Trichozole

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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 Trichozole

Understanding Trichozole

Trichozole is an antimicrobial medication primarily containing metronidazole as its active ingredient. It belongs to a class of drugs known as nitroimidazoles. This medication is specifically designed to treat infections caused by anaerobic bacteria and certain parasites.

How it Works

The active component in Trichozole works by entering the cells of microorganisms and interfering with their DNA synthesis. By disrupting the genetic material of the infectious agent, the medication prevents the organisms from reproducing and effectively causes the cell to die. This mechanism is targeted toward specific types of bacteria and protozoa that do not require oxygen to grow (anaerobes).

Common Applications

Trichozole is used to manage a variety of conditions, including:

  • Protozoal Infections: It is effective against certain parasitic infections such as trichomoniasis, giardiasis, and amoebiasis.
  • Anaerobic Bacterial Infections: It is used to treat infections in various parts of the body, including the abdomen, joints, and respiratory tract, when caused by susceptible anaerobic bacteria.
  • Skin and Dental Infections: It may be prescribed for specific dermatological conditions or severe dental abscesses.
  • Surgical Prophylaxis: In certain clinical settings, it may be used to help prevent the development of infections following specific surgical procedures.

Chemical Profile

Metronidazole, the primary agent in Trichozole, is a synthetic derivative of nitroimidazole. Its chemical structure allows it to remain inactive until it enters a cell with the appropriate metabolic environment, typically found in anaerobic organisms. This characteristic helps focus the medication's activity on the site of infection while minimizing impact on aerobic cells.

What side effects are possible with Trichozole?

Possible Side Effects and Safety Information: Trichozole

Warning: Carcinogenicity Risk The U.S. Food and Drug Administration (FDA) requires a Black Box Warning for Trichozole (metronidazole), based on data showing it is carcinogenic in mice and rats. Its use must be strictly limited to the conditions approved on the label to avoid unnecessary exposure.

Common Adverse Reactions

Commonly reported side effects typically involve the Gastrointestinal System and include nausea, vomiting, diarrhea, abdominal cramps, headache, and a persistent, unpleasant metallic taste. These effects are generally mild.

Serious and Clinically Significant Risks

Severe reactions have been documented, primarily affecting the Nervous System and Skin:

  • Neurological Effects: Serious central nervous system (CNS) toxicities such as encephalopathy (abnormal brain function), seizures, and aseptic meningitis have been reported. Peripheral neuropathy (numbness, tingling, pain, or weakness in the extremities) may also occur, which can be permanent. Immediate discontinuation is necessary if neurological symptoms develop.
  • Severe Skin Reactions: Potentially fatal cutaneous reactions, including Stevens-Johnson Syndrome (SJS), Toxic Epidermal Necrolysis (TEN), and DRESS (Drug Reaction with Eosinophilia and Systemic Symptoms), require emergency medical intervention.
  • Hematologic/Hepatic: Leukopenia (low white blood cell count) and pancreatitis are documented adverse reactions.

Safety Restrictions and Limitations

  • Alcohol: Consumption of alcoholic beverages or products containing propylene glycol is strictly contraindicated during therapy and for at least three days after the last dose, due to the risk of a severe disulfiram-like reaction (flushing, vomiting, headache).
  • Co-administration: The drug should not be used in patients who have taken disulfiram in the last two weeks.
  • Monitoring: Patients with severe hepatic impairment (Child-Pugh C) or those receiving prolonged therapy may require dosage adjustments and close safety monitoring due to slower drug clearance and the potential for metabolite accumulation.

Overdose and Emergency Response

Overdose and When to Seek Help: Official Regulatory Information

The regulatory profile for Trichozole (Metronidazole) overdose is defined by the potential for acute central nervous system (CNS) and gastrointestinal toxicity, requiring immediate supportive care.

Documented Overdose Manifestations

Official prescribing information documents overdose presentations including severe neurological effects and gastrointestinal distress. Symptoms observed in cases of high-dose exposure (e.g., up to 15 g) include Nausea, Vomiting, Ataxia (loss of coordination), and Convulsive Seizures.

Documented Severe Outcome
Encephalopathy (Brain toxicity)
Peripheral Neuropathy (Numbness, Paresthesia)
Ventricular Fibrillation (Severe cardiac event, reported in a case)

Required Emergency Actions

If an overdose is suspected, immediate medical attention is required. Regulatory agencies mandate that individuals must contact a poison control center or emergency room at once.

  • Seek immediate emergency services if the person has collapsed, had a seizure, has trouble breathing, or can't be awakened.

Management consists exclusively of symptomatic and supportive therapy, as official labeling confirms no specific antidote is known for Metronidazole overdose. Hemodialysis is documented as a procedure that can remove significant amounts of the drug in severe cases. Patients with severe hepatic impairment face an increased risk of toxicity due to slower drug accumulation.

Therapeutic Uses of Trichozole

What Trichozole Treats: Main Uses and Benefits

Trichozole is commonly used to address infections caused by particular protozoa and anaerobic bacteria, organisms that may be relevant in conditions involving heightened physiological stress. This activity is relevant for managing conditions like Trichomoniasis, Amoebiasis, and deep-seated intra-abdominal infections. The medication is generally used to help with symptoms related to systemic imbalance or gastrointestinal discomfort.

The medication is applied across therapeutic domains involving Gynecological Infections (like Bacterial Vaginosis), Gastrointestinal Diseases (such as Giardiasis or certain C. difficile cases), and Systemic Infections (including septicemia). The therapeutic benefit is associated with helping to manage the condition, contributing to easing the symptom load that may interfere with daily functioning, like severe, persistent diarrhea or abdominal cramping.

“The medication helps address symptom clusters that may become intense or disruptive, supporting general well-being during symptomatic phases.”

Furthermore, it is relevant in clinical settings that involve acute or unstable symptom patterns, such as supportive use during certain high-risk surgical phases, and the reduction of symptoms related to inflammatory or irritative states, such as the redness and pustules seen in topical Rosacea therapy. This use provides supportive relief when symptoms interfere with routine activities.

Quick Fact: Supportive Management of Irritating Symptoms
Trichozole contributes to improved comfort in conditions presenting with distressing symptoms like abnormal discharge, foul odor, or severe intestinal cramping.

Regulatory References

  1. NIH MedlinePlus overview on Metronidazole

Eligibility and Restrictions for Use

Eligibility Map: Who can and cannot use Trichozole — Official Regulatory Information


Category Eligibility Rule (Strictly Regulatory Wording)
Populations for whom use is allowed (as stated in label) Adults and the pediatric population (use is established for specific anaerobic and protozoal infections) [FDA Metronidazole Label].
Populations for whom use is not recommended (if applicable) Pregnant women in the first trimester (use is often restricted for certain indications). Nursing mothers may need to temporarily stop breastfeeding after high doses [FDA Metronidazole Label; EMA SmPC].
Populations for whom use is contraindicated Patients with known hypersensitivity to metronidazole or other nitroimidazole derivatives. Individuals with Cockayne Syndrome (due to severe irreversible hepatotoxicity). Those who have consumed alcohol or Disulfiram within a specified period [FDA Metronidazole Label].
Age-related eligibility rules Older Adults are permitted use, though monitoring may be advised. Use in newborn infants requires caution and monitoring due to diminished elimination capacity [FDA Metronidazole Label].
Condition-specific eligibility rules Severe Hepatic Impairment (Child-Pugh C) mandates a 50% reduction in the total daily dose. End-Stage Renal Disease requires patient monitoring due to metabolite accumulation [FDA Metronidazole Label; EMA SmPC].

Eligibility Classifications (High-Level)

Classification Description
Eligibility severity classification (as defined in official documents) Contraindicated (Absolute Prohibition); Restricted/Conditional Use (Requires Dose Modification or Monitoring); Established Use (Standard Use)
Regulatory basis (EMA / FDA / etc.) Prescribing Information (US FDA) and Summary of Product Characteristics (EMA/UK MHRA)

Resulting Eligibility Structure

Official Eligibility Statements:

  • Systemic use is contraindicated in patients with a history of hypersensitivity to the drug or the diagnosis of Cockayne Syndrome.
  • The use of the medicine is restricted in patients with severe hepatic impairment (Child-Pugh C), which necessitates a regulatory-mandated dose adjustment.
  • Use is conditional in patients with end-stage renal disease or blood dyscrasias, requiring explicit clinical monitoring.
  • Pregnancy and lactation define a restricted-use status, often prohibiting use in the first trimester for some indications.

Connection to the overall eligibility profile: Regulatory documents define who can and cannot use Trichozole through clear absolute prohibitions for populations with hypersensitivity or specific genetic conditions. For all other restricted groups, eligibility is defined as conditional, mandating specific adjustments for organ impairment or heightened monitoring for conditions like Central Nervous System (CNS) disease, based strictly on official prescribing information.

What should I know about interactions with other medicines?

The official interaction profile for Trichozole (Metronidazole) is structured by two primary classifications: prohibited combinations and substances affecting drug exposure. Co-administration is strictly contraindicated with Disulfiram due to the documented risk of psychotic reactions and confusion; a mandatory separation of two weeks is required. Co-consumption of alcohol or products containing propylene glycol is also prohibited, as regulatory labels cite the risk of a severe Disulfiram-like reaction. This restriction must be maintained during therapy and for a defined period of 48 to 72 hours after the final dose.

Metronidazole is documented to affect the clearance of several co-administered medicinal products, a process categorized as pharmacokinetic interference. It potentiates the anticoagulant effect of Warfarin and can significantly increase the plasma concentrations of Busulfan (up to a two-fold rise) and Lithium. Further substances documented to increase exposure include Cimetidine, which reduces metronidazole clearance, and Ciclosporin, where a risk of elevated serum levels exists. Conversely, concurrent use of enzyme-inducing agents such as phenytoin or phenobarbital is associated with reduced plasma levels of Metronidazole. Additionally, patients with severe hepatic impairment (Child-Pugh C) exhibit impaired metronidazole clearance, a population-specific consideration that increases the official risk of drug accumulation.

Mechanism of Action

Trichozole (Metronidazole) is a prodrug that acts through a selective enzymatic activation mechanism unique to susceptible anaerobic microorganisms. Upon cellular uptake, the drug encounters low-redox-potential electron carriers (like ferredoxin) characteristic of anaerobic respiration. These proteins chemically reduce the Metronidazole molecule, generating highly unstable and toxic nitro free radical intermediates.

The presence of environmental oxygen fundamentally constrains this process, limiting the drug's action to low-oxygen environments. The reactive intermediates rapidly attack the microbial DNA, causing strand breakage and structural fragmentation. This damage impairs the microorganism's ability to maintain essential cellular functions and inhibits genetic replication and repair. This sequence of molecular events leads directly to the cytotoxic effect and the subsequent reduction of the pathogenic load.

Dosage and Administration Information

How Trichozole Is Used

The usage of Trichozole (Metronidazole) is guided by protocols that govern the route, dose, and administration schedule. It is available for oral intake (immediate- or extended-release tablets), intravenous (IV) infusion for systemic therapy, and topical or vaginal application for local treatment.

Administration Principles

Administration is context-dependent, particularly regarding dosing and timing. For treating severe anaerobic infections, systemic therapy often involves an initial IV loading dose followed by a maintenance dose of 7.5 mg/kg administered every six or eight hours. Alternatively, certain protozoal infections may be addressed with a single 2-gram dose or a short course of 250 mg to 500 mg taken multiple times daily.

Administration Constraint General Administration Guidelines
Timing with Food Immediate-release oral forms are generally taken with or after food; Extended-release tablets must be taken without food (1-2 hours before or after a meal).
IV Infusion Must be administered slowly over 30 to 60 minutes.
Physical Handling Tablets (especially extended-release) must be swallowed whole and not chewed or crushed.

Dose Adjustments and Duration

Specific dose modifications are used for certain populations. For patients with severe hepatic impairment, a dose reduction of 50% is typically recommended. In pediatric patients, dosing is based on body weight (mg/kg/day). Treatment duration is generally short-term, such as 5 to 10 days for many acute infections. Courses extending beyond 10 days are conducted under specific monitoring protocols.

Recent Clinical Evidence

Research evidence / Overview of studies for Trichozole

Evidence for Use in Protozoal Infections

Research has extensively examined the use of the medicine for conditions such as Trichomoniasis, Amoebiasis, and Giardiasis, which are caused by susceptible single-celled organisms. The evidence base includes numerous short-term Randomized Controlled Trials (RCTs) and systematic reviews that have compared its use to other therapies or placebo. The primary focus of these studies has been on measuring microbiological clearance—the laboratory confirmation that the organism is no longer detectable—and monitoring changes in outcomes related to physical discomfort.

Studies conducted during periods of increased symptom activity have reported measurements of microbiological clearance following the specified treatment duration, with data showing patterns related to this outcome in the observed populations. Findings related to patient-reported outcomes describing perceived discomfort were observed in some studies during the periods of measured organism clearance. What remains uncertain is the long-term durability of these findings. Follow-up durations were limited, typically focusing on the days or weeks immediately after treatment to confirm clearance.


Evidence for Use in Anaerobic Bacterial Infections

RCTs and large meta-analyses have explored its use in conditions caused by specific anaerobic bacteria, such as intra-abdominal and certain gynecologic infections. The research measured outcomes related to resolution of infection signs and bacteriological eradication (laboratory confirmation of bacterial elimination).

Research describes patterns where the drug, when studied as part of a combination regimen, was associated with reported measurements of clinical outcomes in polymicrobial anaerobic infections. Studies have reported how symptoms evolved in outcomes related to systemic or functional imbalance. A primary limitation is that research often involves combination regimens where the impact of the single agent can be difficult to assess. Trial data also show patterns related to measured infection rates when research examined its use for prophylaxis in surgical settings.

Key Studies & References

  1. FLAGYL® (metronidazole) tablets - US FDA Prescribing Information

Frequently Asked Questions (FAQ)

Common questions about Trichozole (FAQ)


Q: What is the main ingredient in Trichozole and how does it work?

A: The main ingredient in Trichozole is metronidazole, which is classified as an antibiotic. According to the official product information, it works by stopping the growth of certain types of bacteria and other microorganisms that cause infections. This mechanism of action helps the medicine target the infection being treated.


Q: Can Trichozole be used to treat bacterial infections?

A: Yes, regulatory documents state that Trichozole is approved for the treatment of certain serious infections caused by susceptible anaerobic bacteria. These bacteria can grow without oxygen. Studies and official information also indicate its use for a specific parasitic infection known as trichomoniasis.


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

A: Official product information generally suggests that if a dose is missed, it should be taken as soon as it is remembered, unless it is close to the next scheduled dose. However, product information always advises against taking two doses at the same time. Specific guidance for missed doses is typically outlined in the detailed patient instructions provided by your healthcare professional or pharmacist.


Q: Is it okay to drink alcohol while taking Trichozole?

A: No. Regulatory documents strongly recommend avoiding the consumption of alcohol or products containing alcohol (like certain mouthwashes) while taking Trichozole. This avoidance should also continue for at least one full day after the course of medication is completed. Combining Trichozole and alcohol may potentially cause unpleasant effects such as stomach cramps, nausea, vomiting, and flushing.


Q: Does Trichozole cause discolored urine?

A: Yes, official product information indicates that Trichozole may cause urine to become a darker color, often described as reddish-brown. This change is noted in the regulatory documents and is generally not considered clinically significant. The effect is typically temporary and resolves once the use of Trichozole is stopped.


Q: How should Trichozole be stored?

A: According to the official product information, Trichozole should be stored at room temperature. It is important to keep the medicine away from moisture and excessive heat. Regulatory guidelines also stress that the medication should be stored in a tightly closed container and kept out of the reach of children.

How should Trichozole be stored and disposed of?

How to Store and Dispose of Trichozole (Metronidazole)

Official regulatory documents define specific conditions for storing and disposing of Metronidazole (Trichozole) to maintain its stability and ensure safety.


Storage Requirements

  • Temperature: Store oral tablets and capsules at Controlled Room Temperature, typically 20 C to 25 C (68 F to 77 F), with permitted excursions up to 30 C.
  • Protection: The medication must be protected from light and stored in a tight, light-resistant container.
  • Handling: Metronidazole Intravenous Solution is explicitly required not to be frozen.
  • Child Safety: Like all medicines, the product must be kept out of the reach and sight of children, and containers should utilize a child-resistant closure.

Disposal Instructions

Metronidazole is not on the U.S. FDA’s list of medicines recommended for flushing. Unused or expired medication should be disposed of through community drug take-back programs. If a take-back option is unavailable, the medication must be mixed with an undesirable substance (such as coffee grounds) and placed in a sealed container before discarding in the household trash, in accordance with local regulations.

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

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