Iperton

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Medically reviewed

Laura Arias

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 Iperton

Property Description
Active ingredient Enalapril maleate, Hydrochlorothiazide
Form Tablet (Oral)
Pharmacological class Antihypertensive Agent
Common use Management of High Blood Pressure (Hypertension)
Origin Synthetic

Iperton is a fixed-dose combination medication classified as an antihypertensive agent, which means its primary role is the therapeutic management of persistently elevated blood pressure (hypertension). This synthetic pharmaceutical is an orally-active prescription-only preparation provided as a single tablet. The formulation is defined by the inclusion of two distinct active ingredients: Enalapril maleate, a recognized Angiotensin-Converting Enzyme (ACE) inhibitor, and Hydrochlorothiazide, a well-established member of the Thiazide diuretic class. This type of combination therapy is recognized for its role in providing blood pressure control compared to single-agent regimens.

The General Purpose of Iperton (Identity and Therapeutic Aim)

The general therapeutic purpose of Iperton is the long-term stabilization and normalization of high blood pressure, typically utilized in adult patients whose condition is not adequately managed by monotherapy. The medication’s identity is founded on its dual-mechanism function, which simultaneously addresses two primary factors contributing to hypertension: resistance within the blood vessels and total fluid volume. The Enalapril component promotes vessel relaxation, while the Hydrochlorothiazide component encourages the removal of excess fluid and sodium by the kidneys. This combined physiological action ensures comprehensive blood pressure control. This formulation, containing the combination of Enalapril and Hydrochlorothiazide, is also known commercially by other trade names, such as Vaseretic or Co-Renitec, emphasizing the established global utility of this specific two-drug regimen in antihypertensive therapy.

Regulatory References

  1. NIH MedlinePlus Drug Information
  2. NIH MedlinePlus Drug Information on Enalapril and Hydrochlorothiazide

What side effects are possible with Iperton?

Possible Side Effects and Safety Information

Iperton, a fixed-dose combination of Enalapril (an ACE inhibitor) and Hydrochlorothiazide (a thiazide diuretic), has a safety profile documented by regulatory authorities, classifying possible adverse reactions by frequency and organ system involvement. The spectrum of effects ranges from commonly reported events to rare, clinically significant reactions.

Official Adverse Reaction Classification

Side effects are formally classified based on incidence rates observed in clinical trials and post-marketing data:

  • Very Common / Common: Dizziness, headache, cough (typically dry and nonproductive), fatigue, weakness (asthenia), hypotension (low blood pressure), nausea, and changes noted upon investigation, such as hyperkalaemia (high potassium) and increases in serum creatinine.
  • Rare: Documented rare but serious reactions include Angioedema (swelling of the face, tongue, and throat), Hepatic Failure, and blood disorders such as Agranulocytosis. Acute eye symptoms like Acute Angle-Closure Glaucoma are also documented as a possible effect.

Key Regulatory Safety Constraints

The medication is subject to formal safety restrictions detailed in official labeling:

  • Contraindications: Use is prohibited in individuals with a history of Angioedema related to a previous ACE inhibitor, in patients with Anuria (absence of urine), or during the second and third trimesters of pregnancy due to the risk of fetal injury and death. Concomitant use with Neprilysin inhibitors (e.g., sacubitril) is also contraindicated.
  • Population-Specific Notes: Safety has not been established for use in pediatric patients. Specific monitoring and caution are noted for individuals with renal impairment or diabetes.

Overdose and Emergency Response

Overdose and when to seek help

The official regulatory profile for Iperton overdose emphasizes the risk of severe systemic effects resulting from excessive pharmacological action. Overdose is primarily characterized by dangerous marked hypotension (an extreme drop in blood pressure) and stupor. Other documented manifestations include signs of dehydration and electrolyte depletion (e.g., hyponatremia) due to the diuretic component. Profound hypotension can lead to serious outcomes, including cardiac arrhythmias or central nervous system effects such as seizures.

Official Emergency Action

Immediate medical help must be sought for any suspected overdose. Regulator-derived instructions state that emergency services (e.g., 911) must be contacted immediately if the individual has collapsed, had a seizure, has trouble breathing, or cannot be awakened. The prescribed therapy should be discontinued upon recognition of overdosage, and the patient must be observed closely.

Management and Specific Considerations

Management is classified as symptomatic and supportive, as no specific antidote is available in the official labeling. Interventions focus on correcting the acute effects, such as administering an intravenous infusion of normal saline solution to manage marked hypotension. A specific consideration exists for patients with severe renal impairment (creatinine clearance le 30 mL/ min), where enalaprilat accumulation may occur, and hemodialysis may be required for its removal.

Therapeutic Uses of Iperton

What Iperton treats: main uses and benefits

Iperton may be part of long-term management for Essential Hypertension, the chronic condition defined by persistently high blood pressure. This medication is commonly used to help with the systemic issue of Elevated Vascular Pressure. This approach is generally utilized when blood pressure is not adequately managed by monotherapy, supporting stabilization within the acceptable therapeutic range.

the key therapeutic benefit may assist in managing the systemic burden associated with chronic hypertension. By helping to lower the force exerted on blood vessels, Iperton contributes to easing the overall physiological strain. This supportive effect may contribute to improved general well-being and is relevant for managing conditions marked by increased physiological stress over time. This combination is commonly used across domains where a dual-mechanism approach is considered appropriate for managing conditions presenting with systemic or localized discomfort, such as persistent Essential Hypertension.

“This fixed-dose combination may assist with maintaining a sense of stability when chronic hypertension becomes difficult to control.”

This fixed-dose formulation may assist with maintaining a sense of stability, supporting patients with a simplified regimen that helps with steady blood pressure control.


Quick Fact: Relevant for Symptoms Related to Heightened Physiological Activity Iperton is applied in clinical settings marked by the necessity for additional support in managing conditions involving episodic or fluctuating manifestations associated with persistently high blood pressure.

Regulatory References

  1. MedlinePlus Drug Information

Eligibility and Restrictions for Use

Official Eligibility Rules for Iperton (Enalapril/Hydrochlorothiazide)

Iperton is strictly intended for adult patients with essential hypertension not adequately controlled by single-agent therapy. Eligibility is defined by formal regulatory rules that prohibit or restrict use in several populations.


Contraindicated Populations (Must Not Use) Age-Group Restrictions
History of ACE inhibitor-related angioedema or hereditary angioedema. Pediatric patients (<18 years): Safety and efficacy have not been established; use is not recommended.
Patients with anuria (inability to pass urine). Older adults: Use is allowed, but caution is warranted due to the increased likelihood of age-related organ impairment.
Hypersensitivity to any component or to other sulfonamide-derived drugs.
Second and third trimesters of pregnancy (must be discontinued upon detection).
Concomitant use with sacubitril/valsartan or aliskiren (in patients with diabetes or renal impairment).

Condition-Specific Limitations (Use Not Recommended)

The medication is not recommended for patients with severe renal impairment (creatinine clearance le 30 mL/min) or severe hepatic impairment. Use during breastfeeding is not recommended. Other restrictions apply to patients with gout or Systemic Lupus Erythematosus.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Official regulatory information classifies several combinations involving Iperton (Enalapril maleate/Hydrochlorothiazide) as contraindicated or highly restricted due to documented interaction risks.

Classification Restriction and Timing Requirements
Contraindicated Combination Neprilysin Inhibitors (e.g., Sacubitril): Co-administration is formally prohibited. A mandatory separation of 36 hours is required when switching between Iperton and a product containing a neprilysin inhibitor.
Population-Specific Contraindication Aliskiren-containing drugs: Co-administration is contraindicated in patients with Diabetes Mellitus or those with moderate to severe Renal Impairment (GFR < 60 mL/min/1.73 m^2).

Other significant interactions are noted in regulatory labeling based on their effect on systemic exposure or pharmacodynamic risk:

  • Potassium-Altering Agents: Co-use with Potassium Supplements or Potassium-Sparing Diuretics is documented to significantly increase the risk of hyperkalemia (elevated serum potassium levels).
  • Lithium: Diuretics reduce the renal clearance of Lithium, adding a high risk of toxicity; co-administration is generally not recommended.
  • Absorption Modification: Cholestyramine and Colestipol resins impair the absorption of the Hydrochlorothiazide component, reducing its systemic exposure.
  • Other Drugs: Non-Steroidal Anti-Inflammatory Drugs (NSAIDs) may reduce the antihypertensive effect, while mTOR Inhibitors (e.g., Sirolimus) carry an increased risk of angioedema.
  • Alcohol: Consumption of alcohol may enhance the blood pressure lowering effect, potentially increasing the risk of adverse outcomes.

The regulatory profile highlights constraints related to specific drug classes, mandatory timing rules, and restrictions tied to patient conditions, such as diabetes, to manage potential systemic and cardiovascular risks.

Mechanism of Action

Iperton is a prodrug that undergoes hepatic biotransformation to its active metabolite, enalaprilat. Enalaprilat functions as a competitive inhibitor of the Angiotensin-Converting Enzyme (ACE), a metalloprotease primarily localized on the surface of endothelial cells, particularly within the pulmonary circulation.


Molecular and System-Level Modulation

Inhibition of ACE disrupts the Renin-Angiotensin-Aldosterone System (RAAS) cascade. Specifically, the conversion of angiotensin I to the potent vasoconstrictor angiotensin II is significantly reduced. This reduction in circulating and tissue-localized angiotensin II leads to diminished stimulation of AT1 receptors on vascular smooth muscle cells.

The cellular consequence is a decrease in vasoconstriction, resulting in systemic vasodilation and a reduction in Total Peripheral Resistance (TPR). Furthermore, reduced angiotensin II decreases the stimulation of the adrenal cortex, leading to a fall in aldosterone secretion. Decreased aldosterone modulates renal distal tubule activity, promoting the excretion of sodium and water. Concurrently, ACE inhibition impedes the enzymatic breakdown of the endogenous vasodilator peptide, bradykinin, thereby increasing its systemic levels, which contributes to further vasodilation. The summation of these effects is a systemic modulation of vascular tone and fluid homeostasis.

Dosage and Administration Information

Iperton is a medication containing indapamide, a thiazide-like diuretic, used to manage high blood pressure (hypertension) and fluid retention (edema) associated with congestive heart failure. It is crucial to follow your doctor's instructions precisely, as the correct dosage depends on your specific medical condition and response to therapy.

Administration and Dosing

Iperton tablets are typically taken by mouth once a day, usually in the morning. Taking the dose earlier in the day is recommended to minimize nighttime urination. The tablet should be swallowed whole with water and can be taken with or without food.

Typical Adult Starting Doses:

Condition Initial Recommended Dose Maximum Recommended Dose
High Blood Pressure (Hypertension) 1.25 mg once daily 5 mg once daily
Fluid Retention (Edema) 2.5 mg once daily 5 mg once daily

For hypertension, the initial dose is often 1.25 mg daily, which may be increased by your healthcare provider after four weeks if the blood pressure is not adequately controlled. Doses greater than 5 mg daily are generally not recommended as they do not provide additional blood pressure control but may increase the risk of side effects.

Important Considerations

  • Missed Dose: If you forget a dose, take it as soon as you remember. However, if it is close to the time for your next scheduled morning dose, skip the missed dose and continue with your regular schedule. Do not take two doses at once.
  • Duration of Treatment: Indapamide is usually required for long-term treatment of high blood pressure and should be continued even if you feel well. Do not stop taking Iperton without first consulting your physician, as abrupt discontinuation can cause blood pressure to rise suddenly.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Iperton

The research on Iperton, which is a fixed-dose combination of enalapril and hydrochlorothiazide, has focused on its evaluation for use in essential hypertension. Studies conducted include Randomized Controlled Trials (RCTs) and long-term observational cohort studies, which are the basis for the regulatory evaluation of this medication.

Evidence for Use in Essential Hypertension

Research has explored the use of Iperton in adults with essential hypertension, particularly in cases where blood pressure remains high even after using a single medication (monotherapy). The studies monitored a primary outcome related to systemic physiological measurements: the change in systolic and diastolic blood pressure.

Trials reported patterns where blood pressure measurements differed when the two components were used in combination, compared to the measurements observed when using either component alone. Evidence also suggests that using a fixed-dose combination may be associated with improved medication adherence in the observed populations. Comparative Trials (RCTs) were used to examine how blood pressure measurements were monitored in patients receiving Iperton, in comparison with measurements from patients receiving its components separately.


Duration of Research: Long-Term Studies and Follow-Up

The research landscape includes studies with varying observation periods. Core efficacy studies, which monitor blood pressure changes, often have follow-up durations that were limited to a few weeks or months. However, other large-scale observational studies have been conducted over longer periods, sometimes extending up to five years.

These long-term observational settings tracked major cardiovascular events, which are outcomes related to systemic or functional imbalance. Specifically, studies monitored the occurrence of heart attack, stroke, or cardiovascular death to understand patterns in long-term health outcomes among patients using this type of combination therapy. Research provides insight into short-term changes, but long-term effects are not fully established by dedicated, multi-year RCTs.


What is Still Uncertain About Iperton's Research

The research base contains certain limitations and areas where data remain insufficient.

  • Pediatric Data: There is limited information for the clinical evaluation of the specific Iperton combination in the pediatric population (children and adolescents under 18 years).
  • Initial Therapy: The research structure generally positions the combination for use after monotherapy, as it was observed in studies as a step for patients whose blood pressure remained uncontrolled after using a single component drug first.
  • Subgroup Findings: Data show patterns related to how different racial or ethnic groups may respond differently to the single components of the drug, and subgroup findings are uncertain regarding the combined fixed dose, suggesting that research is ongoing in this area.

Frequently Asked Questions (FAQ)

Common questions about Iperton (FAQ)

Q: How is Iperton different from other types of medication used for similar conditions?

Iperton is a fixed-dose combination of two distinct types of medicine: an ACE inhibitor and a thiazide diuretic. According to regulatory documents, this dual formulation is designed to provide comprehensive blood pressure control. Research suggests that the resulting blood pressure response is related to the actions of both components and is often greater than when either component is used alone.

Q: Is Iperton considered a first-line treatment in medical guidelines?

Official product information states that this combination tablet is not indicated for initial therapy for high blood pressure. Regulatory documents note it is typically used for adult patients whose blood pressure remained uncontrolled after using a single medication. This positioning is based on the research used for regulatory approval.

Q: Is it typical for Iperton to cause dizziness or lightheadedness, especially when standing?

Yes, dizziness and feeling lightheaded, particularly upon standing up (a condition known as postural hypotension), are reported side effects. This dizziness or lightheadedness is documented as a potential adverse reaction in the product information, especially since the medication contains a diuretic component that affects the body’s fluid volume.

Q: What kinds of gastrointestinal issues, like nausea or stomach discomfort, have been reported with Iperton?

Official labeling reports a range of gastrointestinal issues in patients using this medication. These include nausea, vomiting, diarrhea, constipation, and dry mouth. Dyspepsia (indigestion or stomach discomfort) and flatulence have also been reported.

Q: What are the official warning signs of a potential allergic reaction to Iperton?

Signs of a serious allergic reaction documented in regulatory materials include a rash, hives, itching, or hoarseness. More severe reactions, such as the swelling of the face, lips, tongue, or throat (angioedema), are also documented in the official labeling.

Q: Does taking certain vitamins or minerals affect the action of Iperton?

Official warnings specify that supplements containing potassium can interact with this medication. The use of potassium supplements or salt substitutes that contain potassium may significantly increase the risk of developing hyperkalemia (high potassium levels in the blood).

Q: Are there any non-drug products mentioned in official documents that interact with Iperton?

Yes, regulatory information cautions against the consumption of alcohol, as it may intensify the blood pressure lowering effect, which could increase the risk of dizziness or other adverse outcomes. Additionally, the use of potassium-containing salt substitutes is also cautioned against due to the risk of high potassium levels.

Q: Has Iperton been studied in diverse patient populations or ethnicities?

Research indicates that the blood pressure response to the ACE inhibitor component may differ in Black patients when compared to non-Black patients. Official regulatory documents indicate that specific subgroup findings regarding the combined fixed dose are limited or uncertain.

Q: Can Iperton affect a patient's sleep patterns?

Official adverse reaction lists commonly report general effects like headache, fatigue, and tiredness. However, primary disturbances of sleep, such as difficulty falling asleep (insomnia) or excessive sleepiness (somnolence), are not typically listed as frequent adverse events in the regulatory labeling.

Q: Are skin reactions or rashes reported as possible side effects of Iperton?

Yes, serious skin reactions are documented as possible adverse effects. These include a simple skin rash or hives, as well as severe, blistering reactions like Stevens-Johnson syndrome. These conditions are documented in the labeling as potential, though not frequently reported, adverse effects.

Q: Does Iperton cause any known effects on muscle or joint comfort?

Muscle cramps and general muscle pain/weakness are documented as possible side effects of this medication, often tied to potential electrolyte imbalance. Furthermore, official product information notes that new or worsening symptoms of lupus (which can involve joint pain) have been reported.

Q: How quickly should a patient expect Iperton to begin showing its therapeutic effect?

The diuretic effect (increased urination) from one of the components begins within two hours of taking the tablet. To achieve the full blood pressure reduction, the label indicates that continuous use is necessary and that the effect may take several weeks to fully develop.

Q: Do patients typically feel any different immediately after starting Iperton?

Patients may notice an effect from the diuretic component, which is typically an increase in urination within a few hours. Any physical sensations experienced immediately after starting therapy could include common reported side effects such as dizziness or headache.

Q: What is the half-life of Iperton, as described in pharmaceutical information?

Pharmaceutical information describes that the plasma half-life of hydrochlorothiazide has been observed to vary between 5.6 and 14.8 hours. The half-life of enalaprilat, the active form of the other component, is prolonged in patients whose kidney function is reduced.

Q: Is it necessary to take Iperton at the exact same time every day to maintain its effect?

The antihypertensive effect of this medication is generally sustained for at least 24 hours. Regulatory documents indicate that the antihypertensive effect is sustained for at least 24 hours. Taking the dose around the same time each day is generally necessary to maintain consistent therapeutic coverage.

Q: Are there official warnings about taking herbal supplements with Iperton?

Regulatory patient information generally advises individuals to fully inform their healthcare provider of all prescription and non-prescription medicines they are using. This general advice covers providing information about all herbal products and supplements for the safe management of treatment.

Q: Is Iperton listed as being restricted for use in patients with certain pre-existing heart conditions?

Yes, regulatory documents advise that caution is warranted for patients with certain pre-existing heart conditions. These conditions include severe congestive heart failure, aortic stenosis, and hypertrophic cardiomyopathy, as using this medication may increase the risk of certain adverse outcomes.

Q: Does Iperton contain any common allergens like gluten, lactose, or specific dyes?

Official labeling lists the inactive ingredients, which include lactose (as lactose monohydrate) and various coloring agents (dyes), in addition to other components. Information regarding the presence of gluten is generally not provided in the primary regulatory labeling.

Q: Is Iperton a controlled substance or does it have the potential for addiction?

This medication is classified as an antihypertensive agent and is not listed as a federally controlled substance. The official labeling states that patients should not let anyone else take the medication, consistent with standard caution for prescription-only products.

Q: What should a patient know about the inactive ingredients in Iperton tablets?

The tablets contain several inactive ingredients, including corn starch, lactose, magnesium stearate, pregelatinized starch, and sodium bicarbonate. Different tablet strengths may contain different coloring agents (dyes).

How should Iperton be stored and disposed of?

How to Store and Dispose of Iperton

Iperton (Enalapril Maleate / Hydrochlorothiazide) tablets must be stored according to official regulatory specifications to maintain stability.

Storage Conditions

The medication must be kept at controlled room temperature, which is typically 15 C to 30 C (59 F to 86 F). The product must be protected from light and moisture and kept away from excessive heat or freezing. Store the tablets in their original container and ensure the cap remains tightly closed.

Safety and Disposal

For safety, Iperton must be kept out of the sight and reach of children and pets. Unused or expired medication should be disposed of using a drug take-back program or a method authorized by a healthcare professional or pharmacist. Do not keep outdated medicine.

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

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