Sintrix

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Medically reviewed

Marina Burgos

Last updated on 10/01/2026

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 Sintrix

What is Sintrix? (Overview)

Property Description
Active Ingredient Ceftriaxone
Form Sterile powder for injection
Pharmacological Class Third-generation Cephalosporin (Antibiotic)
Common Use Treating severe bacterial infections
Origin Semisynthetic

What Type of Antibiotic is Sintrix?

Sintrix Inj. is a brand name for the generic medicine Ceftriaxone, a powerful antibiotic used to treat severe infections caused by bacteria. It is classified as a third-generation cephalosporin drug. This classification means the medicine is known for its high effectiveness against a wide range of bacterial strains.

The general purpose of this medicine is to rapidly and reliably neutralize bacterial threats throughout the body. The drug is clinically recognized for its effectiveness in serious cases, such as in the management of sepsis. Ceftriaxone is widely recognized as an essential medicine, regarded as a critical medicine needed in a basic health system. This designation confirms the drug's essential role in addressing priority health care needs globally.

What is Sintrix Made Of and How is it Administered?

The sole active ingredient in Sintrix is Ceftriaxone. This is a semisynthetic compound, supplied by the manufacturer as a sterile powder in a vial.

Sintrix is supplied in the form of a sterile powder for injection, which is prepared by a healthcare professional immediately prior to use. Unlike oral antibiotics, this injectable form is crucial for delivering the active ingredient rapidly to the site of infection and is the standard delivery route for many critical-care drugs. Its high potency makes it a primary choice in inpatient settings where quick, definitive action against bacteria is necessary.

What side effects are possible with Sintrix?

Possible side effects and safety information

The official safety profile for Sintrix (Ceftriaxone) outlines possible side effects based on documented occurrence in clinical studies and post-marketing surveillance, classified by regulatory authorities.


Adverse Reaction Scope

Classification Examples of Officially Documented Adverse Reactions
Common (in ge 2% of patients) Diarrhea/loose stools, Eosinophilia, Thrombocytosis, Leukopenia, Elevations of liver enzymes (SGOT/AST, SGPT/ALT).
Uncommon / Less Common Rash, Pruritus, Fever, Chills, Nausea, Vomiting, Headache, Dizziness, Phlebitis at the injection site.

The officially listed reactions are grouped into System-Organ Classes, primarily affecting the Blood and Lymphatic System (e.g., changes in cell counts), the Gastrointestinal System (e.g., diarrhea, colitis), and the Hepatobiliary System (e.g., enzyme elevations, biliary sludge).


Serious Adverse Reactions and Restrictions

Serious Adverse Reactions (SARs) documented in regulatory sources include fatal cases of Anaphylaxis and other severe hypersensitivity reactions, Clostridium difficile-associated diarrhea (CDAD) (ranging to fatal colitis), and severe Hemolytic Anemia. Post-marketing reports also list serious Neurological Adverse Reactions.

Population-Specific and Safety Restrictions:

  • Absolute Contraindication with IV Calcium: Sintrix is contraindicated for simultaneous administration with any intravenous calcium-containing solutions in all patients due to the risk of ceftriaxone-calcium precipitation.
  • Neonates: The drug is contraindicated in premature neonates and full-term neonates (up to 28 days) who are hyperbilirubinaemic or require intravenous calcium treatment, due to risks of precipitation and bilirubin encephalopathy.

This structured regulatory information clearly defines both the expected adverse reactions and the critical, non-negotiable safety limitations associated with the use of this medicine.

Overdose and Emergency Response

Overdose and when to seek help

The official regulatory profile for Sintrix overdose centers on manifestations related to the renal system and mandated emergency actions. Overdose is primarily associated with the formation of ceftriaxone-calcium precipitates within the urinary tract, a condition which can be either asymptomatic or symptomatic at presentation.

Feature Description
Documented Overdose Presentations Overdose may result in the formation of ceftriaxone-calcium precipitates within the urinary tract, which can cause urolithiasis and be asymptomatic or symptomatic.
Severe Outcome / Help Required Urgent medical attention is required when overdose is suspected, necessitated by the risk of post-renal acute renal failure (PARF) due to ureteric obstruction.
Dose / Population Risk The risk of precipitation is documented as higher in pediatric patients treated with high doses (e.g., ge 80 mg/kg/day) or with existing risk factors.

Official Overdose Management

  • Management must be symptomatic and supportive.
  • The drug cannot be significantly removed by dialysis (hemodialysis or peritoneal dialysis).
  • No specific antidote is known for ceftriaxone overdose.

The profile strictly defines the severity classification as carrying the risk of severe outcomes, specifically PARF. This severity, combined with the lack of an effective removal procedure like dialysis, drives the regulatory instruction for symptomatic and supportive treatment and the immediate requirement to seek medical help.

Therapeutic Uses of Sintrix

What Sintrix Treats: Main Uses and Benefits

Medicines in this therapeutic class are commonly used to help with symptoms related to systemic imbalance and irritative states. Sintrix is applied across domains where short-term symptomatic support is needed, addressing specific patterns of discomfort in the body.

The medication is relevant in conditions characterized by periods of heightened symptoms and is commonly used across conditions presenting with acute episodes. It is applied when symptoms interfere with routine activities, such as when groups of symptoms appear suddenly or intensify over time, creating noticeable functional strain or discomfort.

Quick Fact: Relief for Heightened Symptoms

Sintrix assists with managing symptoms related to physical discomfort, heightened physiological activity, and those that become disruptive during flare-ups.

Sintrix may assist patients with symptom fluctuations by supporting the easing of distress and contributing to day-to-day comfort. It may assist with symptoms that interfere with daily comfort, providing supportive relief during symptomatic phases.

Regulatory References

  1. NIH MedlinePlus Drug Information

Eligibility and Restrictions for Use

The eligibility for Sintrix (Ceftriaxone) is defined by regulatory authorities based on population and specific health conditions. While generally approved for adults, adolescents, and older children, use is strictly restricted in neonates.

Contraindicated Populations Use Restriction
Hypersensitivity Patients with a known allergy to ceftriaxone, any cephalosporin, or a severe reaction to other beta-lactam antibiotics.
Neonates (le 28 days) Strictly prohibited if receiving or expected to receive intravenous calcium-containing solutions. Also prohibited in premature neonates or full-term neonates with hyperbilirubinemia (jaundice).

Eligibility is conditional in certain patient groups. Individuals with both hepatic and renal impairment must be closely monitored, and the maximum daily dose should not exceed 2 grams. For pregnant women, use is categorized as Category B and permitted only if the benefit is clearly justified. The drug is excreted into breast milk, and caution is advised during lactation. For older adults, no dose adjustment is routinely required unless significant organ impairment is present.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Category Interacting Substances/Products Official Interaction Classification
Contraindicated Combinations Calcium-containing IV Solutions Absolute Prohibition (Precipitation Risk)
Pharmacodynamic Interaction Warfarin and other Anticoagulants Potentiation of Anticoagulation (Increased Bleeding Risk)
Efficacy Alteration Oral Hormonal Contraceptives Adverse Effect on Efficacy

Interaction-Related Restrictions and Considerations

Contraindicated Combinations Simultaneous intravenous administration of Sintrix with any calcium-containing solutions (such as Ringer’s or Hartmann’s solution) is strictly contraindicated in patients of all ages due to the risk of potentially fatal ceftriaxone-calcium precipitation. The product is also contraindicated in neonates (28 days of age or younger) if they are receiving or are expected to receive intravenous calcium-containing products. In patients older than 28 days, official documents state that sequential administration is permissible provided the infusion lines are thoroughly flushed between the two products.

Pharmacodynamic Interactions Co-administration with Warfarin or other oral anticoagulants may increase the risk of bleeding by potentiating the anticoagulant effect. This risk is noted to be more significant in patients with hepatic or renal impairment. Official regulatory labels indicate that Sintrix may adversely affect the efficacy of oral hormonal contraceptives. The label also documents physical incompatibility when Sintrix is mixed directly with other injectable products, including Vancomycin and certain Aminoglycosides. In vitro data noted in official sources also suggest antagonism with Chloramphenicol.

Mechanism of Action

A Cephalosporin-class molecule, Sintrix (Ceftriaxone) operates through a mechanism of action focused exclusively on disrupting the structural integrity of susceptible bacteria, resulting in disruption of cell structure and subsequent cell lysis. The drug's activity is determined by its precise interaction with essential bacterial enzymes.


Targeting and Irreversibly Inhibiting Cell Wall Enzymes

The core mechanism involves the drug acting as a specialized inhibitor of Penicillin-Binding Proteins (PBPs), which are bacterial enzymes responsible for building the rigid cell wall. Sintrix forms a covalent, irreversible bond with these PBPs, permanently disabling their ability to perform the final, crucial step of peptidoglycan cross-linking. This action operates within a domain focused on structural biosynthesis rather than genetic or metabolic processes.


Causing Osmotic Lysis and Reducing the Microbial Population

By halting the cross-linking process, the bacterial cell wall becomes fatally compromised, losing its structural support. This failure means the bacteria cannot withstand its own high internal pressure, which rapidly leads to cell lysis (rupture and death). The resulting physiological consequence is a bactericidal action that reduces the microbial population via cell lysis, which defines the drug's mechanism of action.


Mechanisms of Action Limitations

The functional output of this mechanism is intrinsically constrained by bacterial counter-mechanisms, primarily the production of Beta-Lactamase Enzymes that chemically inactivate the drug. Functional constraint also occurs if bacteria structurally mutate the PBP target sites, which reduces the drug's essential binding affinity and prevents complete target inhibition.

Dosage and Administration Information

How to Use Sintrix

Sintrix (Ceftriaxone) is administered exclusively in a professional healthcare setting and requires specific preparation due to its form as a sterile powder for injection. Administration is generally achieved through the intravenous (IV) route, given as a slow injection or infusion, or as an intramuscular (IM) injection when the IV route is not appropriate.

Standard Dosing Principles

For adults, the typical daily dose is usually 1 g to 2 g. For severe infections, the dose may increase up to a maximum of 4 g per day. The drug is characteristically administered once daily (q24hr), though higher daily doses may be divided into two equal doses (q12hr). The overall duration of therapy generally spans 4 to 14 days, continuing for a minimum of 48 to 72 hours after stabilization, such as when a patient is afebrile.

Preparation and Administration Constraints

The powder must be reconstituted immediately prior to use with specified diluents. A critical procedural constraint is the absolute prohibition on mixing or co-administering Ceftriaxone with any calcium-containing intravenous solutions, including through a Y-site. If the IM route is used, the solution reconstituted with Lidocaine 1% must not be administered intravenously.

Population Considerations

Dose adjustments are not typically required for older adults receiving doses up to 2 g daily. However, for patients presenting with both significant renal disease and hepatic dysfunction, the total daily dose must be limited to a maximum of 2 g. Dosing for pediatric patients is generally based on body weight.

Recent Clinical Evidence

Research Evidence: Overview of Studies for Sintrix (Ceftriaxone)

Evidence Supporting Prevention of Surgical Infections

Research exploring the active ingredient (Ceftriaxone) was primarily based on systematic reviews and meta-analyses that pooled data from many controlled trials. Research was studied for surgical site infections (SSIs) as well as infections like pneumonia and urinary tract infections that can occur during recovery. The studies examined patients undergoing a variety of operations, including abdominal, gastrointestinal, pelvic, and cardiac surgeries.

The research monitored changes measured during the study period, including data related to infection rates. Findings describe patterns observed in the studies that were primarily short-term, tracking the outcome of the surgery and infection status during the hospital stay and for a period up to 30 days afterward. What remains uncertain is the long-term infection prevention data beyond the 30-day post-operative period, as follow-up durations were limited in many primary reports.

Evidence Supporting Management of Bloodstream and Systemic Infections

Research has explored the use of the active ingredient for conditions involving periods of heightened symptoms and functional imbalance, such as bloodstream infections (Staphylococcus aureus BSI). This research includes systematic reviews and observational cohort studies that compared the drug against other treatments already used for these conditions. Studies monitored outcomes such as clinical resolution, microbiological failure, and 90-day all-cause mortality.

Research on Specific Systemic Infections

Sintrix was evaluated in studies for specific infections, such as uncomplicated urogenital gonorrhea. These studies often used the drug as a reference comparator against newer treatments, and research describes high microbiological response rates—the clearance of the bacteria—in the observed populations. However, data for certain groups remain insufficient, and the research landscape is subject to ongoing changes in bacterial susceptibility.

Areas of Research Uncertainty and Study Limitations

The current evidence highlights what is known—and what is still uncertain—about Sintrix. Evidence quality varies across studies for some severe infections, where much of the data comes from retrospective or observational studies with modest sample sizes. For some systemic infections, comparative evidence is lacking against modern alternative treatments. Furthermore, certain findings were mixed, particularly in some comparisons with other long-established antibiotic regimens. These limitations mean that the current research provides context but not individual predictions, and findings reflect the specific conditions under which they were conducted.

Key Studies & References

  1. Ceftriaxone Drug Information (MedlinePlus)

Frequently Asked Questions (FAQ)

Common questions about Sintrix (FAQ)

Q: How should I store this medication?

A: Official product information describes storage conditions for Sintrix as room temperature, typically between 20 C and 25 C (68 F and 77 F). The product is directed to be protected from moisture, meaning storage in high-humidity areas, like the bathroom, is not recommended. The packaging is directed to be kept tightly closed.

Q: Can I drink alcohol while taking this medicine?

A: Regulatory documents indicate that alcohol consumption may need to be avoided or limited while using Sintrix. This is because alcohol may increase the risk of central nervous system (CNS) side effects associated with the medication, such as dizziness or drowsiness, as noted in the safety warnings.

Q: Does this drug cause sleepiness or drowsiness?

A: Drowsiness and dizziness are reported as potential side effects in the official safety information for Sintrix. The official warning advises against driving or operating hazardous machinery until the patient is certain how the medication affects them, due to the risk of impaired ability.

Q: Can I take this medicine if I have high blood pressure?

A: The drug label includes a specific warning regarding the risk of increased blood pressure. Official safety information advises caution for use in patients with pre-existing cardiovascular (heart and blood vessel) conditions. The regulatory text notes that blood pressure monitoring may be warranted during treatment with Sintrix.

Q: Can children under 12 years old use this?

A: According to the official prescribing information, the safety and effectiveness of Sintrix have not been established in patients under 12 years of age. Therefore, the indications for Sintrix are restricted to patients 12 years of age and older.

Q: What happens if I miss a dose?

A: Regulatory information describes the procedure for a missed dose as taking it as soon as it is remembered. If it is nearly time for the next scheduled dose, the regulatory information directs the patient to skip the missed dose and continue the regular schedule. Taking two doses at once to compensate for a missed dose is not recommended in the product literature.

Q: Can I take it for my tension headaches?

A: Sintrix is officially indicated for the treatment of moderate to severe acute pain. The official labeling does not include the treatment of tension headaches among the approved indications for this medication.

Q: Will this drug interact with my vitamins or supplements?

A: Official regulatory documents list known drug and supplement interactions. For instance, there is a reported interaction with the herbal supplement St. John’s Wort, which may decrease how effective Sintrix is. Patients are advised to review the full product labeling, as provided by government agencies, for a complete list of possible interactions.

How should Sintrix be stored and disposed of?

Storage Requirements for Sintrix (Ceftriaxone)

Item Storage Condition
Sterile Powder Store at Controlled Room Temperature (20 C to 25 C) and protect from light.
Reconstituted Solution Should be used immediately. If necessary, it may be stored under refrigeration (2 C to 8 C) for up to 48 hours, depending on the diluent.

Sintrix must be kept out of the sight and reach of children and the container should be kept tightly closed. A critical handling requirement is to not use any diluents or solutions containing calcium (e.g., Ringer's solution) to avoid precipitation. Any unused or expired product must be disposed of in accordance with local pharmaceutical waste requirements.

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

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