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Enalapril Maleate

Enalapril Maleate, an angiotensin-converting enzyme (ACE) inhibitor, has been the subject of numerous clinical trials investigating its efficacy in treating various medical conditions. These trials have explored its potential in managing hypertension, cardiovascular diseases, kidney disorders, and even in combination with other medications. This article summarizes the key findings from several clinical trials involving Enalapril Maleate, providing insights into its effectiveness and potential applications in different medical scenarios.

Table of Contents

What is Enalapril Maleate?

Enalapril Maleate is a medication that belongs to a class of drugs called angiotensin-converting enzyme (ACE) inhibitors. It is widely used to treat various cardiovascular and kidney-related conditions. Enalapril Maleate is also known by other names such as Vasotec, Renitec, or Lameiya, depending on the manufacturer[1][2].

Conditions Treated by Enalapril Maleate

Enalapril Maleate is prescribed to treat several medical conditions, including:

  • Hypertension (High Blood Pressure): Enalapril is commonly used to lower blood pressure in patients with primary hypertension[3].
  • Diabetic Kidney Disease (Nephropathy): It helps protect the kidneys from further damage in patients with diabetes[2].
  • Heart Failure: Enalapril can improve heart function in patients with congestive heart failure[3].
  • IgA Nephropathy: This is a kidney disease where Enalapril may help reduce protein in the urine[4].

How Enalapril Maleate Works

Enalapril Maleate works by inhibiting the angiotensin-converting enzyme (ACE). This enzyme is responsible for producing a substance called angiotensin II, which causes blood vessels to narrow. By blocking this enzyme, Enalapril helps blood vessels relax and widen, leading to lower blood pressure and improved blood flow[5].

In the body, Enalapril is converted to its active form, enalaprilat, by liver enzymes. This active form is what provides the therapeutic effects of the medication[5].

Dosage and Administration

Enalapril Maleate is typically taken orally in tablet form. The dosage can vary depending on the condition being treated and the individual patient’s needs. Some common dosages observed in clinical trials include:

  • 10 mg daily for hypertension, which may be increased to 20 mg if needed[3]
  • 5 mg twice daily for some conditions, which may be adjusted by your doctor[5]

It’s important to follow your doctor’s instructions carefully and not to adjust your dosage without consulting them first.

Combination Therapies

Enalapril Maleate is sometimes used in combination with other medications to enhance its effectiveness or treat multiple conditions simultaneously. Some examples include:

  • Enalapril with Folic Acid: This combination is being studied for its potential to prevent stroke and reduce the risk of cardiovascular events in patients with hypertension[3].
  • Enalapril with Nitrendipine: A combination used to treat isolated systolic hypertension, especially in older patients[6].
  • Enalapril with Amlodipine: A fixed-dose combination that may provide more convenient dosing for patients with hypertension[1].

Clinical Studies and Research

Enalapril Maleate has been the subject of numerous clinical studies to evaluate its effectiveness and safety in various conditions:

  • Stroke Prevention: The China Stroke Primary Prevention Trial is investigating whether the combination of Enalapril and folic acid is more effective in preventing stroke compared to Enalapril alone in patients with hypertension[3].
  • Cardiovascular Protection in Rheumatoid Arthritis: A study is examining whether Enalapril can reduce arterial stiffness in patients with rheumatoid arthritis, potentially offering cardiovascular protection[5].
  • Kidney Protection: Research is ongoing to compare the effectiveness of Enalapril with newer medications like SGLT2 inhibitors in protecting kidney function in patients with diabetic kidney disease[2].

Potential Side Effects and Precautions

Like all medications, Enalapril Maleate can cause side effects. Common side effects may include:

  • Dizziness
  • Headache
  • Fatigue
  • Dry cough

More serious side effects, though rare, can include:

  • Allergic reactions
  • Swelling of the face, lips, tongue, or throat
  • Significant changes in kidney function

It’s important to inform your doctor of any side effects you experience. Additionally, Enalapril may not be suitable for everyone, particularly pregnant women or those planning to become pregnant, as it can cause harm to the developing fetus[7].

Always consult with your healthcare provider about the potential risks and benefits of Enalapril Maleate for your specific condition.

Trial Focus Key Findings Potential Impact
Arterial Stiffness in Rheumatoid Arthritis Evaluating effect of Enalapril Maleate on artery stiffness in RA patients May improve cardiovascular outcomes in RA patients
Stroke Prevention Enalapril Maleate with folic acid more effective in preventing stroke Potential new strategy for stroke prevention in hypertensive patients
Chronic Kidney Disease Prevention Enalapril Maleate with folic acid may prevent renal function decline Could slow progression of kidney disease in hypertensive patients
Cardiovascular Protection in Cancer Treatment Investigating Enalapril’s effect on doxorubicin exposure in breast cancer May protect heart during chemotherapy
Post-Preeclampsia Cardiovascular Health Studying Enalapril’s effect on heart function after preterm pre-eclampsia Could improve long-term cardiovascular outcomes for affected women
Comparison with SGLT2 Inhibitors Comparing Enalapril to Empagliflozin in diabetic kidney disease May inform treatment choices for diabetic nephropathy

FAQ

  • What is Enalapril Maleate and how does it work? Enalapril Maleate is an angiotensin-converting enzyme (ACE) inhibitor. It works by blocking the production of angiotensin II, a substance that narrows blood vessels. This helps relax and widen blood vessels, making it easier for the heart to pump blood and lowering blood pressure.
  • In which medical conditions has Enalapril Maleate been studied? Enalapril Maleate has been studied in various conditions including hypertension, cardiovascular diseases, diabetic kidney disease, and rheumatoid arthritis. It has also been investigated in combination with other drugs for potential synergistic effects.
  • Can Enalapril Maleate help in preventing stroke? Yes, clinical trials have shown that Enalapril Maleate, especially when combined with folic acid, can be effective in preventing stroke among patients with hypertension. The China Stroke Primary Prevention Trial investigated this potential.
  • Is Enalapril Maleate safe for use during pregnancy? Enalapril Maleate is generally not recommended during pregnancy, especially in the second and third trimesters, as it may cause harm to the developing fetus. However, some studies have explored its use in the postpartum period for women who had preterm pre-eclampsia.
  • Are there any ongoing studies comparing Enalapril Maleate to newer medications? Yes, there are ongoing studies comparing Enalapril Maleate (an ACE inhibitor) to newer medications such as SGLT2 inhibitors in the treatment of diabetic kidney disease. These studies aim to determine which medication might be more effective in preserving kidney function.

Ongoing Clinical Trials on Enalapril Maleate

  • Study of stopping heart failure medications in patients with non-ischemic cardiomyopathy who responded very well to cardiac resynchronization therapy

    Recruiting

    1 1 1 1
    Investigated drugs:
    Spain

  • Study on Enalapril for Adults with Painful Venous Malformations

    Recruiting

    1 1 1
    Investigated diseases:
    Investigated drugs:
    Norway

  • Study on Preventing Heart Disease in Diabetes Patients Using Eprosartan Mesilate and Drug Combination

    Not yet recruiting

    1 1 1 1
    Investigated drugs:
    Austria Spain

  • A study testing cagrilintide and semaglutide combination for kidney damage in people with chronic kidney disease and type 2 diabetes who are overweight or obese

    Not recruiting

    1 1
    Investigated diseases:
    Investigated drugs:
    France Greece Hungary Poland Slovakia Spain

  • Study on How Sacubitril/Valsartan and Enalapril Affect Lung Pressure in Patients with Heart Failure with Reduced Ejection Fraction

    Not recruiting

    1 1 1
    Investigated drugs:
    Poland

  • Study of XXB750 and Drug Combination for Patients with Heart Failure

    Not recruiting

    1 1
    Investigated drugs:
    Bulgaria Czechia Denmark France Germany Hungary +5

  • Study Comparing Aliskiren and Enalapril for Patients with C3 Glomerulopathy

    Not recruiting

    1 1 1
    Investigated diseases:
    Investigated drugs:
    Sweden

Glossary

  • ACE inhibitor: A type of medication that helps relax blood vessels by preventing the body from producing angiotensin II, a substance that narrows blood vessels.
  • Hypertension: High blood pressure, a condition where the force of blood against artery walls is consistently too high.
  • Cardiovascular disease: A general term for conditions affecting the heart or blood vessels, often referred to as heart disease.
  • Diabetic kidney disease: A complication of diabetes that affects the kidneys, potentially leading to chronic kidney disease.
  • Stroke: A medical condition where poor blood flow to the brain results in cell death, potentially causing disability or death.
  • Pre-eclampsia: A pregnancy complication characterized by high blood pressure and signs of damage to other organ systems, most often the liver and kidneys.
  • Glomerular filtration rate (GFR): A measure of how well the kidneys are filtering waste from the blood.
  • Urine Albumin Creatinine Ratio (UACR): A test that checks for kidney damage by measuring the amount of albumin in urine compared to creatinine.
  • SGLT2 inhibitor: A class of medications used to lower blood sugar in type 2 diabetes by helping the kidneys remove glucose from the body through urine.
  • Rheumatoid Arthritis: An autoimmune disorder that primarily affects joints, causing pain and inflammation.

References

  1. https://clinicaltrials.gov/study/NCT01822639
  2. https://clinicaltrials.gov/study/NCT05373004
  3. https://clinicaltrials.gov/study/NCT00794885
  4. https://clinicaltrials.gov/study/NCT00367562
  5. https://clinicaltrials.gov/study/NCT03667131
  6. https://clinicaltrials.gov/study/NCT01074281
  7. https://clinicaltrials.gov/study/NCT03466333