Selis

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Medically reviewed

Marina Burgos

Last updated on 22/12/2025

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Selis

Property Description
Active ingredient Enalapril maleate
Form Film-coated tablet
Pharmacological class Angiotensin-Converting Enzyme (ACE) Inhibitor
General purpose Cardiovascular support and blood pressure management
Origin Synthetic compound

Selis is a trade name for a prescription-only synthetic medication whose active component is Enalapril maleate, classified as an Angiotensin-Converting Enzyme (ACE) Inhibitor. This compound has an established role in fundamental health systems worldwide. The medicine is typically used in scenarios requiring long-term control of high blood pressure.


What is Selis and Its Pharmacological Class?

Selis is a synthetic cardiovascular agent that belongs to the pharmacological class of Angiotensin-Converting Enzyme (ACE) Inhibitors. The active compound, Enalapril maleate, is structurally characterized as a pro-drug; it is chemically inactive upon oral ingestion as a tablet and requires biotransformation by the liver into its active form, Enalaprilat, to inhibit the ACE enzyme. This mechanism places the substance among agents that regulate the body's Renin-Angiotensin-Aldosterone System (RAAS), a critical pathway for managing blood pressure and fluid homeostasis. ACE inhibitors interrupt the RAAS pathway to achieve their primary therapeutic goal.


Composition, Origin, and Form

The core composition of Selis is the single active ingredient, Enalapril maleate, a stable chemical salt of synthetic origin. It is formulated for oral administration and is manufactured as a standard, single-ingredient, film-coated tablet. The design as a pro-drug, which undergoes post-absorption conversion to Enalaprilat, distinguishes its pharmacokinetic profile from some direct-acting ACE inhibitors. This specific characteristic of delayed activation is associated with the sustained action profile of Enalapril.


General Purpose and Cardiovascular Function

The overarching purpose of Selis is to provide foundational support to the cardiovascular system by managing blood vessel tone and blood pressure. The drug works by suppressing the production of Angiotensin II, a potent natural vasoconstrictor, which results in generalized vasodilation—the widening and relaxation of arteries and veins. This physiological effect systematically reduces the total resistance in the circulatory system, making it easier for the heart to pump blood and decreasing the overall workload placed upon the cardiac muscle. This fundamental mechanism relates to its role in supporting heart health.

Regulatory References

  1. Enalapril treatment of hypertension
  2. Enalapril maleate FDA Indications
  3. Enalaprilat active metabolite
  4. RAAS Physiology
  5. Enalapril in cardiovascular disease guidelines

What side effects are possible with Selis?

Officially Documented Side Effects and Safety Information

This section summarizes the high-level safety profile and adverse reactions of Selis (Enalapril maleate) as classified in government regulatory documents. The information is structured according to the frequencies and system-organ classes defined in prescribing information.

Classification Examples of Documented Reactions
Very Common (≥ 1/10) Dizziness, Blurred vision, Cough, Asthenia, Nausea
Common (≥ 1/100 to < 1/10) Headache, Syncope, Hypotension, Fatigue, Diarrhoea, Rash, Hyperkalaemia, Increased serum creatinine
Uncommon (≥ 1/1,000 to < 1/100) Anaemia, Confusion, Palpitations, Vomiting, Impotence, Renal dysfunction/failure

Serious adverse reactions highlighted in official warnings include Angioedema (swelling of the face, tongue, and/or larynx, which can occur at any time during treatment) and Fetal Toxicity. Angioedema is a serious event that is generally contraindicated in individuals with a history of swelling related to this class of medicine. Other serious reactions documented in official labeling include Hepatic Failure, Acute Renal Failure, and Neutropenia (low white blood cell count).

Specific safety considerations exist for certain populations. The medicine is contraindicated during the second and third trimesters of pregnancy due to the risk of fetal injury and death. Patients with renal impairment are noted to be at increased risk of hyperkalaemia and further decline in kidney function. These safety domains establish the official framework for understanding the medicine's risk profile.

Overdose and Emergency Response

Overdose and When to Seek Help

Selis overdose is a serious medical emergency that requires immediate professional attention. Suspected overexposure to any medication, regardless of the dose taken, should be treated with urgency. The clinical manifestations of a drug overdose vary depending on the specific properties of the substance, but they often involve a rapid progression of severe symptoms affecting vital systems.

Overdose presentations can include profound changes in mental status, such as extreme drowsiness, confusion, or complete unresponsiveness. Physiological systems potentially affected may include the cardiovascular and respiratory systems, leading to complications like slowed or difficult breathing, irregular heartbeat, or significant changes in blood pressure. In some cases, severe nausea, vomiting, or seizures may be documented.

When Immediate Medical Help Is Required

If you suspect an overdose of Selis, or if the individual exhibits any of the severe signs listed above, contact emergency medical services immediately (such as calling 911 or the local emergency number). Do not wait for symptoms to worsen. Be prepared to provide the emergency responders with as much information as possible about the substance and the amount taken.

The required emergency actions typically focus on the support of vital functions, which may involve maintaining a clear airway, providing breathing support, and managing blood pressure and heart rate. Further treatment will be determined by healthcare professionals based on the person's specific clinical condition and laboratory findings.

Therapeutic Uses of Selis

What Selis Treats: Main Uses and Benefits

Selis is commonly used across conditions presenting with systemic or localized discomfort related to the cardiovascular system, primarily to help manage chronic high blood pressure (hypertension) and its long-term effects. The medication is also relevant for easing the symptoms associated with acute or episodic changes of heart conditions. It helps address symptom clusters related to cardiac overload, such as increasing shortness of breath and physical fatigue, which contributes to easing the overall symptom load.

The medication is commonly used to help with sustained high blood pressure, supportive treatment for heart failure symptoms, and prevention of disease progression in high-risk patients. It is applied in addressing heart failure, where it assists with maintaining functional stability. For patients experiencing symptoms that interfere with daily functioning due to reduced cardiac efficiency, Selis provides supportive relief when symptoms interfere with routine activities.

“This use is considered relevant for easing symptoms linked to organ-specific functional stress, thus offering long-term supportive relief.”

Selis is commonly used in situations where patients experience multiple symptoms, including those with asymptomatic left ventricular dysfunction or those with conditions involving systemic or localized discomfort. This use is considered relevant for easing symptoms linked to organ-specific functional stress (kidney damage), thus offering long-term supportive relief when symptoms interfere with routine activities and general health.


Quick Fact: Relief for Symptoms related to Systemic Imbalance


Regulatory References

  1. NIH MedlinePlus overview on Enalapril

Eligibility and Restrictions for Use

Who Can and Cannot Use Selis? — Official Regulatory Information

The eligibility for Selis (Enalapril maleate) is strictly defined by government regulatory documents, establishing absolute contraindications and population restrictions.

Eligibility Scope

Category Regulatory Status
Populations for whom use is allowed Approved for adults and for children older than 1 month for hypertension.
Populations for whom use is not recommended Use is not recommended in infants younger than 1 month or during the first trimester of pregnancy.
Populations for whom use is contraindicated Contraindicated in women in the second and third trimesters of pregnancy.

Eligibility Classifications (Key Restrictions)

Official labeling contraindicates Selis for patients with a known hypersensitivity to any ACE Inhibitor or those with a history of angioedema related to previous ACE inhibitor use. The medicine must not be used in patients with diabetes receiving aliskiren or within 36 hours of taking a medicine containing sacubitril/valsartan.

Use requires caution in patients with impaired renal function, certain severe cardiovascular conditions like aortic stenosis, or those with hepatic impairment. Pediatric use is contraindicated in children with severe renal impairment.

What should I know about interactions with other medicines?

Official Interaction Restrictions and Constraints

Selis (Enalapril maleate) interacts with several medicinal products through pharmacodynamic effects and altered clearance, leading to specific regulatory constraints.

Contraindicated Combinations

The co-administration of Selis with the Neprilysin inhibitor combination, Sacubitril/Valsartan, is formally prohibited due to the documented risk of angioedema. A 36-hour wash-out period is mandatory when switching between these therapies. Selis is also contraindicated with Aliskiren-containing products in patients diagnosed with diabetes mellitus or those with renal impairment (Glomerular Filtration Rate < 60 ml/min/1.73 m^2).

Pharmacodynamic and Exposure Interactions

Interactions related to potassium and electrolyte balance are significant. Concomitant use with potassium-sparing diuretics (such as Spironolactone) and potassium supplements is generally not recommended, as this combination can lead to officially documented hyperkalemia (high serum potassium levels).

Interactions that reinforce blood pressure effects occur with other antihypertensive agents, narcotics, and anesthetics, resulting in additive hypotensive effects. Co-administration with Non-Steroidal Anti-Inflammatory Agents (NSAIDs) may officially diminish the blood pressure-lowering effect and can increase the risk of acute renal deterioration, particularly in elderly or volume-depleted patients.

Regarding drug exposure, Selis reduces the clearance of Lithium, which can lead to increased serum concentrations and toxicity. The co-administration of Selis with mTOR inhibitors (e.g., Sirolimus) is officially associated with an increased risk for angioedema. Regulatory information states that the absorption of Selis is not influenced by the presence of food.

Mechanism of Action

How Selis Works: Mechanism of Action

Selis acts as a selective inhibitor of the Sirtuin 1 (SIRT1) enzyme, an NAD^+-dependent protein deacetylase expressed across numerous tissues. The molecule binds to the enzyme, preventing it from performing its deacetylation function. This molecular action modifies the acetylation status of key nuclear and cytoplasmic regulatory proteins, including specific transcription factors.

This modification in protein activity leads to the modulation of cellular stress response and survival signaling pathways. Mechanistically, this results in a shift in gene expression patterns and influences processes related to the management and clearance of specific proteins within the cell.

These intracellular consequences cascade into altered activity within systemic metabolic and protein turnover pathways. The result is a modification of physiological responses within targeted tissues, influencing the drug's overall systemic function.

Dosage and Administration Information

Official Administration Guidelines

Selis (Enalapril maleate) is formulated for oral administration as a film-coated tablet in strengths of 2.5 mg, 5 mg, 10 mg, and 20 mg. A core administration principle is that its absorption is not affected by food, meaning the tablets or solution can be taken with or without meals.

Dosage and Frequency

The administration schedule is defined by the specific condition being addressed. For high blood pressure, the treatment typically begins at a low initial dose of 5 mg once daily, with the total daily dose ranging up to a maximum of 40 mg. The maintenance dose is often administered once daily. Conversely, use in heart failure often begins at a lower initial dose of 2.5 mg once or twice daily, requiring a gradual upward titration over a period of 2 to 4 weeks to reach the target maintenance dose, which is frequently administered in two divided doses daily.

Population-Specific Instructions

Specific procedural adjustments apply to certain patient groups. For adults with moderate-to-severe renal impairment (Creatinine Clearance le 30 mL/min), the initial oral dose is typically adjusted to 2.5 mg daily. If the patient is undergoing hemodialysis, the 2.5 mg dose is administered after the procedure. For hypertensive pediatric patients over one month of age, the starting dose is weight-based at 0.08 mg/kg up to 5 mg daily. The general instruction for a missed dose is to skip the dose if it is close to the next scheduled time.

Recent Clinical Evidence

Research evidence / Overview of studies for Selis

Evidence for use in Chronic High Blood Pressure

Research on the use of Selis for chronic high blood pressure has been conducted through large, randomized controlled trials over many years. These trials research examined how blood pressure measurements changed over time, specifically looking at systolic and diastolic pressure 24 hours after administration. Additionally, these studies monitored long-term clinical outcomes related to systemic or functional imbalance, such as the incidence of major cardiovascular events like heart attack and stroke. The trials evaluated a broad range of adults with varying levels of essential hypertension.

Findings describe patterns observed in the studies where a difference in the blood pressure measurements that were noted in the study groups. Data show patterns related to where a difference in the observed rate of long-term cardiovascular events was noted in the observed populations. These findings help contextualize how patients reported their experience of blood pressure control over time.

Evidence for use in Symptomatic Chronic Heart Failure

Research has explored the role of Selis in conditions marked by functional limitations, specifically in adults with symptomatic chronic heart failure. Large multinational, placebo-controlled randomized trials was studied for many years to monitor changes in survival and the rate of hospitalization. The studies explored outcomes reflecting daily functioning or activity level, such as functional status (e.g., NYHA classification), and outcomes related to physical discomfort, such as shortness of breath and fatigue.

Major trials reported observations related to differences in observations related to all-cause mortality and heart failure-related hospitalizations when compared to placebo groups over the study duration. The research evidence focuses predominantly on heart failure with reduced ejection fraction (HFrEF, meaning reduced pumping function). Data for its application in heart failure where the pumping function is preserved (HFpEF) are still emerging, and certainty remains low in this specific context.

What is Still Uncertain About Selis Research

Despite the extensive research base, the scientific literature highlights certain areas where certainty remains low or evidence is limited. Comparative evidence directly assessing Selis against newer drug classes used for blood pressure or heart failure is lacking in some areas. Subgroup findings are uncertain, particularly concerning the consistency of blood pressure change across all racial and ethnic groups. These research limitations indicate that the findings describe group patterns, not personal outcomes, and the evidence highlights what is known — and what is still uncertain.

Key Studies & References

  1. Effects of enalapril on mortality in severe congestive heart failure (The CONSENSUS Trial)
  2. Enalapril - StatPearls (Indications, Dosage, and Monitoring)
  3. Enalapril: MedlinePlus Drug Information (High Blood Pressure and Heart Failure Uses)
  4. WHO Model List of Essential Medicines (Enalapril listing for essential hypertension and heart failure)

Frequently Asked Questions (FAQ)

Common questions about Selis (FAQ)

Q: Is it normal to feel a mild stomach upset when starting Selis?

Official information lists nausea as a very common reaction and diarrhoea as a common reaction. These documented gastrointestinal side effects may be experienced, particularly when beginning treatment. These reactions have been observed to decrease for some patients as the body adjusts to the medicine.

Q: How long does it typically take for Selis to start having an effect?

Antihypertensive activity is observed within one hour of administration, with the maximum reduction in blood pressure typically achieved after four to six hours. For the full, sustained therapeutic effect, optimal long-term reduction may require several weeks of therapy.

Q: Is Selis considered a short-term or long-term medication?

Treatment with this medicine for chronic conditions, such as high blood pressure or heart failure, is typically long-term. The chronic nature of the conditions treated means use is often continued long-term, as determined by the prescribing doctor's assessment.

Q: Do the common side effects of Selis usually decrease over time?

Some common side effects, such as initial dizziness or lightheadedness, may improve as the body adjusts to the medicine. However, official information indicates that other effects, such as the characteristic dry cough, can appear at any time during the course of treatment.

Q: Is Selis known to cause changes in mood or behavior?

Official documentation lists depression as a common reaction and confusion as an uncommon reaction. Other psychological reactions, such as nervousness and general sleep disorders, have also been documented in regulatory summaries.

Q: Does Selis interact with alcohol, and if so, how is this described?

Co-administration with alcohol may increase the risk of symptoms associated with low blood pressure, such as dizziness or fainting. This occurs due to potential additive effects on blood pressure, and regulatory documents indicate that caution is warranted with co-administration.

Q: What information is available about what to do if a dose of Selis is missed?

The general guidance defines two scenarios for a missed dose: taking the dose as soon as remembered, or skipping it entirely if the time is close to the next scheduled dose. The specific condition defines the action defined in the guidance.

Q: Is there a generic version of Selis available?

Yes, the medicine's active ingredient is Enalapril maleate. This compound is widely manufactured and is available in generic form under its chemical name.

Q: Does Selis affect blood sugar levels?

Official sources advise that this medicine may affect blood sugar (glucose) levels, particularly in individuals with diabetes. For patients with this pre-existing condition, increased monitoring may be recommended by a healthcare provider.

Q: What is the official recommendation regarding blood tests or monitoring while taking Selis?

Official prescribing information often recommends periodic blood tests. These tests are performed to check how well the kidneys are working (renal function) and to monitor the amount of potassium in the blood.

Q: Is Selis a type of antibiotic or pain reliever?

Selis is classified as an Angiotensin-Converting Enzyme (ACE) Inhibitor. This is a type of medicine used to manage blood pressure and provide cardiovascular support, and it is not an antibiotic or a pain reliever.

Q: Is Selis known to affect sleep patterns or cause drowsiness?

Regulatory documentation lists insomnia (difficulty sleeping) and somnolence (drowsiness) as uncommon side effects. More general sleep disorders have also been documented in official safety information.

Q: What are the common considerations for using Selis at a specific time of day?

To minimize the potential for dizziness or lightheadedness, the prescribing doctor may advise taking the first dose before bedtime. After the initial dose, official guidance indicates it can generally be taken at any time of day, but consistency in timing is a common practice.

Q: Are there any known issues with Selis and driving or operating machinery?

Official warnings state that this medicine can affect alertness due to the risk of dizziness or confusion. Due to the documented risks, caution is advised in the official warnings when operating machinery or driving.

Q: What is the process for reporting a side effect experienced with Selis?

Official guidance defines a process that involves contacting a healthcare professional for medical advice about side effects. Regulatory bodies also provide a national system, such as the FDA MedWatch program, for direct reporting of adverse reactions.

Q: What does the evidence say about the potential for dependence on Selis?

Information indicates that abrupt discontinuation of this medicine is not associated with a rapid increase in blood pressure. This observation is a factor considered when assessing the potential for physical dependence.

Q: Are there any long-term side effects associated with the use of Selis?

While the known side effects are listed regardless of treatment duration, specific safety considerations exist for long-term use. This includes the need for periodic monitoring of kidney function and potassium levels, as outlined in official prescribing information.

Q: Are there any specific vitamins or mineral supplements to be cautious of while taking Selis?

Official prescribing information describes co-administration with potassium supplements as generally avoided due to the documented risk of high serum potassium, known as hyperkalemia. Official documentation notes restrictions on the use of salt substitutes containing potassium.

Q: What research studies are mentioned in the regulatory documents supporting Selis?

Key research supporting the use of the medicine in chronic heart failure includes large, randomized, placebo-controlled trials. These major studies are often referred to by their acronyms, such as the SOLVD trial.

Q: What are the most common reasons patients stop taking Selis?

The most commonly cited reasons for discontinuation relate to frequently reported side effects. These include reactions such as headache, dizziness, fatigue, and the characteristic dry cough common to this class of medicine.

Q: Does Selis contain any common allergens, such as lactose or gluten?

Official product information lists inactive ingredients, or excipients, in the tablet formulation. Some formulations of the medicine have been documented to contain common excipients such as lactose.

Q: What is the significance of the research evidence themes cited for Selis?

The research themes focus on long-term clinical outcomes which are significant markers of the medicine's role in cardiovascular support. These outcomes, such as changes in survival and reduction in hospitalization rates, help contextualize the medicine's clinical purpose.

How should Selis be stored and disposed of?

How to Store and Dispose of Selis (Enalapril Maleate Tablets)

Official labeling requires Selis to be stored at Controlled Room Temperature, typically 20 C to 25 C (68 F to 77 F), with permitted excursions up to 30 C. To maintain stability, the tablets must be kept in their original container, which must remain tightly closed and protected from moisture and excessive heat. Do not freeze the product.

Child Safety and Disposal

Selis must be stored out of the sight and reach of children.

Regarding disposal, unused or expired Selis should not be thrown away via wastewater, drains, or household trash unless directed by a healthcare professional. Official guidance advises consulting a pharmacist about drug take-back programs or safe disposal procedures for unused medication.

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

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