Product image of Isomex Xl (Isosorbide Mononitrate) supplied by GNH India

Isomex Xl

Active Ingredient:
Isosorbide Mononitrate
Origin:
EU

Isomex Xl (Isosorbide Mononitrate)

Isosorbide Mononitrate, the active ingredient in Isomex Xl, is a nitrate vasodilator presented as an oral dosage form for oral use. It is employed to prevent angina pectoris and to manage chronic stable angina in adult patients.

GNH India supplies Isomex Xl as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals, pharmacies and clinics worldwide.

Manufacturer / TM Owner

Rph Pharmaceuticals Ab

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Indications & Clinical Uses

Isosorbide Mononitrate is used within the anti‑anginal and vasodilator therapeutic area to improve myocardial oxygen balance.

  • Prevention of angina pectoris: reduces the frequency of angina attacks during daily activities.
  • Chronic stable angina: enhances exercise tolerance and delays onset of chest pain.
  • Angina pectoris (stable): provides symptomatic relief by decreasing cardiac workload.

How It Works

  • Isosorbide Mononitrate is a prodrug that is metabolized to release nitric oxide. The nitric oxide activates guanylate cyclase, increasing cyclic GMP levels in vascular smooth muscle, which leads to relaxation of arteries and veins. This vasodilation lowers both preload and afterload, improving myocardial oxygen supply and reducing the occurrence of angina.

Side Effects

Adverse reactions may occur with Isosorbide Mononitrate therapy.

Common Side Effects

  • Headache
  • Dizziness
  • Flushing
  • Hypotension
  • Nausea
  • Palpitations

Serious or Rare Side Effects

  • Severe hypotension leading to syncope
  • Acute myocardial infarction (rare)
  • Life‑threatening arrhythmias
  • Anaphylactic reaction
  • Methemoglobinemia
  • Severe skin rash or Stevens‑Johnson syndrome

Precautions & Warnings

Before initiating therapy, clinicians should consider several safety measures.

  • Assess cardiovascular status: evaluate blood pressure and heart rate prior to treatment.
  • Avoid use with phosphodiesterase‑5 inhibitors: risk of profound hypotension.
  • Monitor for tolerance development: efficacy may diminish over time.
  • Adjust dose in renal impairment: consider renal function when dosing.
  • Discontinue before surgery: stop 24–48 hours prior to elective procedures.
  • Store at ambient temperature: keep in original container, protect from moisture and light.

Avoid Interactions

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

Major Interactions (Avoid)

  • Other nitrates (e.g., nitroglycerin): additive vasodilation may cause severe hypotension.
  • Phosphodiesterase‑5 inhibitors (sildenafil, tadalafil): risk of profound blood pressure drop.
  • Potent antihypertensives (e.g., intravenous nitroprusside): may lead to uncontrolled hypotension.

Moderate Interactions (Monitor Closely)

  • Diuretics: may enhance blood pressure‑lowering effect.
  • Beta‑blockers: combined effect on heart rate and blood pressure requires observation.
  • Alcohol: can increase vasodilatory response and dizziness.

Frequently Asked Questions

Isomex Xl contains isosorbide mononitrate, which is prescribed to prevent angina pectoris and to treat chronic stable angina. By reducing the heart’s workload, it helps patients experience fewer chest pain episodes during daily activities.

Isosorbide mononitrate is a prodrug that releases nitric oxide after oral absorption. Nitric oxide stimulates guanylate cyclase, raising cyclic GMP in vascular smooth muscle, causing arterial and venous dilation. This lowers preload and afterload, improving oxygen delivery to the heart.

The specific dose of Isomex Xl is determined by the prescribing clinician based on the patient’s condition, response, and tolerability. Dosage adjustments may be needed for renal function or concomitant medications, and the prescriber will provide individualized instructions.

Safety data for isosorbide mononitrate in pregnancy and lactation are limited. It should only be used if the potential benefit justifies any potential risk to the fetus or infant, and the decision must be made by a qualified healthcare professional.

To order Isomex Xl, 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 and any necessary import documentation.

Isomex Xl belongs to the nitrate class, offering long‑acting vasodilation. Compared with short‑acting nitrates, it provides more stable plasma levels and fewer dosing fluctuations. Unlike beta‑blockers, it primarily reduces preload rather than heart rate, making it a complementary option in many treatment regimens.

Isomex Xl should be stored at ambient temperature, below 25 °C, in its original packaging. Keep the product away from moisture and direct sunlight to maintain stability throughout its shelf life.

Isomex Xl is taken orally, usually with a glass of water. The tablet should be swallowed whole and not crushed or chewed, unless otherwise directed by a healthcare professional.

Serious risks include severe hypotension, syncope, life‑threatening arrhythmias, and rare allergic reactions such as anaphylaxis. Patients should seek immediate medical attention if they experience fainting, chest pain, or signs of a severe allergic response.

Isomex Xl is contraindicated in patients with known hypersensitivity to isosorbide mononitrate or any nitrate, those who have taken phosphodiesterase‑5 inhibitors within the past 24‑48 hours, and individuals with severe hypotension or uncompensated heart failure unless directed by a physician.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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