Mepril (Enalapril Maleate)

Mepril (enalapril) acts on the renin‑angiotensin‑aldosterone system to manage cardiovascular conditions.

• Hypertension: reduces systolic and diastolic pressure, helping achieve target blood pressure levels.
• Heart failure: improves symptoms and reduces hospitalisation by decreasing cardiac workload.
• Diabetic nephropathy: slows progression of kidney damage associated with diabetes.

• Enalapril is converted in the body to enalaprilat, which binds to and inhibits angiotensin‑converting enzyme (ACE). This blockade prevents the conversion of angiotensin I to the potent vasoconstrictor angiotensin II and reduces aldosterone secretion, resulting in vasodilation, decreased peripheral resistance, and lowered blood pressure.

Adverse reactions may occur with any ACE inhibitor and should be monitored.

Common Side Effects

• Cough: dry, persistent throat irritation.
• Dizziness: especially upon standing.
• Headache: mild to moderate intensity.
• Fatigue: general feeling of tiredness.
• Hyperkalemia: elevated blood potassium levels.
• Nausea: occasional stomach upset.

Serious or Rare Side Effects

• Angioedema: swelling of face, lips, tongue, or airway.
• Severe hypotension: marked drop in blood pressure.
• Acute renal failure: sudden loss of kidney function.
• Liver dysfunction: abnormal liver enzyme elevations.
• Neutropenia: reduced white blood cell count.
• Stevens‑Johnson syndrome: severe skin reaction.

Before initiating therapy, consider patient‑specific factors and monitor appropriately.

• Renal function: assess baseline creatinine and adjust if impaired.
• Electrolytes: monitor potassium, especially with concomitant potassium‑sparing agents.
• Pregnancy: avoid use unless clearly needed; discuss risks with a healthcare professional.
• Elderly: start at lower dose and titrate cautiously.
• Drug interactions: review all concomitant medications for potential ACE‑inhibitor interactions.
• Store at ambient temperature: keep below 25 °C, retain in original packaging, protect from moisture and direct sunlight.

Enalapril may interact with several drug classes; awareness helps prevent adverse events.

Major Interactions (Avoid)

• Aliskiren: combined use can cause excessive renal impairment and hyperkalemia.
• Lithium: may increase lithium levels, risking toxicity.
• Potassium‑sparing diuretics or supplements: can precipitate severe hyperkalemia.

Moderate Interactions (Monitor Closely)

• Non‑steroidal anti‑inflammatory drugs (NSAIDs): may reduce antihypertensive effect and impair renal function.
• Diuretics: may enhance hypotensive response, especially during initiation.
• Antihyperglycemics: may require dose adjustment due to altered glucose control.