Monosordil (Isosorbide Mononitrate)

Isosorbide Mononitrate, the active ingredient in Monosordil, is an organic nitrate presented as an oral tablet for oral use. It is used to relieve chest pain associated with angina pectoris by improving blood flow to the heart and reducing myocardial oxygen demand.

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

Monosordil (isosorbide mononitrate) belongs to the organic nitrate class and is employed in the management of coronary artery disease‑related chest pain.

- Chronic stable angina: reduces the frequency of chest pain episodes. - Effort‑induced angina: improves exercise tolerance and delays onset of symptoms. - Angina pectoris: decreases myocardial oxygen demand, providing symptomatic relief.

Common Side Effects: - Headache: mild to moderate, often transient. - Dizziness or light‑headedness, especially on standing. - Flushing: warm sensation of skin redness. - Hypotension: modest drop in blood pressure. - Nausea or gastrointestinal discomfort. - Palpitations or increased heart rate.

Serious or Rare Side Effects: - Severe hypotension leading to syncope. - Acute myocardial infarction in susceptible patients. - Allergic reactions such as rash, pruritus, or angioedema. - Life‑threatening arrhythmias. - Hepatic dysfunction or elevated liver enzymes. - Methemoglobinemia, a rare blood disorder.

Before initiating therapy, clinicians should evaluate individual risk factors and monitor patients for adverse reactions.

- Assess cardiovascular status: check baseline blood pressure and heart rate. - Avoid concurrent nitrate therapy: additive vasodilatory effect may cause severe hypotension. - Monitor for orthostatic hypotension: advise patients to rise slowly from sitting or lying positions. - Use caution in hepatic impairment: dose adjustment may be required. - Pregnancy and lactation: safety not established; benefits must outweigh potential risks. - Store at room temperature: keep in the original container, protect from moisture and light.

Isosorbide mononitrate can interact with several drug classes, requiring careful management.

Major Interactions (Avoid): - Other organic nitrates: additive vasodilatory effect may cause profound hypotension. - Phosphodiesterase‑5 inhibitors (e.g., sildenafil, tadalafil): risk of severe blood pressure drop.

Moderate Interactions (Monitor Closely): - Antihypertensive agents: may enhance blood‑pressure‑lowering effects. - Alcohol: can increase vasodilatory responses and dizziness. - Diuretics: may potentiate hypotensive episodes, especially in the elderly.