Perindopril Drug Profile

What is Perindopril?

Perindopril is an angiotensin-converting enzyme (ACE) inhibitor medication primarily used to treat high blood pressure and heart failure. As part of the ACE inhibitor class, it helps relax blood vessels and reduce the workload on the heart. This medication is available in tablet form and is typically taken once daily.

Uses

Perindopril is prescribed for several cardiovascular conditions:

• Hypertension (high blood pressure): Used as first-line treatment to lower blood pressure and reduce risk of stroke, heart attack, and kidney problems
• Heart failure: Helps improve symptoms and survival in patients with reduced heart function
• Coronary artery disease: Prescribed to reduce risk of cardiovascular events in patients with stable coronary heart disease
• Diabetic nephropathy: May help protect kidney function in diabetic patients with protein in their urine
• Post-myocardial infarction: Sometimes used to improve outcomes after a heart attack

How it works

Perindopril blocks the action of angiotensin-converting enzyme, which normally converts angiotensin I to angiotensin II, a powerful blood vessel constrictor. By inhibiting this enzyme, the medication allows blood vessels to relax and widen, reducing blood pressure and decreasing the heart’s workload. This mechanism also helps reduce fluid retention and improves blood flow throughout the body.

Side effects

Common side effects:

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• Dry, persistent cough
• Dizziness or lightheadedness
• Headache
• Fatigue or weakness
• Nausea
• Back pain
• Upper respiratory tract symptoms
• Taste changes

Serious side effects requiring immediate medical attention:

• Angioedema (swelling of face, lips, tongue, or throat)
• Severe hypotension (extremely low blood pressure)
• Hyperkalemia (dangerously high potassium levels)
• Kidney function deterioration
• Severe allergic reactions

Warnings and precautions

• Pregnancy: Perindopril is contraindicated during pregnancy, especially in the second and third trimesters, as it can cause fetal harm including kidney problems and death
• Kidney disease: Patients with existing kidney problems require careful monitoring as ACE inhibitors can worsen kidney function in some cases
• Angioedema history: Individuals with a previous history of angioedema should avoid this medication due to increased risk of recurrence
• Electrolyte monitoring: Regular blood tests are needed to monitor potassium levels and kidney function, especially when starting treatment
• Dehydration risk: Patients should maintain adequate fluid intake and inform their doctor about vomiting, diarrhea, or excessive sweating

Interactions

• Potassium supplements and salt substitutes: Can increase risk of dangerous potassium levels when combined with perindopril
• Diuretics: May cause excessive blood pressure lowering, especially when starting treatment
• NSAIDs (ibuprofen, naproxen): Can reduce the effectiveness of perindopril and increase kidney damage risk
• Lithium: ACE inhibitors can increase lithium levels in the blood, leading to toxicity
• Diabetes medications: May enhance blood sugar-lowering effects, requiring glucose monitoring
• Other blood pressure medications: Combined use requires careful monitoring to prevent excessive blood pressure reduction
• Aliskiren: Combination increases risk of kidney problems, low blood pressure, and high potassium
• Gold injections: Rare reports of facial flushing and low blood pressure when used together

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Dosage

Typical adult dosages vary based on the condition being treated:

• Hypertension: Starting dose is usually 4mg once daily, which may be increased to 4-8mg daily based on blood pressure response
• Heart failure: Treatment typically begins with 2mg once daily, gradually increased to 4mg daily as tolerated
• Coronary artery disease: Usually 4mg once daily, may be increased to 8mg daily

Dosage adjustments may be necessary for elderly patients or those with kidney problems. Your healthcare provider will determine the most appropriate dose based on your individual medical condition, response to treatment, and other factors. Do not adjust your dose without consulting your doctor.

Sources: FDA DailyMed drug labels (public domain), BNF, WHO Essential Medicines List. This article is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before starting or stopping any medication.

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