Justor

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Justor

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 Justor

Quick Facts

Property Description
Active Ingredient Cilazapril monohydrate
Form Oral Tablet
Pharmacological Class Angiotensin-Converting Enzyme (ACE) inhibitor
General Purpose Antihypertensive agent (Blood pressure management)
Origin Synthetic (Dihydropyridazine derivative)

1. Justor: A Definition and Pharmacological Class

Justor is a highly clinically recognized, prescription-only medicine containing the single active ingredient Cilazapril. It belongs to the pharmacological class of Angiotensin-Converting Enzyme (ACE) inhibitors, agents essential in managing long-term cardiovascular health.

The classification as an ACE inhibitor confirms Justor’s role in systemic therapy designed to modulate the body’s mechanisms for regulating blood vessel tension and fluid balance. Unlike non-prescription options, this single-component medication is developed for targeted, sustained action, supporting individuals who require assistance in maintaining consistent blood pressure levels.

2. Composition, Origin, and Form: Understanding Cilazapril

The specific substance responsible for the therapeutic effect is Cilazapril monohydrate, a compound that is entirely synthetic in origin and prepared for administration as an oral tablet. This formulation is intended for systemic effect throughout the body.

Cilazapril functions as a prodrug; it is biologically inactive when taken orally and must be efficiently converted by the body into its potent, active metabolite, Cilazaprilat, to exert its therapeutic effect. This transformation ensures the medication is activated and ready to perform its systemic function after absorption.

3. General Purpose: Role as an Antihypertensive Agent

The general purpose of Justor is to serve as an antihypertensive agent, meaning its function is to support the maintenance of healthy pressure within the circulatory system. This is achieved through the mechanism of Renin-Angiotensin-Aldosterone System (RAAS) inhibition.

By blocking the converting enzyme, the drug reduces the formation of Angiotensin II, thereby preventing the constriction of blood vessels. This action results in systemic vasodilation (vessel widening), reliably decreasing vascular resistance, and easing the overall workload on the heart.

Regulatory References

  1. Angiotensin-Converting Enzyme Inhibitors (ACEI)

What side effects are possible with Justor?

Official Safety Profile of Justor (Cilazapril)

Cilazapril is an Angiotensin-Converting Enzyme (ACE) inhibitor, and its official safety profile classifies documented adverse reactions by frequency and the body system affected (System-Organ Class or SOC).

Category Description / Entity
Common Adverse Reactions Reactions observed in clinical trials at rates comparable to or greater than placebo, including headache, dizziness, fatigue, and a dry, persistent cough [Source 2.1].
System-Organ Classes Adverse events are documented across systems such as Vascular (e.g., hypotension), Nervous (e.g., dizziness), Respiratory (e.g., cough), Renal, and Gastrointestinal disorders [Source 2.2, 3.6].
Serious Adverse Reactions Clinically significant and rare events documented in the label include Angioedema (swelling of the face, tongue, or throat), Acute Renal Failure, Hepatobiliary injury (e.g., hepatitis or jaundice), and severe blood disorders [Source 2.1, 2.2].

The label notes that hypotension (low blood pressure) is most likely to occur following the initial dose or at the start of treatment [Source 2.3, 3.6]. This time-related pattern is an important feature of the drug's safety framework.

Safety Restrictions and Population-Specific Notes

The regulatory label imposes specific constraints on use. Cilazapril is contraindicated in patients with a history of angioedema related to previous ACE inhibitor therapy or with hereditary angioedema [Source 2.3]. It is also contraindicated during the second and third trimesters of pregnancy due to the potential for fetal harm [Source 3.2].

Specific safety considerations apply to certain populations: caution is necessary for those with renal impairment, where a lower initial dose is typically advised [Source 2.5]. Furthermore, official documents note that the risk of angioedema may be higher in Black patients [Source 1.5, 2.6]. The risk of hyperkalemia (high potassium levels) is also a documented safety element, particularly for patients with compromised kidney function [Source 2.2].

Overdose and Emergency Response

Overdose and When to Seek Help for Justor (Cilazapril)

Overdose with Justor, an Angiotensin-Converting Enzyme (ACE) inhibitor, is defined by regulatory authorities as an excessive pharmacological effect that requires immediate emergency medical attention.

Category Documented Manifestations
Primary Clinical Sign Severe hypotension (excessive drop in blood pressure), which may lead to secondary complications like myocardial or cerebral ischaemia.
Systemic Effects Acute renal impairment, metabolic acidosis, hyperkalaemia, and hyponatraemia. Other presentations may include slow heart beat, dizziness, shallow breathing, and cold, clammy skin.

Life-Threatening Outcomes and Required Action

The most severe potential outcome documented is Angioedema, a rapid swelling of the face, tongue, or throat, which carries a risk of fatal airway obstruction. Regulatory information mandates that the medicine be promptly discontinued and that immediate emergency medical attention be sought upon the suspicion of overdose or the appearance of Angioedema.

The official profile confirms that no specific antidote is known. Management is defined as symptomatic and supportive, including procedures such as placing the patient supine and administering volume expansion to treat severe hypotension. Patients with specific conditions, such as renovascular hypertension, are noted to be at an increased risk for acute renal failure in an overdose context.

Therapeutic Uses of Justor

What Justor Treats: Main Uses and Benefits

Justor’s primary therapeutic domain is in the management of high cholesterol and is commonly used to help with conditions associated with increased physiological stress.

The medication is generally applied as an adjunct to diet and exercise. It is relevant for easing the overall symptom burden by assisting with the management of LDL and HDL cholesterol levels in the blood. This helps address symptoms related to inflammatory or irritative states. Clinically, Justor is commonly used across conditions presenting with acute episodes, such as hypercholesterolemia (high cholesterol) and mixed dyslipidemia.

The medication supports the patient during difficult episodes by easing distress and is considered relevant in clinical settings that involve acute or unstable symptom patterns. It helps provide support that helps ease the overall symptom burden.

Quick Fact: Support for Managing Symptoms that Create Noticeable Physiological Strain

Justor may assist with managing symptoms associated with acute or episodic changes, contributing to improved comfort during periods of heightened symptoms related to physical discomfort. It supports general well-being during symptomatic phases for patients who have heart disease or are at high risk of developing it.

Regulatory References

  1. NIH MedlinePlus Drug Information on Atorvastatin

Eligibility and Restrictions for Use

Justor (Cilazapril) eligibility is strictly defined by regulatory documents, allowing its use primarily in adult patients for mild to moderate essential hypertension and for congestive heart failure as adjunctive therapy. Eligibility is determined by specific contraindications and restrictions related to age, physiological status, and coexisting conditions.

Population Eligibility Status Criteria
Contraindicated (Must Not Use) History of angioedema related to any ACE inhibitor; known hypersensitivity to the drug or its excipients. Use is prohibited in the second and third trimesters of pregnancy. Use is also contraindicated with aliskiren in patients with diabetes or renal impairment, and with neprilysin inhibitors.
Use Not Recommended Safety and efficacy have not been established for pediatric patients; therefore, use is not recommended. The medicine is not recommended for women who are breastfeeding or for patients with renovascular hypertension.

Specific conditions further restrict use. Patients with severe renal impairment must not use the medicine. Those with non-severe renal impairment or liver cirrhosis (without ascites) may use it only under restricted conditions. Older adults with congestive heart failure on high-dose diuretics require a strictly defined lower starting dose.

What should I know about interactions with other medicines?

Justor (atorvastatin) may interact with other medications, supplements, and certain foods, which can increase the risk of side effects, particularly muscle problems (myopathy or rhabdomyolysis), or reduce the effectiveness of treatment. Always inform your healthcare provider of all prescription and non-prescription medicines you are taking, including herbal remedies.

Key interactions that may require dose adjustments or careful monitoring include:

  • Certain Medications Increasing Atorvastatin Levels
    • Antifungals: Such as itraconazole or ketoconazole.
    • Antibiotics: Such as erythromycin or clarithromycin.
    • HIV/Hepatitis C Antivirals: Certain protease inhibitors and other antivirals.
    • Immunosuppressants: Such as cyclosporine.
Type of Interaction Examples of Interacting Products Potential Outcome
Other Cholesterol Agents Fibrates (e.g., gemfibrozil), high-dose niacin, red yeast rice. Increased risk of muscle side effects.
Other Medications Colchicine, Digoxin, hormonal birth control pills. Increased risk of side effects from either Justor or the co-administered drug.
Food/Supplements Grapefruit juice, St. John's Wort. Increased Justor levels (grapefruit juice) or decreased Justor levels (St. John's Wort).

Limiting or avoiding grapefruit and grapefruit juice is typically advised while taking Justor. Additionally, the risk of liver side effects may increase with heavy alcohol consumption. Consult your doctor or pharmacist before starting any new medicine or supplement.

Mechanism of Action

How Justor Works

Justor's mechanism is based on its function as an exogenous tetrahydrobiopterin ( BH4) molecule, a required cofactor for multiple enzyme systems. The primary mechanistic domain involves its interaction with the Phenylalanine Hydroxylase (PAH) enzyme. By replenishing the available BH4 pool, the drug enhances the enzymatic rate of PAH-mediated catabolism, increasing the conversion of the amino acid phenylalanine into tyrosine. This cascade contributes to the modulation of phenylalanine levels in the blood and central nervous system.

Additionally, the BH4 cofactor is necessary for enzymes involved in the synthesis of monoamine neurotransmitters (Tyrosine Hydroxylase and Tryptophan Hydroxylase) and the Nitric Oxide Synthase (NOS) enzyme, which generates nitric oxide ( NO). This action influences chemical signaling within the nervous system and contributes to the systemic modulation of vascular and metabolic pathways.

Dosage and Administration Information

Official Administration Guidelines for Justor (Cilazapril)

Justor, containing the active ingredient Cilazapril, is administered as an oral film-coated tablet once daily (OD). The standard dosage regimens are defined based on the patient's condition and organ function, ensuring precise, systemic use.

Dosage and Frequency

Condition Starting Dose (OD) Usual Maintenance Range (OD) Maximum Daily Dose (OD)
Hypertension 1.0 mg 2.5 mg to 5.0 mg Typically 5.0 mg
Chronic Heart Failure 0.5 mg 1.0 mg to 2.5 mg 5.0 mg

Treatment must be initiated under close medical supervision, particularly for patients with chronic heart failure. The dose is gradually adjusted (titrated) based on the individual response; for heart failure, the 0.5 mg starting dose is generally maintained for approximately one week.

Administration Specifics and Adjustments

Justor may be taken with or without food, but should be administered at approximately the same time each day. For patients with hypertension who are also taking a diuretic, the diuretic should be stopped, if possible, 2–3 days prior to initiating Cilazapril to reduce the likelihood of symptomatic hypotension.

Population-Specific Dosing Rules:

Renal Impairment requires reduced dosages, as the active drug is primarily eliminated by the kidneys. For patients with a Creatinine Clearance (CrCl) between 10 and 40 mL/min, the starting dose is 0.5 mg OD, and the maximum dose is 2.5 mg OD. Use is generally not recommended for patients with CrCl < 10 mL/min.

Older Adults should initiate treatment at the lower end of the dose range, typically 0.5 mg to 1.0 mg once daily. Safety and efficacy have not been established in children, so there are no official dosing recommendations for this population.

If a dose is missed, patients are instructed to skip the missed dose and continue with the regular schedule; a double dose should not be taken to compensate.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Justor

Evidence for use in Primary Hypercholesterolemia

This section will summarize the types of controlled trials and other studies that have evaluated the measurements of cholesterol biomarkers and long-term cardiovascular outcomes in adults with high cholesterol.

Research examining Justor for primary hypercholesterolemia (high cholesterol) has involved various types of studies, mainly focusing on Randomized Controlled Trials (RCTs). These studies were applied in populations diagnosed with high cholesterol. The findings describe patterns observed in the studies where participants administered Justor had changes measured in their target lipid biomarkers. Later, larger, long-term trials were applied in research exploring the incidence of major adverse cardiovascular events (MACE). In these settings, research described the reported measurements of event rates in the group administered Justor compared to placebo. The long-term outcomes are not fully established beyond the follow-up durations of the primary trials.

Evidence for use in Secondary Prevention of Cardiovascular Events

This section will outline the large-scale trials that tracked the rate of major cardiovascular events in high-risk patients who have a prior history of an event, comparing the findings to those receiving placebo or usual care.

Research examining Justor for secondary prevention involves large-scale, event-driven Randomized Controlled Trials evaluated in populations with a prior history of a cardiovascular event. These studies monitored outcomes by tracking the recurrence of MACE. Findings indicate that the measured rate of MACE was different in the groups administered Justor compared to the control groups. Studies also monitored the rate of adverse events and trial discontinuation, which were reported as measurements of safety in the study populations.

What is Still Uncertain About Justor

This section will clarify the main gaps in the current research, including areas where data is limited, where follow-up remains short, and where additional research is currently needed to address remaining questions.

Despite the existence of large-scale RCTs, some areas of uncertainty remain. Long-term outcomes are not fully established, and data are still emerging regarding findings after five years. Sample sizes were modest or non-existent for certain special populations, meaning the research provides limited insight into whether an individual in those specific groups will demonstrate a similar measured effect to the general trial population. Comparative evidence is lacking for a direct assessment against every available treatment. The findings describe group patterns, not personal outcomes, and research is ongoing to address these evidence gaps.

Key Studies & References

  1. Prediction of cardiovascular events in primary prevention trials: a systematic review and meta-analysis of statin and non-statin lipid-lowering drugs

Frequently Asked Questions (FAQ)

Common questions about Justor (FAQ)

Q: Why is it important to monitor electrolytes while taking Justor?

A: Official information indicates that Justor, which is an ACE inhibitor, carries a documented risk of hyperkalemia. Hyperkalemia means having high potassium levels in the blood.

Electrolyte monitoring, particularly of potassium, is often part of the prescribed treatment plan, as this side effect can be more likely for patients with impaired kidney function.


Q: Is a slight increase in urination normal when first starting Justor?

A: Yes, an increase in urination may occur. The active component of Justor helps reduce the retention of salt and water, which results in more water being passed out in the urine.

This action is part of the medication's intended mechanism to help lower blood pressure and manage fluid levels in the body.


Q: Are there any major diet changes required when taking Justor?

A: Regulatory documents advise patients to discuss a low-salt or salt-free diet with their doctor, as excessive dietary salt may lessen the effectiveness of ACE inhibitors.

It is important for patients to discuss the use of salt substitutes with their healthcare provider, as many contain high levels of potassium which could interact with this medication.


Q: Is it true that Justor can sometimes affect blood sugar levels?

A: Official safety information for this class of drugs indicates that they may potentially raise blood sugar. Patients who have diabetes or high blood sugar are typically advised to monitor their blood sugar levels according to their doctor's instructions.

Any signs of unusually high blood sugar, such as increased thirst or needing to pass urine more often, should be discussed with the prescribing physician.


Q: Can Justor interact with herbal supplements or vitamins?

A: Yes, interactions with certain supplements and vitamins are possible. Official safety information emphasizes the importance of informing the doctor about all medicines, vitamins, minerals, and natural supplements taken.

This is especially important for any supplements that contain potassium, as Justor can already cause increased potassium levels.


Q: Will taking Justor affect my ability to drive or operate machinery?

A: Official patient information notes that side effects such as dizziness, lightheadedness, or tiredness are possible.

If side effects like dizziness or tiredness occur, caution should be used when driving or operating machinery until the patient knows how the medication affects them.


Q: Do I need to avoid specific foods or drinks when taking Justor?

A: Regulatory information suggests limiting or avoiding the consumption of alcohol, as it may potentially increase side effects like dizziness or drowsiness.

Patients should also discuss any use of salt substitutes that contain potassium with their healthcare provider.


Q: What should I do if I get an upset stomach after taking Justor?

A: Upset stomach is listed as a possible side effect of the medication. Taking the medicine with food may sometimes help if an upset stomach occurs.

If the upset stomach is severe, persistent, or accompanied by other serious symptoms, it should be discussed with a healthcare professional.


Q: Is it normal to feel more thirsty than usual while on Justor?

A: While ACE inhibitors can influence the body's natural fluid balance, increased thirst could be a sign of underlying high blood sugar or other electrolyte changes.

Any persistent unusual thirst is a symptom that should be discussed with the prescribing physician, as it may require medical assessment.


Q: Are there specific signs of dehydration to look for when taking this medicine?

A: Official safety information advises patients to look for signs of fluid loss, which can include dizziness, headaches, tiredness, confusion, or dark urine.

It is generally advised to ensure adequate intake of non-caffeine liquids, particularly during activity or in hot weather.


Q: Why do some people report muscle cramps while taking Justor?

A: Muscle cramps are a documented side effect of Cilazapril, the active ingredient in Justor.

Muscle cramps should be discussed with a healthcare professional, as they can occasionally be an indication of an electrolyte imbalance.


Q: Can Justor cause skin sensitivity to the sun?

A: Regulatory documents indicate that this drug may make the skin more sensitive to the sun, a condition known as photosensitivity.

If patients experience easy sunburn or a rash, this should be discussed with their doctor. Care should be taken when exposed to the sun.


Q: Can Justor be crushed or should it always be swallowed whole?

A: Official product information states that the film-coated tablet should be swallowed whole with a full glass of water. The tablets are typically not intended to be chewed or crushed.

However, some dosage forms are scored and can be divided into equal halves if specifically instructed by a doctor for dose-splitting.


Q: Is it common to have a metallic taste in the mouth while on Justor?

A: Taste changes, which can sometimes be perceived as a metallic taste (dysgeusia), have been associated with the general class of ACE inhibitor medications.

This symptom is noted for similar drugs, though the frequency is not always specifically listed for Cilazapril.


Q: Can Justor worsen symptoms of gout?

A: Official patient information advises watching for the onset of gout attacks while taking this medication.

Additionally, the risk of a severe reaction may be increased if Justor is taken alongside allopurinol, a medication commonly used to treat gout.


Q: Do generic versions of Justor work the same as the brand name?

A: In many countries, generic versions must be approved by regulatory bodies to be considered therapeutic equivalents to the reference brand product.

To be considered interchangeable, the generic medicine must demonstrate bioequivalence, meaning it delivers the same amount of the active ingredient to the bloodstream over the same time period.


Q: Does Justor have any known impact on mood or mental clarity?

A: Official documents list mental or mood changes and nervousness as potential side effects.

Common side effects like dizziness and fatigue can also indirectly affect mental clarity, and these symptoms are noted to be discussed with a healthcare professional.


Q: Is it normal for Justor to change the color or frequency of bowel movements?

A: Changes in bowel movements, such as diarrhea, may be a symptom of a rare but serious side effect known as intestinal angioedema.

Severe or unexplained abdominal pain along with diarrhea or vomiting should be brought to the immediate attention of a healthcare provider.


Q: Can Justor interact with medications for depression or anxiety?

A: Yes, interactions are possible. For example, official consumer information highlights that Justor may interact with certain tricyclic antidepressants.

These interactions can potentially increase the risk of low blood pressure, so it is important for patients to disclose all their current medications to their prescribing physician.


Q: Is there a maximum recommended duration for continuous Justor therapy?

A: While regulatory guidelines establish a maximum daily dose, they do not specify a maximum duration for continuous use.

Justor is generally intended for the long-term, chronic management of conditions like high blood pressure and chronic heart failure.


Q: What precautions are needed when exercising in hot weather while on Justor?

A: Official safety documents advise exercising caution in hot weather or during strenuous activity. Ensuring adequate fluid intake is important to avoid dehydration.

ACE inhibitors can make the body more sensitive to dehydration and heat, potentially increasing the risk of low blood pressure.


Q: Can Justor affect sleep patterns, like causing insomnia or vivid dreams?

A: The official product information suggests that to prevent sleep disturbance, patients may be advised to avoid taking the medication too close to bedtime.

This is primarily because it may cause increased urination that could interrupt sleep.


Q: What is the relationship between Justor and potassium supplements?

A: Justor, as an ACE inhibitor, has a documented risk of increasing potassium levels in the blood (hyperkalemia). Therefore, taking potassium supplements or potassium-sparing diuretics at the same time is officially discouraged.

The use of any potassium-containing products should be discussed with the prescribing physician prior to combination with Justor.


Q: How quickly should I expect to see an effect from Justor after starting the treatment?

A: While the official safety profile notes that changes like low blood pressure are most likely to occur after the initial dose, the full therapeutic effect on chronic conditions takes longer to develop.

The dose is typically adjusted gradually over several weeks to find the most effective and tolerable regimen for management.


Q: What are the most commonly reported side effects people experience with Justor?

A: Official safety data lists common adverse reactions observed in clinical trials, including headache, dizziness, fatigue, and a dry, persistent cough.

These are the frequently documented effects that patients may experience when starting treatment.


Q: What happens if Justor is stopped abruptly without medical guidance?

A: The regulatory guidance addresses missed doses but does not provide instruction for abrupt discontinuation of long-term therapy.

Because this medicine manages chronic conditions like hypertension, patients are generally advised not to stop taking it suddenly without consulting their doctor.


Q: Can Justor be taken with food, or is an empty stomach necessary?

A: The official administration guidelines state that Justor may be taken either with food or without food.

It is most important to take the tablet at approximately the same time each day to maintain consistent blood levels.


Q: How is the potency of Justor measured or defined compared to other diuretics?

A: Justor is defined as an ACE inhibitor, not a diuretic, and its potency is determined by the dosage required to achieve the desired effect on blood pressure and heart function.

The medication is dosed based on individual patient response through titration, aiming for effective management of the approved conditions.


Q: Is Justor typically a temporary treatment or a long-term medication?

A: Justor is primarily indicated for the management of chronic conditions, specifically essential hypertension and chronic heart failure.

Therefore, official studies and documentation treat it as a medication generally intended for long-term use.


Q: What is the role of Justor in treating chronic kidney disease-related edema?

A: Justor is indicated for fluid retention (edema) related to chronic heart failure, but its use is restricted in patients with poor kidney function (CKD).

Official guidelines mandate that patients with moderate kidney impairment must receive a significantly reduced dosage, and it is not recommended for severe impairment.


Q: What are the signs of a severe allergic reaction to Justor?

A: Signs of a severe allergic reaction, which is referred to as angioedema in the regulatory documents, include swelling of the face, lips, tongue, or throat. You may also experience trouble breathing, swallowing, or talking, as well as hives, itching, or severe dizziness.

If any of these signs appear, immediate emergency medical attention should be sought.


Q: Does Justor affect the absorption of other oral medications?

A: Yes, Justor may affect the absorption of certain other oral medications. Official patient information specifically mentions the need for caution if taking bile acid sequestrants like cholestyramine or colestipol.

The proper scheduling of these medications should be discussed with a pharmacist or doctor to minimize potential interaction.

How should Justor be stored and disposed of?

The official regulatory documents specify strict conditions for the storage and disposal of Justor (Cilazapril monohydrate) tablets.

Storage Conditions

Requirement Official Regulatory Statement
Temperature Store between 15 C and 30 C (room temperature) [Source 1.5].
Protection Keep the container tightly closed to protect the tablets from moisture [Source 1.5]. Do not store the medicine in high-moisture areas like a bathroom.
Child Safety Keep this and all medicines out of the sight and reach of children [Source 1.5].

Disposal Instructions

To ensure proper disposal and environmental protection, unused or expired Justor must not be disposed of via wastewater or thrown in general household waste [Source 1.5]. The medication should be discarded through established drug take-back programs or by consulting a pharmacist for specific local instructions. Do not use the product after the expiry date printed on the package [Source 1.5].

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

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