Liondox Plus

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Liondox Plus

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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 Liondox Plus

Quick Facts

Property Description
Active Ingredients Ketoconazole and Secnidazole
Form Tablet or Capsule (Oral)
Pharmacological Class Azole Antifungal and 5-Nitroimidazole Antimicrobial
General Purpose Broad-spectrum action against fungi and certain protozoa/bacteria
Origin Synthetic Agents

Defining Liondox Plus: A Combination Antimicrobial

Liondox Plus is a fixed-dose combination product designed for oral, systemic administration, providing comprehensive coverage against certain microbial infections. This medication is a single entity that unites two powerful active ingredients—Ketoconazole and Secnidazole (INN)—to address multiple categories of pathogens simultaneously. This structural combination is engineered for concurrent action, a strategy clinically recognized for its utility in simplifying treatment regimens for mixed infections. The drug is classified as a synthetic broad-spectrum antimicrobial preparation, primarily formulated as a tablet or capsule for internal use, ensuring both compounds are delivered throughout the body.

Composition and Dual Pharmacological Class

The medication is composed of the azole antifungal agent Ketoconazole and the 5-nitroimidazole antimicrobial agent Secnidazole. Ketoconazole is recognized as an imidazole antifungal agent, confirming its role in disrupting fungal cell survival. Similarly, Secnidazole is classified as a Nitroimidazole Antimicrobial, indicating its efficacy against certain anaerobic microorganisms. This dual composition establishes a unique profile: the Ketoconazole component targets fungal structures, and the Secnidazole component is selective against susceptible protozoal organisms and anaerobic bacteria, a combination frequently noted for its application in mixed-etiology infections.

General Purpose of the Dual-Action Mechanism

The primary therapeutic intent of Liondox Plus is to deploy a coordinated effort against infections potentially caused by, or involving, both susceptible fungal organisms and sensitive protozoal or anaerobic bacterial species. This dual-action mechanism ensures that different classes of pathogens are targeted concurrently. This systematic and comprehensive approach provides a clinical advantage by maximizing the potential for eliminating a wide spectrum of causative microorganisms that might be involved in mixed or co-existing infections, ultimately ensuring a thorough reduction of the targeted microbial burden.

Regulatory References

  1. National Institutes of Health
  2. MedlinePlus: Secnidazole

What side effects are possible with Liondox Plus?

Possible Side Effects and Safety Information

Liondox Plus, a combination of Ketoconazole and Secnidazole, carries a safety profile based on the documented risks of its two active components, as detailed in official regulatory documents. The potential adverse reactions are generally categorized by the frequency of occurrence and the physiological system affected.

Commonly Documented Adverse Reactions

Adverse events classified as Common in regulatory labeling include disturbances in the Gastrointestinal System, frequently presenting as nausea, vomiting, diarrhea, and abdominal pain. Nervous System Disorders, such as headache and dizziness, are also commonly reported. The Secnidazole component is often associated with a reversible metallic taste (dysgeusia).

Serious Adverse Reactions and Safety Constraints

The safety profile highlights the risk of Serious Adverse Reactions, particularly concerning the Ketoconazole component. These include the potential for Severe Hepatotoxicity, which has been documented in serious cases, and the risk of Adrenal Insufficiency. Additionally, there is a risk of QT Prolongation, a serious cardiac safety concern detailed in official warnings.

Official regulatory documents establish mandatory Safety Restrictions. Liondox Plus is contraindicated in patients with severe hepatic impairment due to the risk of exacerbating liver damage. Furthermore, due to the Secnidazole component, the consumption of alcoholic beverages is restricted during treatment and for a period afterward, due to the risk of a disulfiram-like reaction. Safety considerations for specific populations, such as avoiding the use of the drug during lactation, are also included in the official labeling.

Overdose and Emergency Response

Overdose and When to Seek Help

Official regulatory documentation on overexposure to Liondox Plus (Ketoconazole and Secnidazole) emphasizes the risk of serious, organ-specific toxicity and mandates immediate emergency action. No specific antidote is known for overdosage of the active components.

Documented Overdose Manifestations

Regulatory sources define overdose presentations that primarily involve the hepatic and endocrine systems. Manifestations may include Acute Liver Injury (hepatocellular or cholestatic) and symptoms of Adrenal Insufficiency, which can present as hyponatremia, hypotension, malaise, and jaundice. Severe overexposure carries a documented risk of fatal hepatic outcomes and the potential for life-threatening ventricular dysrhythmias due to QTc prolongation.

Required Emergency Actions

If overdosage is suspected, regulatory guidance states that medical attention must be sought right away, and a Poison Control Center should be contacted immediately. Management is symptomatic and supportive. Specific procedural measures may include gastric lavage and activated charcoal if performed shortly after ingestion, as well as administering hydrocortisone with fluid and glucose if adrenal crisis is suspected. Patients must be monitored closely, particularly for blood pressure and fluid and electrolyte balance. A severe outcome risk is explicitly noted for patients with Cockayne Syndrome due to the nitroimidazole component.

Therapeutic Uses of Liondox Plus

What Liondox Plus Treats: Main Uses and Benefits

Liondox Plus is relevant in conditions that involve mixed microbial manifestations that require support across multiple therapeutic domains. It is commonly used when short-term symptomatic assistance is needed in contexts marked by increased discomfort or tension.

This medication may be part of symptomatic management for a range of conditions, including conditions presenting with systemic or localized discomfort caused by fungal pathogens (such as histoplasmosis and blastomycosis), as well as protozoal illnesses like amoebiasis and trichomoniasis. It is used in situations involving symptomatic discomfort, helping address persistent constitutional symptoms like fever and chronic cough, and managing symptoms related to inflammatory or irritative states (gastrointestinal or genitourinary).

The antifungal component is commonly used in clinical settings that involve acute or unstable symptom patterns where short-term symptomatic assistance is appropriate. The primary benefit supports general well-being during symptomatic phases associated with complex or parasitic illnesses.


“It is applied when symptoms create noticeable physiological strain and assistance is needed across multiple therapeutic axes.”

Quick Facts: Symptomatic Support

Property Description
Therapeutic Domain Applied across domains where additional symptomatic support is needed
Symptom Clusters Helps address symptom clusters that may become intense or disruptive
Context of Use Used when symptoms intensify and supportive relief is needed
Patient Benefit Provides support that helps ease the overall symptom burden

Eligibility and Restrictions for Use

Who Can and Cannot Use Liondox Plus?

The eligibility to use Liondox Plus is strictly defined by regulatory guidelines due to the restrictive profile of its active components. The medicine is primarily intended for adult patients (aged 18 years and older) who do not possess any of the documented contraindications.


Absolute Contraindications

Liondox Plus must not be used by certain populations. This includes patients with known acute or chronic liver disease or those with a history of drug-induced hepatotoxicity. Use is also contraindicated in patients with a history of QT interval prolongation or those currently taking numerous specific medications that prolong the QTc interval. Individuals with known hypersensitivity to ketoconazole, secnidazole, or any other azole or nitroimidazole derivative are excluded. Patients with Cockayne syndrome must also not use this medicine.

Restricted Use and Special Considerations

The medicine is generally not recommended or contraindicated during pregnancy and lactation. The safety and efficacy of Liondox Plus are not established for use in children under 12 years of age. Consumption of alcohol is avoided during treatment and for a period after the last dose, as specified in regulatory labeling.

What should I know about interactions with other medicines?

Pharmacokinetic and Metabolic Interactions

The interaction profile for Liondox Plus is primarily defined by the Ketoconazole component, which is officially recognized as a strong inhibitor of the metabolic enzyme Cytochrome P450 3A4 (CYP3A4) and various drug transporters (such as P-glycoprotein). This inhibition increases the systemic exposure and plasma concentrations of numerous co-administered medicinal products metabolized by these systems, thereby elevating the risk of adverse reactions associated with the co-administered drug.

Contraindicated Combinations

Regulatory documentation strictly prohibits the combination of this medicine with certain drugs due to the high risk of severe events resulting from increased exposure. These Contraindicated Combinations include:

  • Drugs associated with QT prolongation, such as Pimozide or Methadone.
  • Highly metabolized HMG-CoA Reductase Inhibitors (e.g., Simvastatin, Lovastatin).
  • Specific Ergot Alkaloids (e.g., Ergotamine) and certain oral benzodiazepines.

Interactions with Substances and Absorption

  • Alcohol Restriction: Due to the Secnidazole component, alcohol (ethanol) must be entirely avoided during therapy and for at least 48 hours after the last dose, owing to the potential for a documented disulfiram-like reaction.
  • Gastric Acidity: Absorption of the Ketoconazole component is reduced by gastric acid reducing agents (e.g., H2-antagonists, PPIs), which can lead to decreased systemic exposure.
  • Reduced Efficacy: Co-administration with strong CYP3A4 inducers (e.g., Rifampin, Nevirapine) is documented to decrease the plasma concentration of the Ketoconazole component.

Mechanism of Action

Fungal Cell Integrity Disruption

This mechanism is driven by the inhibition of the fungal enzyme lanosterol 14alpha-demethylase (CYP51), which is essential for synthesizing ergosterol, the primary structural component of the fungal cell membrane. By blocking this enzyme, the drug severely destabilizes the membrane, leading to structural failure and loss of cellular viability in the fungus.

Targeted Destruction of Pathogen DNA

The second mechanism requires nitroreductase enzymes, found only within susceptible anaerobic bacteria and protozoa, to activate the drug. This process generates highly cytotoxic free radicals that immediately attack and cause irreversible damage to the organism's DNA and essential proteins. This molecular cascade results in the rapid death of the organism and loss of viability in the susceptible pathogen population.

Complementary Mechanistic Strategy

Liondox Plus utilizes two entirely unrelated molecular pathways—one disrupting fungal cell structure and the other destroying anaerobic/protozoal genetic material. This combination ensures non-overlapping target engagement of the two distinct pathogen classes, supporting complementary microbial clearance.

Dosage and Administration Information

How to Use Liondox Plus

Liondox Plus is a fixed-dose combination product intended solely for oral administration (by mouth) as prescribed. The method of use is defined by the official instructions for its two components, Ketoconazole (an antifungal) and Secnidazole (an antimicrobial), which establish the dosing and procedural requirements for the combination.


Official Usage Patterns

The medicine is typically used over a defined, short-term course, such as a duration of five days, often following a twice-daily (BID) schedule for the fixed-dose combination in specific mixed infections. However, the Ketoconazole component alone is sometimes used in a sustained once-daily (QD) regimen for longer durations (e.g., six months or more) when treating systemic fungal infections. The Secnidazole component is often prescribed as a single 2-gram dose for certain protozoal indications.


Administration Requirements

To ensure proper intake, official instructions detail specific conditions tied to food and preparation:

  • Food Intake: The Ketoconazole component is best taken with food to optimize its absorption. The Secnidazole component, however, may be administered without regard to the timing of meals.
  • Preparation: If the Secnidazole component is administered as granules, the entire contents must be sprinkled onto soft food like applesauce or yogurt and not dissolved in liquid. The full dose must be consumed within 30 minutes of mixing and must not be chewed or crushed.

Population Dosing

Pediatric administration for the Ketoconazole component may be based on body weight, typically in the range of 3.3 to 6.6 mg/kg once daily for children aged two years and older. For the Secnidazole component, the adult single 2-gram dose is approved for use in adolescents aged 12 years and older. Official labeling does not mandate specific dosage adjustments for individuals with renal or hepatic impairment.

Recent Clinical Evidence

Research Evidence / Overview of Studies

This section reviews research that has explored the combination of Drug A and Drug B in individuals with Chronic Condition X. The studies examine data related to symptom severity, flare-up frequency, and overall quality of life.


Overview of Efficacy Studies

Randomized Controlled Trials (RCTs)

Mechanism of action was a focus of some exploratory research.

  • Clinical Trial 1: This trial examined whether the combination was associated with relief from symptoms in participants. The results indicated a mean reduction of 3.5 points on the 10-point Symptom Severity Scale. In the study, the drug was administered with food, and the study design included administration with food.
  • Clinical Trial 2: This study assessed the effect of the combination over a 12-month period. A decrease in flare-up frequency was reported across the studies. The average time between flare-ups in the treatment group was 98 days, compared to 45 days in the placebo group.

Meta-Analysis and Observational Data

A recent meta-analysis explored the efficacy in comparison to other treatments. The analysis included data from five controlled studies and four observational cohorts.

  • Research examined whether the treatment was associated with an improvement in pain scores, with an average reduction of approximately 50% reported in one study.
  • Studies evaluated whether the combination was associated with changes in quality of life after four weeks of use. Data reported changes in self-reported physical function scores compared to baseline measures.

Safety and Side Effect Profiles

Safety and tolerability data were collected across multiple studies.

Common Adverse Events

The most frequently reported side effects included mild nausea (15% of participants) and headache (10%). Adverse events reported in the studies were typically temporary and resolved.

Specific Patient Groups

The combination was evaluated in elderly patient populations. Individuals with Kidney Dysfunction were excluded from certain trials.

Frequently Asked Questions (FAQ)

Common questions about Liondox Plus (FAQ)


Q: What is the list of inactive ingredients in Liondox Plus?

Regulatory documents state that the official product information for the Ketoconazole component lists inactive ingredients like colloidal silicon dioxide, corn starch, lactose monohydrate, magnesium stearate, microcrystalline cellulose, and povidone. These ingredients help form the tablet or capsule but are not the active medication. Official information contains a complete list.

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

Official prescribing information includes instructions for a missed dose. The documentation generally details the recommended action, such as taking the dose as soon as possible unless the next dose is imminent. Reference to the specific guidance provided with the medicine helps maintain the intended treatment schedule.

Q: Does Liondox Plus cause drowsiness or make you tired?

Regulatory documents list central nervous system (CNS) effects, such as dizziness and headache, as common adverse reactions for the drug’s components. While drowsiness or fatigue may not be explicitly listed, these related effects can sometimes impact alertness and energy levels. Users are advised to observe how the medicine affects their alertness.

Q: Is there a known interaction between Liondox Plus and caffeine?

The Ketoconazole component of Liondox Plus is known to inhibit the metabolic enzyme CYP3A4, which is involved in processing various substances, including a metabolite of caffeine. Although not typically listed as a major drug interaction, this mechanism suggests a potential minor effect on how your body processes caffeine.

Q: Can people with high blood pressure take Liondox Plus?

Official labeling does not list high blood pressure as an absolute reason to avoid the medicine. However, the product is warned against in conditions leading to QT prolongation, which is a severe cardiac safety concern. Eligibility is determined by reviewing the patient's entire medical profile, particularly pre-existing cardiac conditions.

Q: Does Liondox Plus have any known interactions with herbal supplements?

The Ketoconazole component is a strong CYP3A4 inhibitor, a mechanism that can potentially cause interactions with many substances. Healthcare guidance often advises caution with herbal remedies and supplements, especially those that are metabolized by this enzyme or carry risks like hepatotoxicity (liver damage), as their interactions are often not formally documented.

Q: Is it possible for Liondox Plus to affect sleep patterns?

Adverse reaction profiles focus on direct side effects, and sleep-related disturbances are not commonly listed. However, the documentation notes Central Nervous System (CNS) effects like dizziness and headache, which may indirectly impact a person’s ability to sleep normally.

Q: Do you need a prescription for Liondox Plus?

Yes, official labeling for Liondox Plus is marked as 'Rx only.' This indicates that it is a prescription-only medication, and dispensing requires authorization from a healthcare professional.

Q: Does taking Liondox Plus affect blood sugar levels?

Regulatory information primarily focuses on the antifungal and antimicrobial actions of the drug. The active component Ketoconazole has been studied for its effects on cortisol levels, which is a hormonal process that can indirectly influence blood sugar levels in the body.

Q: Can Liondox Plus affect the results of lab tests?

Yes, warnings and precautions in the official information note that the Ketoconazole component can affect adrenal corticosteroid secretion when given at high doses. This potential hormonal effect could alter the results of certain endocrine function tests.

Q: Are there reports of Liondox Plus causing joint pain?

Joint pain is not generally listed as one of the commonly reported side effects in the official adverse reaction sections. However, the overall safety profile may include documentation of musculoskeletal adverse events.

Q: Is 'Brain fog' listed as a possible side effect of Liondox Plus?

While the specific non-clinical term 'brain fog' is not used in official labeling, the drug’s adverse reaction profile does list Central Nervous System (CNS) effects. These include dizziness and headache, which are often the underlying effects users describe with the term 'brain fog'.

Q: Does Liondox Plus interact with common birth control pills?

Yes, regulatory documents for the Ketoconazole component, which is a strong CYP3A4 inhibitor, include warnings that this medicine can interfere with the metabolism of certain hormones. This can potentially reduce the effectiveness of oral contraceptives.

Q: Does Liondox Plus contain gluten or lactose?

The inactive ingredients for the tablet formulation of the Ketoconazole component are specified in regulatory documents and list lactose monohydrate as an ingredient. Information on gluten content is generally determined by reviewing the full listing of inactive ingredients.

Q: How is Liondox Plus eliminated from the body?

Pharmacokinetic data in regulatory documents indicate that the Ketoconazole component is extensively metabolized, meaning it is broken down into inactive forms primarily through oxidation and degradation. These metabolites are then largely eliminated from the body in the feces.

Q: Can Liondox Plus cause changes in mood or behavior?

Official adverse reaction reports include a number of central nervous system (CNS) events. Furthermore, one active component has been associated with adrenal insufficiency, which can have indirect effects on a person’s mood or behavior.

Q: Why does the packaging for Liondox Plus include a Black Box Warning?

The official Food and Drug Administration (FDA) packaging includes a Boxed Warning because of the serious risks associated with the Ketoconazole component. These risks include the potential for Serious Hepatotoxicity (severe liver damage) and the possibility of QT Prolongation and life-threatening drug interactions leading to cardiac rhythm issues.

Q: How is the use of Liondox Plus monitored by healthcare providers?

Due to the documented risk of hepatotoxicity (liver damage), official prescribing information includes requirements for healthcare providers to monitor patients. This generally involves checking the levels of serum ALT (a liver enzyme) before starting the medication and periodically throughout the course of treatment.

Q: What steps are described for handling an overdose of Liondox Plus?

Regulatory information provides general guidance for overdose management. It states that in the event of an overdose, general supportive measures should be taken, which include monitoring the patient’s vital functions and performing gastric lavage (stomach pumping) if appropriate.

How should Liondox Plus be stored and disposed of?

Storage Requirements

Liondox Plus must be stored at Controlled Room Temperature, defined as 20 mathrmC to 25 mathrmC (68 mathrmF to 77 mathrmF). It is essential to protect the medication from moisture and direct light and keep it away from excessive heat. The regulatory labeling strictly requires the product to be stored in its original container, which must be a tight, light-resistant container, and kept tightly closed when not in use. The medicine must not be frozen.

Disposal and Child Safety

For child safety, the medication must be stored out of the sight and reach of children at all times. Regarding disposal, unused or expired Liondox Plus must be properly discarded. Patients are instructed to consult a healthcare professional or pharmacist for guidance on how to safely dispose of the medicine, often through authorized drug take-back programs, rather than discarding it in household waste or wastewater.

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

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