Tricolam

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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 Tricolam

Quick Facts

Property Description
Active ingredient Tinidazole (INN)
Form Film-coated tablet
Pharmacological class Nitroimidazole antimicrobial
General purpose Eradicating protozoa and anaerobic bacteria
Origin Synthetic

What is Tricolam and Its Core Classification?

Tricolam is a synthetic anti-infective agent for systemic use that requires a prescription. Its identity is defined by the sole active ingredient, Tinidazole, an International Nonproprietary Name (INN). This compound belongs to the Nitroimidazole antimicrobial pharmacological class. This classification defines the medicine's role in specifically targeting pathogens such as certain protozoal organisms and obligate anaerobic bacteria, distinguishing it from agents with broad activity against aerobic bacteria. The drug is typically positioned for use across various patient demographics, including adults and certain pediatric patients.


What is the General Purpose of Tricolam’s Action?

The medicine's general purpose is to neutralize and eliminate specific infectious pathogens through a mechanism of selective toxicity. Tinidazole functions as a prodrug that becomes activated predominantly within the low-oxygen environments created by susceptible microorganisms. The active substance acts against these types of microorganisms. This fundamental action helps resolve infections by causing DNA damage and inhibiting the synthesis of genetic material, which prevents the proliferation and survival of the causative agents. The drug is supplied as a film-coated tablet for oral administration, facilitating systemic delivery of the active compound throughout the body.

What side effects are possible with Tricolam?

Possible Side Effects and Safety Information

The safety profile of Tricolam (Tinidazole) is based on classifications from authoritative regulatory sources and includes adverse reactions categorized by frequency and affected body system.


Adverse Reactions Scope

Side effects are commonly observed within the Gastrointestinal Disorders (e.g., nausea, vomiting, abdominal pain) and Nervous System Disorders (e.g., headache, dizziness, metallic/bitter taste) categories.

Frequency Classification Examples of Reactions
Common Metallic taste (Dysgeusia), Nausea, Headache, Dizziness, Weakness
Rare/Frequency Not Known Convulsive seizures, Peripheral neuropathy, Severe skin reactions (e.g., Stevens-Johnson syndrome), Anaphylactic shock

Serious Safety Constraints

Official labeling mandates specific constraints and highlights severe reactions, demanding strict adherence to the drug's safety profile.

  • Alcohol Restriction: Alcoholic beverages and products containing alcohol must be avoided during therapy and for at least 72 hours after the last dose to prevent a severe disulfiram-like reaction.
  • Neurological Risk: The onset of abnormal neurological signs, such as seizures or symptoms of peripheral neuropathy (numbness, paresthesia), requires the prompt discontinuation of the medication.
  • Pregnancy and Lactation: The drug is contraindicated during the first trimester of pregnancy. Breastfeeding must be discontinued during therapy and for 72 hours following the final dose.
  • Specific Contraindication: Tricolam is contraindicated in patients with Cockayne syndrome due to the high risk of severe hepatotoxicity.

These mandated safety restrictions and classifications define the drug's risk management strategy as established by government regulators.

Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory documents on Tinidazole (Tricolam) detail the manifestations and required actions for managing overexposure. The most serious outcomes reported are associated with the Central Nervous System (CNS), which demands prompt and specific clinical attention.

Documented Overdose Manifestations

Manifestations reported in cases of acute or chronic high-dose exposure primarily involve severe neurological disturbances. These documented signs include:

  • Ataxia (lack of voluntary muscle coordination)
  • Seizures (convulsions)
  • Disorientation
  • Gastrointestinal symptoms such as vomiting

The development of abnormal neurological signs or symptoms of peripheral neuropathy necessitates immediate medical evaluation. Patients with severe hepatic disease should be noted, as they may experience slower metabolism and drug accumulation, potentially increasing the risk of severe effects.

Emergency Action Requirements

Immediate medical attention must be sought for any suspected overdose. Emergency services should be contacted immediately if the affected individual collapses, has a seizure, experiences difficulty breathing, or cannot be awakened.

Treatment of overdose is symptomatic and supportive, as no specific antidote is known. Regulatory information notes that the active substance is easily dialyzable, indicating that hemodialysis may be used as a procedure to aid in drug removal from the system.

Therapeutic Uses of Tricolam

Tricolam: Main Uses and Benefits

Quick Facts on Therapeutic Domains

  • Trichomoniasis: Used for the management of this sexually transmitted infection.
  • Giardiasis: Employed in addressing this parasitic infection of the small intestine.
  • Amebiasis: Indicated for both intestinal amebiasis and amebic liver abscess.
  • Bacterial Vaginosis: May be prescribed to manage this specific vaginal condition in adult women.

Tricolam is a medication approved for the treatment of several infections caused by specific protozoa and bacteria. It is utilized in the management of trichomoniasis, an infection caused by Trichomonas vaginalis.

In the gastrointestinal domain, Tricolam is indicated for the management of giardiasis, which is caused by Giardia duodenalis. It is also a treatment option for both intestinal amebiasis and amebic liver abscess, both of which are caused by Entamoeba histolytica. Furthermore, the medicine is approved to address bacterial vaginosis in adult women.

The use of Tricolam is determined by a healthcare professional based on the specific infection and patient profile. Full details regarding therapeutic uses and indications are established through clinical assessment and professional consultation.

Eligibility and Restrictions for Use

The official regulatory profile for Tricolam (Tinidazole) clearly defines the populations who can and cannot use the medicine, based on established eligibility and formal contraindications.

Eligibility Status Population Rule
Absolute Contraindication The medicine is contraindicated in patients with a prior history of hypersensitivity to tinidazole or related nitroimidazole derivatives. Use is strictly prohibited during the first trimester of pregnancy and in patients diagnosed with Cockayne syndrome.
Age Restrictions Use is approved for adults. Safety and efficacy have not been established for children 3 years of age and younger. Approved pediatric use is limited to children older than three years for certain protozoal infections.
Conditional Use Use in the second and third trimesters of pregnancy is conditional, requiring the potential benefit to outweigh the possible risks. Breastfeeding is not recommended during therapy and for 72 hours after the final dose.
Special Caution The label advises caution for patients with severe hepatic impairment and those with a history of blood dyscrasias or neurological disorders. For patients on hemodialysis, an additional dose is required following the procedure.

This classification structures who is eligible for the medicine and under what limitations, adhering strictly to the official statements from governmental regulatory authorities.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The following domains summarize the documented interaction profile for the active substance Triazolam (associated with Tricolam), as stated in official government regulatory documents.


Contraindicated and High-Risk Combinations

The use of Triazolam is contraindicated with potent inhibitors of the CYP3A enzyme, as these medicines significantly increase Triazolam's concentration in the body by reducing its metabolism. Examples of these strong inhibitors include certain azole antifungals (e.g., Ketoconazole, Itraconazole) and specific HIV protease inhibitors. Co-administration of opioids carries a high risk of profound sedation, respiratory depression, coma, and death. Regulatory guidance states that this combination should be reserved only for patients where alternative options are inadequate.

Other Significant Interactions

Triazolam has an additive effect when combined with other Central Nervous System (CNS) depressants, including alcohol and other sedative/hypnotics, leading to enhanced effects such as severe sedation. Concomitant ingestion of grapefruit juice is advised against because it also increases the levels of Triazolam. Medicines that affect the CYP3A enzyme to a lesser extent, such as moderate inhibitors (e.g., Diltiazem, Verapamil), require caution and patient monitoring due to the potential for increased Triazolam effects. Conversely, medicines that induce the CYP3A enzyme, such as certain anti-seizure medications, may decrease Triazolam's effectiveness.

Regulatory documents emphasize these pharmacokinetic (metabolic) and pharmacodynamic (additive effect) interactions as the primary constraints on prescribing.

Mechanism of Action

Prodrug Activation and Genetic Destruction

The drug, Tinidazole, functions as an inactive prodrug that requires chemical modification to exert its effect. This conversion occurs exclusively inside susceptible protozoa and obligate anaerobic bacteria where specific low-potential microbial enzymes, like ferredoxin, transfer electrons to the Tinidazole molecule. This reductive activation creates highly reactive intermediate molecules known as nitro radical anions. These short-lived, unstable species immediately attack the pathogen's DNA, causing irreparable damage, which directly leads to the cell death (cidal effect) of the microorganism.


Basis of Selective Toxicity

The mechanism operates via selective toxicity, utilizing the unique low-redox environment and electron-transport systems found only in the target pathogens. This requirement for low redox potential ensures that the drug is activated precisely where needed, avoiding the activation cascade in human physiological processes. This selective action confines the destructive action of the drug to the pathogenic population, which is the direct cause of the drug's systemic antimicrobial action.

Dosage and Administration Information

Tricolam, containing the active substance tinidazole, is administered by the oral route and is primarily supplied as film-coated tablets in 250 mg and 500 mg strengths. The use of this medicine involves short, fixed-duration courses, with the specific regimen determined by the indication. The medicine is taken with food to support proper administration and tolerability.

The administration of Tricolam is organized based on the condition being treated, with different durations and frequencies for trichomoniasis, giardiasis, amebiasis, and bacterial vaginosis.

For patients unable to swallow tablets, a procedure exists for the extemporaneous compounding of an oral suspension. This prepared liquid formulation maintains stability for a limited period of seven days.

Population-specific dosing is utilized for certain groups. In pediatric patients older than three years, dosing for giardiasis and amebiasis is calculated based on body weight. For patients with renal impairment, standard dose adjustments are typically not required; however, an additional dose may be utilized following a hemodialysis session.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Tricolam

The research base for Tricolam (Tinidazole) is primarily established through studies that was studied for specific infectious microorganisms, as required for regulatory context. This overview summarizes the clinical trial structure, what outcomes were monitored in the studies, and where research remains uncertain, based solely on authoritative sources.


Evidence for Use in Trichomoniasis and Giardiasis

Research examining Tricolam was studied for infections caused by Trichomonas vaginalis (trichomoniasis) and Giardia duodenalis (giardiasis) and is largely composed of short-term Randomized Controlled Trials (RCTs) and systematic reviews. Studies for both conditions were applied in research contexts involving physical discomfort and systemic imbalance, exploring how symptoms change over time.

For both protozoal infections, the primary focus of the research explored whether parasitological or microbiological findings were observed—the elimination of the organism, which is confirmed by laboratory tests. Studies also monitored outcomes related to physical discomfort, such as patient-reported outcomes describing perceived discomfort. This body of evidence has an Evidence level of High, indicating the research structure is established through controlled, comparative trials cited in official scientific literature.


Evidence for Use in Amebiasis

Tricolam was studied for both intestinal amebiasis and amebic liver abscess—conditions associated with acute or disruptive episodes caused by Entamoeba histolytica. Research has utilized a mix of controlled, comparative, and older uncontrolled clinical studies. In these research scenarios, studies explored clinical response, which relates to the observed change in symptoms like fever and abdominal pain. For the more severe condition of liver abscess, research was observed in physiological strain or stress, specifically by tracking the size of the abscess using imaging over defined time intervals to understand change.


Long-Term Studies and Durability of Response

Clinical trials for Tricolam primarily focused on short-term follow-up durations, typically ranging from one week to a few months, designed to confirm initial clearance or response. While research highlights changes measured during the study period, long-term outcomes are not fully established. Follow-up durations were limited to the short or intermediate term, leaving the consistency of the findings uncertain. For most indications, the initial studies provide limited insight into how patient-reported experiences evolve over extended periods.


What Is Still Uncertain About Tricolam Research

While the research base establishes the context for use, several limitations and gaps persist across the evidence landscape. Evidence quality varies across studies, particularly for amebiasis, where many older, less methodologically robust trials are included. The results apply only to the populations studied, and data for groups like infants, very young children, and pregnant women are still emerging or are not well characterized in the regulatory research record.

Key Studies & References

  1. Comparative efficacy of drugs for treating giardiasis: a systematic update of the literature and network meta-analysis of randomized controlled trials

How should Tricolam be stored and disposed of?

How to Store and Dispose of Tricolam

Official regulatory documents define specific storage and disposal requirements to maintain the product's integrity and safety.

Storage Conditions

Requirement Specifics
Temperature Do not store above 30 C.
Environment Keep in a dry place.
Packaging Keep in the original package.
Shelf Life Do not use after the expiry date. The documented shelf life is 36 months from the date of manufacture.
Child Safety Keep out of the sight and reach of children.

Disposal Instructions

Medicines must be disposed of properly to protect the environment. Do not throw away any medicines via wastewater or household waste. Consult a pharmacist regarding the appropriate method for throwing away medicines you no longer use. These measures will help protect the environment and comply with official waste management rules.

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

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