Product image of Isorem (Isosorbide Dinitrate) supplied by GNH India

Isorem

Active Ingredient:
Isosorbide Dinitrate
Origin:
EU

Isorem (Isosorbide Dinitrate)

Isosorbide dinitrate, the active ingredient in Isorem, is a nitrate vasodilator presented as a sublingual formulation for sublingual use. It is employed to relieve acute episodes of angina pectoris and to reduce the frequency of angina attacks in patients with coronary artery disease.

GNH India supplies Isorem as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide. The company adheres to stringent quality standards and provides reliable sourcing for regulated markets. Our distribution network ensures timely delivery and compliance with local regulatory requirements.

Manufacturer / TM Owner

Remedica Ltd

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Indications & Clinical Uses

  • Isosorbide dinitrate is a nitrate vasodilator used in the management of angina.
  • Acute angina pectoris: provides rapid relief of chest pain by dilating coronary vessels.
  • Prophylaxis of angina: reduces the frequency of angina attacks during daily activities.
  • Chronic stable angina: improves exercise tolerance by decreasing myocardial oxygen demand.

How It Works

  • Isosorbide dinitrate is enzymatically converted to nitric oxide, which activates soluble guanylate cyclase in vascular smooth muscle. The resulting increase in cyclic GMP leads to relaxation of both venous and arterial smooth muscle, producing venodilation, reduced preload, and modest arterial dilation, thereby lowering myocardial oxygen consumption and alleviating ischemic chest pain.

Side Effects

Isosorbide dinitrate may cause a range of adverse reactions, most of which are dose‑related and transient.

Common Side Effects

  • Headache: throbbing pain often occurring shortly after administration.
  • Dizziness or light‑headedness: due to reduced blood pressure.
  • Flushing: warm sensation and reddening of the skin.
  • Hypotension: noticeable drop in blood pressure, especially when standing.
  • Nausea: mild gastrointestinal discomfort.
  • Palpitations: awareness of heartbeat acceleration.

Serious or Rare Side Effects

  • Severe hypotension: marked drop in blood pressure requiring medical attention.
  • Syncope: sudden loss of consciousness.
  • Methemoglobinemia: abnormal hemoglobin that impairs oxygen delivery.
  • Reflex tachycardia: rapid heart rate as a compensatory response.
  • Allergic reactions: rash, itching, or swelling that may progress to anaphylaxis.
  • Ischemic paradox: worsening chest pain despite therapy.

Precautions & Warnings

  • Before prescribing Isosorbide dinitrate, clinicians should consider several safety aspects.
  • Avoid use in patients with severe hypotension: monitor blood pressure before administration.
  • Do not combine with phosphodiesterase‑5 inhibitors: risk of profound hypotension.
  • Use with caution in patients with anemia or increased intracranial pressure: may exacerbate symptoms.
  • Educate patients on proper sublingual placement: avoid swallowing the tablet.
  • Pregnancy and lactation: safety not established; weigh benefits against potential risks.
  • Store at room temperature: keep in original container, protect from moisture and light.

Avoid Interactions

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

Major Interactions (Avoid)

  • Sildenafil and other PDE‑5 inhibitors: may cause severe hypotension.
  • Concurrent nitrates (e.g., nitroglycerin): additive vasodilatory effect leading to dangerous blood pressure drops.
  • Alcohol: enhances hypotensive effect and may increase dizziness.

Moderate Interactions (Monitor Closely)

  • Antihypertensives (ACE inhibitors, beta‑blockers): may augment blood pressure‑lowering effect.
  • Diuretics: can potentiate orthostatic hypotension.
  • Azole antifungals (e.g., ketoconazole): may increase plasma levels of isosorbide dinitrate.

Frequently Asked Questions

Isorem contains isosorbide dinitrate, a nitrate vasodilator prescribed to relieve acute episodes of angina pectoris and to prevent recurrent chest pain in patients with coronary artery disease. It works by widening blood vessels, thereby reducing the heart’s oxygen demand during periods of stress or exertion.

Isosorbide dinitrate is metabolized to nitric oxide, which activates guanylate cyclase in vascular smooth muscle. This raises cyclic GMP levels, causing relaxation of veins and arteries, lowering preload and afterload, and ultimately decreasing myocardial oxygen consumption, which alleviates ischemic chest pain.

The specific dose of Isorem is determined by the prescribing clinician based on the patient’s clinical condition, severity of angina, and response to therapy. Dosage adjustments are made according to individual needs and tolerability, and patients should follow the prescriber’s instructions precisely.

Safety data for isosorbide dinitrate in pregnancy and lactation are limited. The medication should only be used if the potential benefit justifies any possible risk to the fetus or infant. Healthcare providers will evaluate the risk‑benefit profile before prescribing to pregnant or nursing women.

To request Isorem, submit an enquiry on the product page at gnhindia.com, specifying the required quantity. GNH India works with hospitals, pharmacies, and procurement teams worldwide, verifies trade or institutional credentials, and then provides pricing, availability, shipping details (including any cold‑chain requirements), and necessary import documentation.

Isorem belongs to the nitrate class, which provides rapid vasodilation and is especially effective for acute angina relief. Compared with beta‑blockers or calcium‑channel blockers, nitrates act directly on vascular smooth muscle and are often used in combination therapy when monotherapy does not achieve adequate symptom control.

Isorem should be stored at room temperature, below 25 °C, in its original packaging to protect it from moisture and light. Keep the product out of reach of children and avoid exposing it to excessive heat or humidity, which could affect its stability.

Isorem is administered sublingually. The tablet is placed under the tongue and allowed to dissolve completely without swallowing. This route provides rapid absorption into the bloodstream, delivering quick relief of angina symptoms. Patients should remain seated or lying down after dosing to reduce the risk of dizziness.

Serious risks include severe hypotension, syncope, methemoglobinemia, and rare allergic reactions such as anaphylaxis. Patients experiencing sudden drops in blood pressure, fainting, or signs of an allergic response should seek immediate medical attention. Regular monitoring is essential, especially when combined with other vasodilators.

Isorem is contraindicated in patients with known hypersensitivity to isosorbide dinitrate or other nitrates, those with severe hypotension, and individuals who have recently used phosphodiesterase‑5 inhibitors (e.g., sildenafil) due to the risk of dangerous blood pressure reductions. Clinicians must assess each patient’s medical history before prescribing.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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