Norvasc (Amlodipine)

Amlodipine, the active ingredient in Norvasc, is a calcium channel blocker presented as an oral tablet for oral use. It reduces peripheral vascular resistance, helping to control high blood pressure and to prevent angina episodes in patients with chronic stable angina or coronary artery disease.

GNH USA supplies Norvasc as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide, ensuring consistent product quality, regulatory adherence, and reliable logistics for global healthcare providers through established distribution networks and dedicated support teams.

Norvasc (amlodipine) is used in the management of cardiovascular conditions related to elevated blood pressure and myocardial oxygen demand.

- Hypertension: lowers systolic and diastolic blood pressure, improving overall blood pressure control. - Chronic stable angina: reduces the frequency of angina attacks by enhancing coronary blood flow. - Coronary artery disease: helps prevent progression of ischemic heart disease by decreasing cardiac workload.

Common Side Effects: - Headache: mild to moderate pain often occurring after the first dose. - Flushing: transient warmth and redness of the skin. - Peripheral edema: swelling of the ankles or feet due to fluid retention. - Dizziness: sensation of light‑headedness, especially when standing quickly. - Fatigue: general feeling of tiredness or lack of energy. - Palpitations: awareness of heartbeats that may feel irregular.

Serious or Rare Side Effects: - Severe hypotension: markedly low blood pressure that can cause fainting. - Myocardial infarction: rare occurrence of heart attack. - Arrhythmia: abnormal heart rhythms requiring medical attention. - Elevated liver enzymes: indication of possible hepatic stress. - Allergic reactions: rash, itching, or swelling of the face and throat. - Stevens‑Johnson syndrome: rare but serious skin disorder.

Before starting therapy, patients should be evaluated for cardiovascular status and liver function.

- Monitor blood pressure: check regularly after initiation or dose adjustments. - Assess cardiac function: use caution in patients with heart failure or recent myocardial infarction. - Adjust in hepatic impairment: consider lower doses in moderate liver disease. - Avoid abrupt discontinuation: taper gradually to prevent rebound hypertension. - Store at room temperature: keep in the original container, protect from moisture and light.

Amlodipine may interact with several drug classes, requiring careful management.

Major Interactions (Avoid): - Strong CYP3A4 inhibitors (e.g., clarithromycin, itraconazole): increase amlodipine plasma levels. - Concurrent potent vasodilators (e.g., nitroglycerin): risk of severe hypotension. - High‑dose simvastatin (>20 mg): elevated risk of statin‑related toxicity.

Moderate Interactions (Monitor Closely):\n- CYP3A4 inducers (e.g., rifampin): may reduce amlodipine effectiveness. - Beta‑blockers: additive effect on heart rate and blood pressure. - Diuretics: enhanced antihypertensive response, monitor electrolytes.