Norvasc (Amlodipine)

Amlodipine, the active ingredient in Norvasc, is a calcium channel blocker presented as a tablet for oral use. It treats hypertension and angina in adults. It works by relaxing blood vessels, which helps lower blood pressure and improves blood flow to the heart. It is commonly prescribed for patients with high blood pressure or stable chest pain.

GNH USA supplies Norvasc as a licensed, GDP-compliant international pharmaceutical supplier serving hospitals, pharmacies, clinics and healthcare providers across multiple regions worldwide globally.

Amlodipine, a calcium channel blocker, is used to manage conditions related to high blood pressure and coronary artery disease. - Hypertension: reduces systolic and diastolic blood pressure, improving cardiovascular risk profile. - Chronic stable angina: alleviates chest pain by improving myocardial oxygen supply. - Coronary artery disease: helps prevent ischemic events by lowering vascular resistance.

Amlodipine may cause a range of adverse reactions, most of which are mild and reversible.

Common Side Effects: - Headache: mild to moderate headache, often early in treatment. - Peripheral edema: swelling of ankles or feet due to fluid retention. - Flushing: transient warmth and redness of the skin. - Dizziness: light‑headedness, especially on standing.

Serious or Rare Side Effects: - Hypotension: significant blood pressure drop that may cause fainting. - Hepatotoxicity: elevated liver enzymes or hepatitis. - Severe allergic reaction: rash, itching, swelling, or breathing difficulty.

When prescribing amlodipine, clinicians should consider several precautionary measures to ensure safe use. - Blood pressure monitoring: check baseline and periodic readings to avoid excessive hypotension. - Heart failure: use cautiously in patients with severe heart failure due to potential fluid retention. - Liver impairment: dose adjustment may be needed in moderate to severe hepatic dysfunction. - Concomitant CYP3A4 inhibitors: monitor for increased plasma levels when used with strong inhibitors. - Pregnancy and lactation: avoid unless benefits outweigh risks, as safety data are limited. - Store at ambient temperature: keep below 25°C, in original container, protect from moisture and light.

Amlodipine can interact with other medicines, altering its effectiveness or safety profile.

Major Interactions (Avoid): - Strong CYP3A4 inhibitors (e.g., ketoconazole, clarithromycin): may increase amlodipine concentrations, risking hypotension. - Simvastatin high doses: combined use can raise simvastatin levels, increasing risk of myopathy.

Moderate Interactions (Monitor Closely): - CYP3A4 inducers (e.g., rifampicin, phenytoin): may reduce amlodipine effectiveness. - Beta‑blockers: additive effect on blood pressure and heart rate. - Diuretics: may enhance antihypertensive effect, requiring monitoring for volume depletion.