Norvasc (Amlodipine)

Amlodipine, the active ingredient in Norvasc, is a calcium channel blocker (dihydropyridine) presented as a tablet for oral use. It lowers elevated blood pressure and relieves chest pain caused by reduced blood flow to the heart, making it suitable for adults with hypertension or chronic stable angina.

GNH USA supplies Norvasc as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide. The company follows stringent quality standards and provides regulatory documentation to support import and distribution across multiple regions.

Norvasc (amlodipine) acts on the cardiovascular system to manage conditions related to high blood pressure and myocardial oxygen demand. - Hypertension: reduces systolic and diastolic blood pressure, helping to prevent cardiovascular complications. - Chronic stable angina: improves coronary blood flow, decreasing frequency of chest pain episodes. - Coronary artery disease: lowers myocardial workload and may reduce the risk of ischemic events.

Amlodipine may cause a range of adverse reactions, which are generally classified by frequency and severity. 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. Serious or Rare Side Effects: - Hypotension: significant blood pressure drop that may cause fainting. - Myocardial infarction: rare occurrence of a heart attack. - 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. - Cardiac function assessment: evaluate for heart failure or recent myocardial infarction before initiation. - Liver impairment: use caution and consider dose adjustment in patients with hepatic dysfunction. - Concomitant CYP3A4 inhibitors: monitor for increased drug levels when combined with strong inhibitors. - Pregnancy and lactation: avoid use unless benefits outweigh potential risks, as safety data are limited. - Store at ambient temperature: keep tablets below 25°C in the original container, protected 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 plasma concentrations, raising risk of hypotension. - Simultaneous use with other potent antihypertensives: can cause additive blood pressure lowering. Moderate Interactions (Monitor Closely): - CYP3A4 inducers (e.g., rifampicin, carbamazepine): may reduce amlodipine levels, diminishing efficacy. - Grapefruit juice: can modestly increase drug exposure. - Non‑steroidal anti‑inflammatory drugs (NSAIDs): may attenuate antihypertensive effect. - Digoxin: monitor for possible increase in serum digoxin levels.