Istin

Amlodipine, the active ingredient in Istin, is a calcium channel blocker presented as an oral tablet for oral use. It is employed to manage high blood pressure and certain types of chest pain in adult patients.

GNH USA supplies Istin as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Amlodipine is used to treat conditions related to cardiovascular pressure and blood flow. - Hypertension: lowers elevated blood pressure and reduces the risk of cardiovascular complications. - Chronic stable angina: improves exercise tolerance by decreasing myocardial oxygen demand. - Coronary artery disease: helps prevent angina episodes and supports overall cardiac perfusion.

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

Common Side Effects: - Headache: mild to moderate intensity. - Peripheral edema: swelling of ankles or lower legs. - Flushing: transient warmth and redness of the skin. - Dizziness: especially upon standing quickly. - Fatigue: general sense of tiredness. - Nausea: occasional upset stomach.

Serious or Rare Side Effects: - Severe hypotension: marked drop in blood pressure requiring medical attention. - Myocardial infarction: rare occurrence of heart attack. - Hepatic dysfunction: abnormal liver enzyme elevations. - Allergic reactions: rash, itching, or swelling of the face and throat.

Before initiating therapy with amlodipine, consider the following safety measures. - Blood pressure monitoring: check baseline and periodic readings to assess response. - Cardiac function assessment: evaluate for existing heart failure or recent myocardial infarction. - Concomitant medications: review for drugs that may potentiate hypotensive effects. - Pregnancy and lactation: discuss potential risks with a healthcare professional. - Renal or hepatic impairment: adjust therapy based on organ function. - Store at ambient temperature: keep below 25 °C, retain in original packaging, protect from moisture and direct sunlight.

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

Major Interactions (Avoid): - Simultaneous use with strong CYP3A4 inhibitors (e.g., clarithromycin, itraconazole): may increase amlodipine plasma levels and risk of hypotension. - Co‑administration with other potent antihypertensives (e.g., beta‑blockers, ACE inhibitors): can cause excessive blood pressure reduction.

Moderate Interactions (Monitor Closely): - CYP3A4 inducers (e.g., rifampicin, carbamazepine): may lower amlodipine concentrations, reducing effectiveness. - Grapefruit juice: can modestly raise drug levels, requiring blood pressure monitoring. - Diuretics: may enhance orthostatic hypotension, especially in the elderly.