Nicardipine Aguettant (Nicardipine Hydrochloride)

Nicardipine is a calcium channel blocker used in the management of cardiovascular conditions that involve elevated vascular tone.

• Hypertension: provides controlled reduction of systolic and diastolic blood pressure in adults.
• Angina pectoris: improves coronary blood flow and reduces frequency of chest pain episodes.
• Hypertensive emergency (IV use): delivers rapid blood pressure lowering when immediate control is required.

• Nicardipine blocks L-type calcium channels on vascular smooth muscle cells, inhibiting calcium influx that is essential for muscle contraction. This results in arterial vasodilation, decreased peripheral vascular resistance, and consequently lower arterial blood pressure, while also enhancing coronary artery blood flow to relieve myocardial ischemia.

Common side effects are generally mild and transient.

Common Side Effects

• Flushing: sensation of warmth and redness, especially of the face.
• Headache: mild to moderate intensity, often related to vasodilation.
• Tachycardia: increased heart rate as a reflex response.
• Hypotension: occasional drop in blood pressure, particularly with rapid infusion.
• Nausea: mild gastrointestinal discomfort.
• Dizziness: feeling of light‑headedness.

Serious or Rare Side Effects

• Severe hypotension: marked drop in blood pressure requiring medical intervention.
• Myocardial infarction: rare occurrence of heart attack.
• Arrhythmias: abnormal heart rhythms, including ventricular ectopy.
• Allergic reaction: rash, itching, or anaphylaxis.
• Liver enzyme elevation: abnormal hepatic function tests.
• Thrombocytopenia: reduced platelet count.

Use nicardipine with careful monitoring in specific clinical situations.

• Renal impairment: monitor blood pressure and adjust infusion rate as needed.
• Hepatic impairment: use with caution; observe for increased drug exposure.
• Concomitant beta‑blockers: watch for additive bradycardia or hypotension.
• Pregnancy: administer only if clearly needed after risk‑benefit assessment.
• Elderly patients: start at lower infusion rates and monitor closely.
• Store at 2-8°C: keep refrigerated, protect from light, do not freeze or shake.

Nicardipine may interact with other drugs affecting cardiovascular tone or metabolism.

Major Interactions (Avoid)

• Strong CYP3A4 inhibitors (e.g., ketoconazole): may increase nicardipine plasma levels.
• Other potent vasodilators (e.g., nitroglycerin): risk of severe hypotension.
• Grapefruit juice: can raise systemic exposure.

Moderate Interactions (Monitor Closely)

• Calcium supplements or antacids: may reduce absorption.
• Beta‑blockers: additive effect on heart rate and blood pressure.
• Diuretics: may enhance hypotensive response.
• ACE inhibitors or ARBs: monitor for excessive blood pressure drop.
• Antihypertensive combination therapy: adjust dosing and observe patient response.