Isoket

Isosorbide Dinitrate, the active ingredient in Isoket, is an organic nitrate presented as an oral tablet for oral use. Originating from the European market, it acts as a vasodilator to reduce cardiac preload and afterload, thereby relieving angina pectoris and supporting treatment of chronic heart failure in adult patients.

GNH USA supplies Isoket as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide, ensuring adherence to stringent quality standards, reliable batch consistency, and comprehensive regulatory documentation for global distribution.

Isoket (isosorbide dinitrate) is used in the management of cardiovascular conditions that benefit from nitrate‑mediated vasodilation.

- Angina pectoris: reduces frequency and severity of chest pain episodes. - Chronic heart failure: improves cardiac output and exercise tolerance. - Prophylaxis of angina attacks: prevents angina episodes during exertion or stress.

Isoket may cause a range of adverse reactions, most of which are related to its vasodilatory action.

Common Side Effects: - Headache: throbbing pain often occurring shortly after dosing. - Dizziness or light‑headedness: due to transient blood pressure reduction. - Flushing: warm sensation and reddening of the skin. - Hypotension: noticeable drop in blood pressure, especially when standing. - Tachycardia: compensatory increase in heart rate. - Nausea: mild gastrointestinal upset.

Serious or Rare Side Effects: - Severe hypotension: can lead to fainting or shock. - Syncope: sudden loss of consciousness. - Myocardial infarction: rare but possible in susceptible patients. - Methemoglobinemia: abnormal hemoglobin affecting oxygen delivery. - Severe allergic reactions: rash, swelling, or anaphylaxis. - Life‑threatening bradycardia: markedly slow heart rate.

When prescribing or dispensing Isoket, consider the following safety measures.

- Monitor blood pressure: check for hypotension, especially after the first dose. - Avoid concurrent PDE5 inhibitors: risk of profound hypotension. - Assess tolerance development: continuous use may reduce efficacy. - Use cautiously in severe anemia or increased intracranial pressure: vasodilation may exacerbate symptoms. - Pregnancy and lactation: safety not established; weigh benefits against potential risks. - Store at ambient temperature: keep in the original container, protect from moisture and light.

Isoket can interact with several drug classes, requiring attention to avoid adverse events.

Major Interactions (Avoid): - Phosphodiesterase‑5 inhibitors (e.g., sildenafil): may cause severe hypotension. - Other nitrates (e.g., nitroglycerin): additive vasodilatory effect leading to dangerous blood pressure drops. - Potent antihypertensives (e.g., ACE inhibitors, beta‑blockers): may produce excessive hypotension.

Moderate Interactions (Monitor Closely): - Alcohol: can enhance hypotensive effects. - Diuretics: may increase risk of volume depletion and low blood pressure. - Azole antifungals (e.g., ketoconazole): may raise plasma levels of isosorbide dinitrate.