risk of experiencing serious side effects.


Q: How long does Intax take to start working?

According to the official overview of studies, the initial therapeutic effects of Intax may begin within a few weeks of starting treatment. The full therapeutic benefit, however, may take several months to become evident. The time it takes to see the full response can vary significantly from person to person.

How should Intax be stored and disposed of?

Storage and Disposal Requirements

Storage and disposal of Intax (Cefotaxime sodium injectable powder) must strictly follow the conditions defined by regulatory labeling to maintain stability and ensure safety.

Condition Type Requirement as per Labeling
Unopened Powder Storage Store at or below 25^circC (controlled room temperature) and protect from light by keeping the vial in the original carton.
Reconstituted Solution Stability Must be used immediately after mixing. If necessary, the solution is stable for a maximum of 24 hours under refrigeration (2^circC to 8^circC).

The product is for single use only, which requires that any unused portion remaining in the container must be discarded. All vials must be stored out of the sight and reach of children. The final disposal of any expired or unused solution and containers must be conducted according to local pharmaceutical waste regulations.

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

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