Nifedipina Mylan Generics Italia (Nifedipine)

Nifedipine acts on the cardiovascular system to lower blood pressure and improve blood flow, making it useful in several vascular conditions.

• Hypertension: reduces systolic and diastolic pressure by vasodilation.
• Angina pectoris: relieves chest pain by increasing coronary blood supply.
• Raynaud's phenomenon: diminishes vasospasm in peripheral arteries, improving circulation.

• Nifedipine selectively blocks L‑type calcium channels in vascular smooth muscle and cardiac myocytes, preventing calcium influx during depolarization. This inhibition leads to relaxation of arterial smooth muscle, resulting in vasodilation, decreased peripheral resistance, and lowered arterial blood pressure, while also reducing myocardial oxygen demand.

Nifedipine may cause a range of adverse reactions, from mild to serious.

Common Side Effects

• Headache: mild to moderate intensity.
• Flushing: warmth and redness of the skin.
• Peripheral edema: swelling of ankles or feet.
• Dizziness or light‑headedness.
• Tachycardia: increased heart rate.
• Nausea or abdominal discomfort.

Serious or Rare Side Effects

• Severe hypotension: marked drop in blood pressure.
• Myocardial infarction: rare but possible in high‑risk patients.
• Hepatic dysfunction: elevated liver enzymes.
• Allergic reactions: rash, itching, or anaphylaxis.
• Cardiac arrhythmias: irregular heart rhythms.
• Life‑threatening hypotensive shock.

Before initiating therapy, clinicians should evaluate patient‑specific factors and monitor for potential complications.

• Blood pressure monitoring: ensure adequate control and avoid excessive drops.
• Cardiac assessment: review history of heart failure or recent myocardial infarction.
• Concomitant medications: assess for drugs that may enhance hypotensive effects.
• Hepatic function: use caution in patients with liver impairment.
• Discontinuation: avoid abrupt cessation to prevent rebound hypertension.
• Store at room temperature: keep in the original container, protect from moisture and direct sunlight.

Nifedipine can interact with several medicines, altering its efficacy or safety profile.

Major Interactions (Avoid)

• Strong CYP3A4 inhibitors (e.g., ketoconazole, itraconazole): may increase plasma levels and risk of toxicity.
• Grapefruit juice: can markedly raise nifedipine concentrations.
• High‑dose simvastatin: increased risk of myopathy.

Moderate Interactions (Monitor Closely)

• Other antihypertensives (e.g., beta‑blockers, ACE inhibitors): additive blood‑pressure lowering effect.
• CYP3A4 inducers (e.g., rifampin, carbamazepine): may reduce therapeutic levels.
• Diuretics: may enhance orthostatic hypotension.