Ismo

Isosorbide mononitrate, the active ingredient in Ismo, is a nitrate vasodilator presented as an oral tablet for oral use. It treats angina pectoris and chronic heart failure in adult patients.

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

Isosorbide mononitrate is used in the management of coronary artery disease and heart failure, acting as a nitrate vasodilator to improve myocardial oxygen balance.

- Angina pectoris: reduces the frequency and severity of chest pain episodes. - Chronic heart failure: improves exercise tolerance and alleviates dyspnea. - Stable angina: provides prophylactic relief of ischemic symptoms during physical exertion.

Isosorbide mononitrate may cause a range of adverse reactions, from mild to severe.

Common Side Effects: - Headache: throbbing pain often occurring shortly after dosing. - Dizziness or light‑headedness: related to blood pressure reduction. - Flushing: warm sensation with reddening of the skin. - Nausea or upset stomach: gastrointestinal discomfort. - Low blood pressure (hypotension): especially when standing. - Palpitations: awareness of heartbeat irregularities.

Serious or Rare Side Effects: - Severe hypotension: marked drop in blood pressure requiring medical attention. - Syncope: sudden loss of consciousness. - Myocardial infarction: rare but possible in susceptible individuals. - Allergic reactions: rash, itching, swelling, or anaphylaxis. - Methemoglobinemia: rare disorder causing reduced oxygen delivery.

Before initiating therapy, clinicians should consider several safety factors.

- Renal impairment: adjust dose or monitor closely in patients with reduced kidney function. - Concomitant PDE‑5 inhibitors: avoid due to risk of profound hypotension. - Concurrent antihypertensives: monitor blood pressure to prevent excessive lowering. - Anemia or low hemoglobin: use cautiously as vasodilation may exacerbate symptoms. - Abrupt discontinuation: taper to avoid rebound angina. - Store at room temperature: keep in the original container, protect from moisture and direct sunlight.

Isosorbide mononitrate interacts with several drug classes; awareness helps prevent adverse events.

Major Interactions (Avoid): - Other nitrates (e.g., nitroglycerin): additive vasodilation may cause severe hypotension. - Phosphodiesterase‑5 inhibitors (e.g., sildenafil): risk of dangerous blood pressure fall. - Potent antihypertensive agents: may lead to excessive blood pressure reduction.

Moderate Interactions (Monitor Closely): - Diuretics: can enhance hypotensive effect, requiring blood pressure monitoring. - Alcohol: may increase dizziness and hypotension. - Beta‑blockers: additive effect on heart rate and blood pressure, necessitating dose adjustments.