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Эплеренон

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Эплеренон

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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.

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Overview of Эплеренон

Quick Facts

Property Description
Active Ingredient Eplerenone (Эплеренон)
Form Oral Tablet
Pharmacological Class Selective Mineralocorticoid Receptor Antagonist (MRA)
Origin Synthetic Organic Compound (Steroid Derivative)
Primary Action Blocking Aldosterone

Эплеренон: Definition and Pharmacological Class

Эплеренон (Eplerenone) is a prescription-only medication that is chemically a synthetic organic compound derived from steroids. It is classified pharmacologically as a Selective Mineralocorticoid Receptor Antagonist (MRA). The medicine is formulated as a single-ingredient product, supplied exclusively as an oral tablet for administration through the mouth.

The drug's core identity stems from its active substance, Eplerenone, which is specifically designed to interact with a hormone system in the body. Eplerenone has a targeted action that supports patients needing specialized cardiovascular support. This plays a role in providing protection to the heart and vascular system.


Action of this Selective Aldosterone Blocker

The primary therapeutic purpose of Eplerenone is to selectively block the powerful natural hormone aldosterone. Aldosterone normally signals the kidneys to retain sodium (salt) and water, which increases blood volume and places chronic strain on the heart and blood vessels.

By blocking the mineralocorticoid receptors where aldosterone acts, Eplerenone helps modulate fluid balance through a potassium-sparing effect, reducing the unnecessary retention of salt and water. Eplerenone is a highly selective MRA. This characteristic emphasizes the dual benefit of the medicine: regulating fluid balance while safeguarding heart tissues over time. A typical use scenario involves its application when heart function is reduced to help maintain stability and prevent further stress on the cardiovascular system.

This selective action is a key differentiating factor, as it significantly reduces the drug's affinity for other steroid hormone receptors, including those for androgens and progesterone. This provides a highly targeted therapeutic profile compared to older, non-selective MRA analogues.

Regulatory References

  1. U.S. National Library of Medicine
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What side effects are possible with Эплеренон?

Possible side effects and safety information

The official safety profile for Eplerenone is primarily structured around the potential for Hyperkalaemia (elevated blood potassium), which is documented as a Very Common adverse reaction in certain patient populations and at higher doses. This reflects the medicine’s function as a potassium-sparing agent, with the highest risk noted during the initial phase of treatment and following any dose escalation.

Adverse reactions are formally categorized by frequency and the System-Organ Class (SOC) affected, as outlined in regulatory documents such as the FDA Prescribing Information and the EMA SmPC. Common adverse reactions (occurring in ge 1/100 people) often include Dizziness, Headache, Hypotension (low blood pressure), Diarrhoea, Nausea, and Increased blood creatinine.

The regulatory documents also describe Serious Adverse Reactions, notably Severe Hyperkalaemia due to the risk of life-threatening cardiac rhythm abnormalities, and the very rare occurrence of Agranulocytosis (a severe reduction in white blood cells).

Population-Specific Safety Constraints

Safety constraints are explicitly documented for specific patient groups. Eplerenone is generally contraindicated (should not be used) in individuals with clinically significant Hyperkalaemia, severe renal impairment, or severe hepatic impairment. The risk of Hyperkalaemia is noted to be increased in older adults due to a higher prevalence of reduced kidney function, and concomitant use with certain medications (e.g., strong CYP3A4 inhibitors) is contraindicated due to increased safety risks.

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Overdose and Emergency Response

Overdose and When to Seek Help

Official regulatory information describes overdose of Eplerenone (Эплеренон) as primarily involving signs related to an exaggerated pharmacological effect, requiring immediate medical attention.


Documented Overdose Manifestations

Classification Manifestation/Sign
Clinical Signs Hypotension (low blood pressure), Dehydration
Laboratory Findings Hyperkalemia (elevated serum potassium), Hyponatremia (low serum sodium)

Severe Outcomes and Emergency Action

The most serious outcomes documented include severe hyperkalemia, which carries a risk of life-threatening cardiac arrhythmias, and clinically significant hypotension. Because no specific antidote is known, immediate medical attention must be sought for any suspected overdose.


Management and Monitoring

Management is strictly symptomatic and supportive treatment. Procedures such as gastric lavage and the administration of activated charcoal may be considered if ingestion was recent. Due to the critical risks, close and frequent monitoring of vital signs and serum electrolytes is required in a healthcare setting. Eplerenone is not removable by hemodialysis.

Population-Specific Note: Patients with impaired renal function have a documented increased risk for developing severe hyperkalemia following an overdose.

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Therapeutic Uses of Эплеренон

What Эплеренон Treats: Main Uses and Benefits


The medication Эплеренон is generally used as a supportive therapy in cardiovascular health, targeting key areas of systemic imbalance to ease the overall burden of symptoms. Its role is in the management of high blood pressure and in providing support during symptomatic periods for patients with certain types of heart failure.

The primary therapeutic domains for this medicine include assistance for high blood pressure and support after a heart attack. It is used across conditions presenting with episodic or fluctuating manifestations of pressure and swelling.

Supporting Long-Term High Blood Pressure Management

This medicine is generally used to address symptoms related to heightened physiological activity that cause persistently high blood pressure. It is applied across domains where additional symptomatic support is needed to maintain pressure control. By helping to reduce this pressure, it contributes to general well-being and assists with maintaining functional stability during periods of systemic imbalance.

Assisting Recovery and Stability After a Heart Attack

Eplerenone is relevant in contexts marked by increased discomfort or tension, specifically for individuals who have developed symptoms that interfere with daily functioning due to heart failure following a heart attack. It plays a role in managing conditions characterized by periods of heightened symptoms and contributes to improved comfort during these symptomatic periods, which may assist with maintaining functional stability.


Quick Fact: Supports Management of Symptoms that Interfere with Daily Functioning

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Eligibility and Restrictions for Use

Eligibility Map: Who Can and Cannot Use Eplerenone — Official Regulatory Information

The eligibility for Eplerenone is strictly defined by government regulatory documents, focusing on patient status, comorbidities, and concomitant use of other medicines. The medication is approved for use only in adult patients (ge 18 years old) for established indications like heart failure post-myocardial infarction and hypertension.


Absolute Contraindications

Contraindication Entity Restriction Type
High Serum Potassium Serum potassium levels > 5.5 mEq/L at initiation.
Severe Kidney Impairment Creatinine Clearance (CrCl) le 30 mL/min or severe renal failure.
Potassium-Related Medicines Concomitant use of potassium supplements or potassium-sparing diuretics.
Strong Drug Interactions Concomitant use of strong CYP3A4 inhibitors (e.g., ketoconazole, clarithromycin).

Population-Specific Restrictions

  • Pediatric Use: Use is not established and not recommended in children and adolescents (le 18 years of age).
  • Liver Impairment: Contraindicated in severe hepatic impairment; use requires caution in mild-to-moderate impairment.
  • Hypertension Patients: Stricter non-eligibility rules apply, including contraindication for CrCl < 50 mL/min and in patients with Type 2 Diabetes Mellitus with microalbuminuria.
  • Pregnancy/Lactation: Use during pregnancy is only recommended if clearly needed; a decision to discontinue nursing or discontinue the drug is advised during lactation.
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What should I know about interactions with other medicines?

Interactions with other medicines and products

The official interaction profile for Eplerenone is defined by specific pharmacokinetic (PK) and pharmacodynamic (PD) constraints, as documented in government labeling. The interaction structure necessitates strict administration limitations.

Mandatory Prohibitions

Co-administration is contraindicated with potent CYP3A4 inhibitors, such as ketoconazole, itraconazole, nefazodone, and ritonavir, as these agents significantly increase Eplerenone exposure (AUC) by up to five-fold. The use of potassium supplements and potassium-sparing diuretics (e.g., amiloride, spironolactone) is also prohibited, particularly for patients treated for hypertension, due to the established risk of hyperkalemia resulting from an additive pharmacodynamic effect.

Clinically Significant Interactions

Eplerenone is cleared primarily by the CYP3A4 enzyme. Moderate CYP3A4 inhibitors, including fluconazole and erythromycin, approximately double Eplerenone exposure. For post-myocardial infarction heart failure patients receiving a moderate inhibitor, a dose restriction applies, limiting the dose to 25 mg once daily. Concurrent use with ACE inhibitors, ARBs, or NSAIDs is documented to increase the risk of hyperkalemia. Monitoring of serum potassium and creatinine is required upon initiation of a moderate CYP3A4 inhibitor or in patients with renal impairment, proteinuria, or diabetes, as these conditions amplify the risk of interaction-related hyperkalemia.

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Mechanism of Action

The mechanism of Эплеренон is defined by its role as a highly selective competitive antagonist of the Mineralocorticoid Receptor (MR). By binding to the MR, the drug interferes with the signaling cascade of the hormone aldosterone, resulting in modulation of both fluid/electrolyte balance and non-epithelial tissue signaling.

In the kidney's collecting ducts, MR antagonism inhibits the expression of transport proteins necessary for sodium ( Na^+) reabsorption and water retention. This results in reduced fluid volume and a potassium-sparing effect, conserving potassium ions ( K^+) and maintaining a distinct Na^+/ K^+ exchange profile.

Эплеренон also engages MRs located in non-epithelial cells, such as those in the myocardium and blood vessels. By blocking aldosterone signaling in these sites, the mechanism suppresses pathways that drive excessive collagen synthesis and inflammation, which influences tissue remodeling in the myocardium and vasculature.

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Dosage and Administration Information

How to Use Eplerenone

Eplerenone is exclusively administered via the oral route as a 25 mg or 50 mg film-coated tablet. The high-level usage pattern is defined by the specific clinical scenario, requiring distinct initial doses and adjustment schedules.


Administration and Dosing Regimens

Condition Initial Dosing Schedule Target Maintenance Dosing Maximum Daily Dose
Heart Failure Post-MI 25 mg once daily (OD) 50 mg once daily (OD) 50 mg
High Blood Pressure 50 mg once daily (OD) 50 mg once daily (OD) 100 mg (50 mg BID)

Therapy for post-myocardial infarction (post-MI) heart failure is typically initiated within 3 to 14 days of the acute event. The titration period—the time frame for adjusting the dose toward the final maintenance level—is usually completed within four weeks.


Administration Context and Population Rules

Eplerenone may be taken with or without food, offering flexibility in daily administration. The primary principle governing dose adjustment is the result of periodic laboratory assessments, most notably serum potassium levels, which guide whether the dose should be increased or maintained.

For certain groups, modifications to the starting schedule are established. For example, patients with moderate renal impairment (CrCl 30-60 mL/ min) who are using the medicine for heart failure are typically started at a lower frequency of 25 mg every other day (EOD). In the event of a missed dose, the standard procedure is to not take a double dose to compensate.

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Recent Clinical Evidence

Research Evidence / Overview of Studies for Эплеренон (Eplerenone)


Evidence for Patients Assisting Recovery and Stability After a Heart Attack

Large-scale randomized controlled trials (RCTs) have been conducted exploring Eplerenone in adult patients shortly after an acute myocardial infarction (heart attack). These studies were focused on individuals who also had established signs of heart failure and a significantly reduced heart pumping capacity (e.g., LVEF le 40%). Researchers primarily measured how outcomes related to physiological strain evolved, such as all-cause mortality and the frequency of hospitalization for heart failure events over intermediate time periods.

Evidence for Patients with Mildly Symptomatic Chronic Heart Failure

Research also examined Eplerenone in stable adult patients with mild symptoms of chronic heart failure (NYHA Class II) and a reduced heart pumping capacity. These studies were generally randomized controlled trials exploring short-term symptom changes, where researchers monitored outcomes describing episodic or acute changes specifically due to heart failure.

Evidence for Patients Supporting Long-Term High Blood Pressure Management

The evidence for supporting high blood pressure management comes from multiple short-term randomized controlled trials and pooled analyses. These studies primarily measured changes in seated systolic and diastolic blood pressure (BP) over durations typically lasting a few months. The populations studied included adults with primary hypertension as well as those with resistant hypertension (uncontrolled high BP despite use of other agents).

What is Still Uncertain About Эплеренон Research

The evidence for Eplerenone, while supported by high-quality RCTs in its main indications, does have limitations. For instance, the primary outcomes in hypertension studies are surrogate measures (BP numbers), and long-term effects are not fully established beyond the initial trial follow-up durations. Findings describe group patterns, not individual predictions, and research does not determine whether an individual will respond similarly to the patients observed. Data for certain groups, such as children, remain insufficient.

Key Studies & References

  1. Eplerenone, a selective aldosterone blocker, in patients with left ventricular dysfunction after myocardial infarction (The EPHESUS Trial)
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Frequently Asked Questions (FAQ)

Common questions about Эплеренон (FAQ)

Q: How is Эплеренон different from a traditional water pill (diuretic)?

A: According to official product information, Eplerenone is classified as a potassium-sparing diuretic and a selective mineralocorticoid receptor antagonist. Its mechanism works by blocking the aldosterone hormone to modulate fluid balance. This action helps the body reduce fluid and salt retention while conserving potassium, which is a key difference from many traditional diuretics that cause potassium loss.

Q: What is the difference between Эплеренон and Спиронолактон (Spironolactone)?

A: Regulatory documents state that Eplerenone is a highly selective antagonist, unlike spironolactone which is non-selective. This key difference provides Eplerenone with a lower reported incidence of hormonal side effects. These include effects like gynecomastia (breast enlargement in men) and breast tenderness.

Q: How long does it usually take to see the effects of Эплеренон?

A: Official product information indicates that the maximum therapeutic effects may not be observed immediately. For individuals taking Eplerenone for high blood pressure, it may take four weeks or longer to achieve the expected clinical results.

Q: Should I worry about dizziness when taking Эплеренон?

A: Dizziness is reported in official documents as a common side effect of this medication. Official guidance notes that due to the potential for dizziness, activities such as operating hazardous machinery or driving may require caution until the individual is aware of how the medication affects them.

Q: Are there specific foods or drinks to avoid while taking Эплеренон?

A: Yes, official information indicates that grapefruit and grapefruit juice should be avoided because they can increase the levels of Eplerenone in the blood. Regulatory documents also state that salt substitutes or low-sodium salts should not be used, as they contain high levels of potassium.

Q: Can Эплеренон be taken by patients who are elderly?

A: Eplerenone is approved for use in adults, including the elderly. However, official information notes that caution is necessary because older patients are more likely to have age-related kidney problems. Reduced kidney function can increase the risk of developing hyperkalemia (high potassium levels).

Q: Does Эплеренон have long-term side effects?

A: The medicine may be taken long-term to manage chronic conditions. Official sources state that to manage potential long-term risks, patients require periodic monitoring of blood potassium and kidney function, which is managed under medical supervision.

Q: Is it necessary to continue taking Эплеренон even if my symptoms improve?

A: Official guidance emphasizes that the medication is generally intended for continuous use, even if symptoms appear to improve. Discontinuing treatment should only be considered following consultation with a healthcare provider, as abrupt cessation may lead to worsening of the underlying condition.

Q: Is there a risk of developing breast tenderness (gynecomastia) with Эплеренон?

A: Official product information lists gynecomastia (breast enlargement in men) and breast tenderness as rare or less common side effects. The risk of these hormonal effects with Eplerenone is significantly lower than that of older, non-selective medicines in its class.

Q: Are there any known interactions between Эплеренон and alcohol?

A: Regulatory documents state that consuming alcohol while taking Eplerenone may result in an additive blood pressure-lowering effect. This combination can increase the risk of symptoms like dizziness or lightheadedness due to low blood pressure.

Q: What are the signs of having too much potassium (hyperkalemia) due to Эплеренон?

A: High potassium levels, known as hyperkalemia, are a potential adverse reaction noted in official documents. Patient-perceivable signs may include muscle weakness, unusual tiredness, a feeling of tingling, an irregular heartbeat, or nausea and vomiting.

Q: Are there food restrictions related to sodium intake while on Эплеренон?

A: Official health guidance notes that while reducing salt intake helps manage blood pressure, going on a severely low-salt diet while taking Eplerenone should be discussed with a healthcare provider. Consultation with a healthcare provider is generally recommended before making significant changes to sodium intake.

Q: Does taking Эплеренон cause fatigue or tiredness?

A: Yes, regulatory documents list tiredness or fatigue among the reported side effects. If fatigue is experienced persistently or becomes a concern, individuals should seek guidance from a healthcare provider.

Q: Does Эплеренон have a generic version available?

A: Yes, official sources confirm that the medicine is available as a generic drug (Eplerenone) and is also sold under the brand name Inspra.

Q: Does Эплеренон affect blood sugar levels?

A: Official regulatory documents indicate that patients with Type 2 Diabetes Mellitus with microalbuminuria are at an increased risk of developing hyperkalemia (high potassium) while taking the medication. This patient group is typically subject to careful monitoring, which is commonly performed under medical supervision.

Q: Can Эплеренон be taken at the same time as other heart medications?

A: Eplerenone is frequently used alongside other heart medicines. However, official product information explicitly lists contraindications for co-administration with certain drugs, such as potassium-sparing diuretics or strong CYP3A4 inhibitors. Use with other agents requires medical supervision and may need careful monitoring.

Q: What happens if I accidentally take two doses of Эплеренон?

A: An accidental overdose may lead to signs of significantly low blood pressure or elevated potassium levels. Official documents advise that if an overdose is suspected, immediate emergency medical attention should be sought.

Q: Is Эплеренон generally considered a well-tolerated drug?

A: While the official documents do not use the exact phrase 'well-tolerated,' the safety data indicates differences in the side effect profile compared to older, non-selective medicines in its class. This is primarily due to a lower reported incidence of hormonal side effects.

Q: What is the risk of dehydration when taking Эплеренон?

A: The medicine works by promoting fluid loss, which carries a potential risk of dehydration. According to official information, dehydration is a potential risk factor that can increase the chance of developing hyperkalemia (high potassium) or may be a sign of kidney issues.

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How should Эплеренон be stored and disposed of?

Storage and Disposal Instructions for Eplerenone

Eplerenone tablets must be stored under specific conditions defined in regulatory labeling to maintain product stability and quality.

Required Storage Conditions

The tablets should be kept at Controlled Room Temperature (CRT), which is 20 C to 25 C (68 F to 77 F). The medicine must be stored in its original, tightly closed container, and protected away from heat, moisture, and direct light.

It is mandatory to keep the product out of the reach of children and to keep it from freezing.

Official Disposal

All unused or expired Eplerenone must be disposed of in accordance with local regulations. Do not discard outdated medicine in household trash or wastewater. Consult a healthcare professional or pharmacist regarding proper disposal methods for any unused product.

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

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