It-MAC

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It-MAC

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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 It-MAC

Quick Facts

Property Description
Active ingredient Itraconazole, Macrogol 400
Form Oral Capsules
Pharmacological Class Broad-spectrum Azole Antifungal
General Purpose Systemic therapy for fungal infections
Origin Synthetic (Triazole derivative)

Defining It-MAC: A Systemic Antifungal Capsule

It-MAC is a pharmaceutical preparation classified as a broad-spectrum azole antifungal agent, used for systemic therapy against fungal infections. It is a synthetic triazole derivative, which is a high-level pharmacological classification. The triazole class is used in managing diverse mycoses. The medicine is supplied as oral capsules, meaning the drug must be swallowed and absorbed into the bloodstream to treat the infection internally, such as a persistent fungal infection of the nail or internal organs.


Core Composition and Mechanism Principles

The composition of It-MAC features the primary therapeutic agent, Itraconazole, combined with the functional excipient Macrogol 400. This combination product is engineered to address the inherent low solubility of Itraconazole. The excipient acts as a specialized solubilizing agent to facilitate reliable absorption into the body. This formulation feature is clinically recognized for optimizing the bioavailability of the drug, ensuring a more predictable amount of the therapeutic agent enters the circulation following oral administration.

Itraconazole works by blocking the production of ergosterol, which is an essential structural component of the fungal cell membrane. This mechanism works to halt the spread of the fungal organism. This action defines It-MAC's general therapeutic role in controlling and clearing persistent infections that require systemic intervention.

Regulatory References

  1. NIH: Itraconazole Pharmacokinetics and Absorption
  2. NIH: Itraconazole Mechanism of Action

What side effects are possible with It-MAC?

Possible Side Effects and Safety Information

The safety profile of It-MAC (Itraconazole) is defined by official regulatory documentation, which organizes potential adverse reactions by frequency and affected body system.

Frequency-Classified Adverse Reactions

Adverse events are categorized according to their reported frequency in regulatory data, such as those from the FDA and EMA:

Frequency Example Adverse Reactions (Label-Based)
Very Common Hypertriglyceridemia
Common Headache, Dizziness, Nausea, Vomiting, Diarrhea, Edema, Rash, Hypokalemia, Abnormal Hepatic Function
Uncommon Hypersensitivity, Paresthesia, Visual disturbances

Serious Adverse Reactions and Safety Constraints

The official labeling highlights risks of serious reactions, which are classified as rare but clinically significant:

  • Congestive Heart Failure (CHF): It-MAC is generally contraindicated for non-life-threatening conditions like onychomycosis in patients with ventricular dysfunction or a history of CHF.
  • Hepatotoxicity: Cases of serious liver toxicity, including fatal acute liver failure, have been reported, sometimes occurring within the first month of treatment. Liver function monitoring may be considered.
  • Severe Dermatological Reactions: These include official documentation of events such as Stevens-Johnson Syndrome (SJS).

Peripheral Neuropathy has been reported, predominantly during long-term treatment, and treatment discontinuation is warranted if this occurs. Furthermore, use in pregnant patients for non-life-threatening indications is officially contraindicated.

Overdose and Emergency Response

The official regulatory documents provide limited clinical information regarding acute It-MAC overdose, but they mandate immediate emergency action due to the high risk of severe systemic toxicity. Seek immediate medical attention or contact emergency services immediately if an amount greater than prescribed is taken. This urgency is required because overdose may lead to life-threatening outcomes affecting the cardiac and hepatic systems.

Regulators explicitly warn that excessive exposure carries the risk of serious hepatotoxicity, including liver failure, and severe ventricular tachyarrhythmias, such as torsades de pointes. Overdose manifestations are expected to align with severe adverse reactions, including nausea, vomiting, abdominal pain, dizziness, and somnolence. Toxic plasma trough concentrations have been reported as being over 3 mcg/mL.

For managing an overdose, supportive measures must be initiated immediately, as there is no known specific antidote for itraconazole poisoning. Furthermore, the drug is not removed by dialysis. Monitoring for signs of congestive heart failure and hepatic dysfunction is a critical component of professional medical management. Patients with existing cardiac, renal, or hepatic impairment are noted to have an increased risk of severe outcomes.

Therapeutic Uses of It-MAC

What It-MAC Treats: Main Uses and Benefits

It-MAC is a systemic antifungal used to provide necessary supportive action against infections that may be too entrenched or widespread for topical therapies. It is applied across therapeutic domains where its supportive role offers symptomatic relief for patients. The medication is commonly used to help with managing serious fungal or yeast infections in the lungs that can spread throughout the body, such as invasive aspergillosis, histoplasmosis, and cryptococcosis.

Managing Deep-Seated and Chronic Fungal Conditions

It-MAC plays a role in managing systemic mycoses and extensive mucocutaneous infections, including refractory onychomycosis (fungal nails) that have resisted non-systemic treatments. This application is relevant in contexts involving heightened systemic burden and helps address symptom clusters that may become intense or disruptive, such as persistent fever or chronic nail thickening. This contributes to supportive disease management in conditions marked by increased physiological stress.

The medication is also used in high-risk clinical scenarios, such as in immunocompromised patients or for maintenance therapy to prevent the recurrence of severe fungal disease. This use supports the patient during difficult episodes by easing distress and contributing to easing the overall symptom load.

Quick Fact: Symptom Management with It-MAC
Therapeutic Scope Systemic management of entrenched fungal pathogens in organs and deep tissues.
Primary Benefit Helps support the process of managing disease progression and achieving symptomatic resolution.
Use Context Applied when infections are widespread, chronic, or affect immunocompromised patient groups.

Regulatory References

  1. NIH MedlinePlus overview of Itraconazole

Eligibility and Restrictions for Use

It-MAC (Itraconazole macro-capsule) is an oral antifungal medication used to treat various fungal infections. Its suitability depends on the patient's existing medical conditions and concurrent medications.

Who Can Use It-MAC?

It-MAC is typically prescribed for individuals requiring treatment for systemic fungal infections such as aspergillosis, histoplasmosis, or blastomycosis, and certain localized fungal infections, including those affecting the nails (onychomycosis) and skin. A healthcare provider will determine if the potential benefits outweigh the risks based on a thorough medical evaluation.

Who Cannot Use It-MAC? (Contraindications)

It-MAC is contraindicated in patients with a known allergy to itraconazole or other azole antifungals. It should not be used in patients with evidence of ventricular dysfunction or a history of congestive heart failure (CHF) due to the potential for worsening the condition. The medication is generally avoided in pregnant women (especially during the first trimester) and is not recommended during breastfeeding.

Specific diseases and conditions require careful consideration and may preclude use:

Condition
Congestive Heart Failure (CHF) or ventricular dysfunction
Known allergy to itraconazole or related azoles
Pregnancy and breastfeeding

Furthermore, numerous drug interactions exist, and co-administration with certain medications, including specific cholesterol-lowering drugs (statins), antiarrhythmics, and some benzodiazepines, is strictly contraindicated as it can lead to serious adverse effects.

What should I know about interactions with other medicines?

Interactions with other medicines and products

The interaction profile for It-MAC is primarily defined by the drug's activity as a potent CYP3A4 inhibitor, a pharmacokinetic mechanism documented to significantly increase the plasma concentrations of co-administered medicines metabolized by this pathway. This interaction is the basis for several strict contraindicated combinations listed in regulatory documents, including antiarrhythmics (e.g., dofetilide, quinidine), specific statins (e.g., lovastatin, simvastatin), and certain psychotropics (e.g., pimozide, lurasidone). Co-administration with these drugs is officially prohibited due to the risk of serious or life-threatening adverse events.

Conversely, Itraconazole exposure is subject to modification by other substances. Strong CYP3A4 inducers like rifampicin and St. John's Wort are documented to cause a substantial decrease in Itraconazole plasma levels, necessitating a not recommended classification and a two-week separation after discontinuing the inducer. Furthermore, the absorption of the capsule formulation is officially dependent on an acidic environment, which requires that antacids or other gastric acid reducers be administered at least two hours before or two hours after the Itraconazole capsule to mitigate reduced drug exposure. The profile also notes that patients with hepatic impairment (cirrhosis) exhibit a documented reduction in the drug’s peak concentration and an increase in its elimination half-life, altering the overall pharmacokinetic interaction potential. Finally, the regulatory guidance notes an official risk of additive negative inotropic effects when co-administered with calcium channel blockers.

Mechanism of Action

How It-MAC Works: Mechanism of Action

It-MAC acts by specifically inhibiting the fungal enzyme cytochrome P450 14alpha-demethylase (CYP51). This enzyme is critical for a single, essential step in the organism's ergosterol synthesis pathway, which is required for building its cellular structure. This enzymatic interference is the first key step in the cascade that produces the resulting physiological changes.

Blocking the CYP51 enzyme prevents the synthesis of normal ergosterol and causes the accumulation of toxic, abnormal sterols within the cell. The incorporation of these faulty materials destabilizes the cell membrane, making it excessively permeable and structurally unsound. This leads directly to the loss of cellular integrity, which is the mechanism by which the drug modulates fungal cell structure.

The resulting structural damage and loss of cellular function ultimately inhibit the organism's ability to grow, divide, and spread. By compromising the fundamental stability of the fungal cell, the drug limits its propagation. This physiological consequence is central to the mechanism's overall effect on fungal cell viability.

Dosage and Administration Information

How to Use It-MAC: Administration Guidelines

This section outlines the administration and dosing instructions for It-MAC. This information is descriptive and does not constitute medical advice or therapeutic recommendations.

Dosing and Route of Administration

It-MAC is approved for administration via two routes: Oral (capsules/tablets) and Intravenous (IV) Infusion (injection solution).

Component Instruction (Standard Adult Dose)
Standard Oral Dose 200 mg once daily.
IV Loading Dose 200 mg every 12 hours for the first 4 doses.
Renal Impairment Dose adjustment to 50 mg once daily for severe impairment.

Administration Requirements and Procedures

Specific instructions are required for proper use:

  • Oral Intake: The oral capsule form must be taken with a full meal to ensure adequate absorption. Capsules must be swallowed whole and must not be crushed, opened, or chewed.
  • IV Preparation: The injection solution must be diluted in 50 mL of 0.9% Sodium Chloride Injection before use.
  • IV Infusion Rate: The diluted solution must be administered via slow IV infusion over a minimum period of 60 minutes. The rate must not exceed 20 mg/ minute and must not be given as a rapid bolus.
  • Missed Doses: If a dose is missed, patients should take the next scheduled dose at the regular time; doubling up on doses to compensate is not advised.

Recent Clinical Evidence

Research Evidence / Overview of Studies for It-MAC

Research Evidence for Managing Systemic Fungal Diseases

Itraconazole (the active component in It-MAC) was studied for use in systemic fungal diseases such as invasive aspergillosis and histoplasmosis. For these serious conditions, research often involves non-blinded studies (where patients and researchers know the treatment) and prospective observational data. The populations studied in this research explored patients with compromised immune systems, such as those who have received organ transplants or those undergoing treatment for hematologic malignancies.

In these research settings, studies monitored outcomes such as clinical and radiological response rate, the status of the fungal infection clearance (microbiological eradication), and overall survival metrics. Researchers sought to document the patterns of symptoms and fungal status observed over defined treatment intervals, which often spanned several months. For conditions like histoplasmosis, the evidence base includes older randomized clinical trials that examined outcomes reflecting daily functioning and measurements of mycological response.

Evidence for Prophylactic Use in High-Risk Patients

Research has also explored evidence that investigated patterns related to the incidence of specific fungal infections in high-risk groups. This includes large meta-analyses that synthesize data from multiple randomized controlled trials focused on patients with neutropenia (low white blood cell counts) due to chemotherapy for blood cancers.

In these prophylactic studies, research examined core outcomes such as the incidence of proven invasive fungal infections (IFI) and mortality rates associated with IFI. Research reported patterns observed during the study period, with analyses documenting differences in incidence rates of proven IFI between the group receiving Itraconazole and the control group.

Clinical Trials for Chronic Superficial Infections (Onychomycosis)

For chronic, extensive fungal nail infection (onychomycosis), the evidence primarily consists of numerous Randomized Controlled Trials (RCTs). These studies were generally conducted with immunocompetent adults who were managing long-standing nail fungal disease. Studies explored the rates of achieving a complete clinical and mycological response (defined as full clearance of the nail). Research highlighted changes measured during the study period, with trials reporting varying rates of complete response at designated follow-up checks, which typically occurred 6 to 12 months post-treatment.

Areas of Ongoing Research and Uncertainty

Several key research limitations and gaps have been documented. Comparative evidence is lacking for direct, head-to-head comparisons of Itraconazole against currently utilized treatments in recent trials. Also, a known area of uncertainty relates to the different drug formulations; specifically, variations in drug absorption linked to different capsule formulations complicate the generalization of results across all products.

Key Studies & References Treatment of Onychomycosis: A Review of the Evidence

Frequently Asked Questions (FAQ)

Common questions about It-MAC (FAQ)


Q: Can It-MAC be taken with common over-the-counter pain relievers?

A: Official regulatory documents primarily detail interactions with prescription drugs that affect the body's metabolism, particularly those processed by the CYP3A4 enzyme, or medicines that affect stomach acidity. Official information does not specifically list every single over-the-counter (OTC) pain reliever. General interaction warnings about CYP3A4 inhibition and reduced absorption with antacids are described in the product information and relate to co-administered medicines.

Q: Are there any specific lifestyle changes that are recommended while using It-MAC?

A: Regulatory documents explicitly require the capsule form to be taken with a full meal to ensure proper absorption. Additionally, the official product information notes that if a patient experiences adverse reactions such as dizziness or blurred vision, caution is indicated regarding activities like driving or operating machinery.

Q: Is It-MAC the first-line treatment for the condition, or is it used later?

A: Official regulatory documents list the specific conditions (indications) for which It-MAC is approved, such as certain systemic fungal infections and infections of the nail. While one indication is for specific conditions in patients intolerant of other treatments, official prescribing information generally describes the approved use rather than definitively categorizing it as first-line or second-line treatment across all indications.

Q: Is It-MAC approved for use in children or teenagers?

A: Official regulatory documents contain a Pediatric Use section that addresses prescribing for children and teenagers. For some specific, life-threatening infections, regulatory documents describe use in pediatric patients. However, the capsule form is often not recommended for the treatment of non-life-threatening conditions in pediatric patients.

Q: Is It-MAC a controlled substance?

A: The active ingredient in It-MAC, Itraconazole, is classified by relevant authorities as a Legend Drug (meaning it requires a prescription) but is not designated as a federally Controlled Substance in the United States or under similar international regulatory schedules.

Q: Can older adults safely use It-MAC?

A: Regulatory documents mention that prescribers should consider that older adults may have decreased function in organs like the liver or kidneys, and a higher prevalence of concurrent medications that could interact with the drug. Official advice is based on a benefit/risk assessment by the prescriber, taking into account any pre-existing health issues.

Q: What age group was It-MAC primarily studied in?

A: The clinical trials that formed the basis for regulatory approval primarily included adult populations, typically ranging from 18 to 65 years of age. Research evidence often notes the inclusion of adult populations for major indications like systemic fungal diseases.

Q: What happens if I accidentally take more It-MAC than prescribed?

A: Official regulatory documents indicate that in the event of an accidental overdose, immediate medical assistance is necessary, and supportive measures are described for use by medical professionals. The official guidance also notes that the drug Itraconazole is not removed by dialysis.

Q: Is there a different dosage of It-MAC for people with liver issues?

A: Regulatory documents note that the drug is mainly processed by the liver, and exposure may be reduced in patients with hepatic impairment (liver issues). For these patients, cautious use and monitoring are generally described, and official guidance notes that dose adjustments may be necessary based on medical evaluation.

Q: Is It-MAC something you have to take forever, or just for a short time?

A: The required duration of use is defined in the official dosing regimen and varies greatly depending on the infection being treated. For localized infections, treatment may be for a few months or a pulse regimen, while for serious systemic infections, treatment duration is often longer and may span several months.

Q: How quickly does It-MAC start to have its intended effect?

A: Regulatory pharmacokinetics data indicate that the drug and its active metabolite accumulate in the body over time. Steady-state plasma concentrations, which is the stable and effective concentration in the body, are generally reached after about 15 days of repeated dosing.

Q: Can It-MAC cause me to feel dizzy or lightheaded?

A: Yes, regulatory safety information lists Dizziness as a Common adverse reaction. The safety documentation also mentions lightheadedness as a possible symptom associated with the rare but serious adverse event of congestive heart failure. Patients experiencing these effects should exercise caution.

Q: What is the most common reason people stop using It-MAC?

A: While the official label lists all known side effects, it describes specific conditions that may be considered reasons to stop using the drug. These events include the onset of Peripheral Neuropathy (nerve damage), signs of liver dysfunction (hepatotoxicity), or hearing loss.

Q: Is It-MAC safe to use if I have a history of kidney problems?

A: Official documents specify that for patients with severe renal impairment (significant kidney problems), a dose adjustment (reduction) is required. Regulatory guidance for all use is based on a benefit/risk assessment by the prescriber, considering any pre-existing organ issues.

Q: Can It-MAC affect my ability to drive or operate machinery?

A: Official documentation advises that the possibility of adverse reactions such as dizziness, visual disturbances, and hearing loss should be considered. Patients who experience these specific effects are generally advised to avoid driving or operating machinery.

Q: Are there any long-term effects of using It-MAC that I should be aware of?

A: Peripheral Neuropathy (nerve damage) is specifically reported in patients who have been on long-term therapy with the drug. The official guidance states that treatment discontinuation is warranted if symptoms of neuropathy occur.

Q: What is the success rate described in the studies for It-MAC?

A: Regulatory documents avoid stating a single, fixed 'success rate' as outcomes vary widely. Instead, they present response rates or mycological eradication rates for specific indications, such as onychomycosis, as observed in the clinical trials that supported approval. These rates are reflective of a specific study population and are not fixed guarantees.

Q: Does It-MAC change how my body processes alcohol?

A: While official regulatory documents do not specify a direct pharmacokinetic interaction with ethanol, general patient guidance from authoritative sources often recommends caution. This is primarily due to the potential for the drug to cause liver toxicity (hepatotoxicity), which may be compounded by the consumption of alcohol.

Q: Does It-MAC affect fertility in men or women?

A: Official documents contain strict contraindications for use in pregnant patients for non-life-threatening conditions due to risks demonstrated in animal studies. For fertility specifically, animal studies have indicated effects on the reproductive system, which regulatory bodies consider during their evaluation.

Q: Can I stop taking It-MAC suddenly, or do I need to taper off?

A: Official instructions outline a defined course of treatment that must be completed to effectively clear the infection and prevent future problems. The regulatory documents describe the importance of completing the full course of treatment as prescribed to help prevent the risk of the infection recurring or developing antifungal resistance.

Q: Can It-MAC cause changes in my weight?

A: Edema (swelling or fluid retention), which can be associated with weight gain, is listed as a Common adverse reaction in the official safety profile. Significant, rapid weight gain can also be a symptom of more serious adverse events, such as congestive heart failure.

Q: Why do some people feel sleepy when they start taking It-MAC?

A: Official safety data lists Somnolence (sleepiness or drowsiness) as an adverse reaction that has been reported. Additionally, Dizziness is listed as a Common adverse reaction, which can contribute to a general feeling of being 'foggy' or unwell in some individuals.

Q: Does It-MAC cause changes to skin or hair?

A: Yes, the official safety profile lists Rash as a Common side effect. More serious, but rare, dermatological reactions are also noted. Separately, Alopecia (hair loss) is also listed as an adverse event reported during use.

Q: What is the half-life of It-MAC according to pharmacokinetics data?

A: Regulatory pharmacokinetics data show that the terminal elimination half-life of Itraconazole is approximately 34 to 42 hours with repeated dosing. This half-life is the time it takes for half of the drug to be eliminated from the body.

Q: Are there different forms of It-MAC (e.g., tablet, liquid)?

A: The active ingredient, Itraconazole, is available in several forms across jurisdictions, including oral capsules (such as It-MAC), an oral solution (liquid), and in some regions, specific tablet formulations. The required way to take the drug differs depending on the specific formulation.

Q: How often do serious side effects from It-MAC occur?

A: The regulatory documents classify adverse events by frequency. Serious side effects like Congestive Heart Failure and Hepatotoxicity (liver damage) are generally described as rare but clinically significant, and their exact frequency is often reported as not specified due to being observed primarily in post-marketing experience.

Q: If I feel better, can I reduce my dose of It-MAC?

A: Regulatory documents state that official dosing instructions and the duration of treatment are set to ensure the infection is completely cleared. The label does not include authorization for a patient to unilaterally adjust or reduce the prescribed dose.

Q: What should I do if the side effects of It-MAC are bothering me?

A: Official patient counseling information describes that a healthcare provider should be contacted, or emergency medical help should be sought immediately, if a person experiences signs of a serious adverse event (e.g., heart failure, liver problems) or if side effects are persistent or bothersome.

Q: What are the official guidance documents concerning the maximum duration of use for It-MAC?

A: The maximum duration of use is defined within the dosing regimens for the different approved indications in the official prescribing information. For certain localized infections, official guidance describes fixed maximum durations (e.g., 6–12 weeks) or specific pulse regimens.

How should It-MAC be stored and disposed of?

How to Store and Dispose of It-MAC

The storage and disposal of It-MAC (Itraconazole Capsules) must strictly follow the conditions defined in official regulatory labeling to maintain product stability.

Storage Requirement Conditions Mandated by Regulatory Labeling
Temperature Store at controlled room temperature, typically 20^circC to 25^circC (68^circF to 77^circF). Do not freeze.
Protection Keep the capsules protected from light and excess moisture.
Packaging Store in the original container and keep the container tightly closed.
Safety Keep the medication out of the sight and reach of children and pets.

For disposal, unused or expired It-MAC must not be flushed down a toilet or sink. The product should be disposed of using an authorized drug take-back program or by following the official guidelines for mixing it with an undesirable substance before discarding it in the household trash.

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

Equivalent of It-MAC found in:

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