Product image of Inomax (Nitric Oxide) supplied by GNH India

Inomax

Active Ingredient:
Nitric Oxide
Origin:
EU

Inomax (Nitric Oxide)

Nitric Oxide, the active ingredient in Inomax, is a Vasodilator presented as a medical gas for endotracheopulmonary use. It is employed to manage pulmonary hypertension and neonatal persistent pulmonary hypertension by providing selective pulmonary vasodilation.
GNH India supplies Inomax as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals worldwide.

Manufacturer / TM Owner

Linde Healthcare Ab

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Indications & Clinical Uses

Inomax is a pulmonary vasodilator used in conditions affecting the pulmonary circulation.

  • Pulmonary hypertension: lowers pulmonary arterial pressure and improves oxygenation.
  • Neonatal persistent pulmonary hypertension: provides selective pulmonary vasodilation to enhance oxygen exchange in newborns.

How It Works

  • Inhaled nitric oxide diffuses into the pulmonary vasculature where it activates soluble guanylate cyclase, increasing cyclic GMP levels. Elevated cGMP leads to smooth‑muscle relaxation in pulmonary arteries, producing selective vasodilation without systemic effects and thereby improving ventilation‑perfusion matching.

Side Effects

Adverse reactions may occur with inhaled nitric oxide therapy.

Common Side Effects

  • Methemoglobinemia: elevation of methemoglobin levels causing reduced oxygen delivery.
  • Nitrogen dioxide formation: irritant gas that can damage airway mucosa.
  • Transient systemic hypotension: mild drop in systemic blood pressure.

Serious or Rare Side Effects

  • Severe methemoglobinemia: may require methylene blue treatment.
  • Rebound pulmonary hypertension: sudden rise in pulmonary pressure after abrupt discontinuation.
  • Significant nitrogen dioxide‑induced lung injury: can lead to respiratory distress.

Precautions & Warnings

Proper use of Inomax requires careful monitoring and specific safety measures.

  • Dose titration: adjust based on pulmonary artery pressure and oxygenation response.
  • Monitoring: continuous pulse‑oximetry and regular methemoglobin level checks are essential.
  • Anemia caution: avoid or use with caution in severe anemia due to increased methemoglobin risk.
  • Concomitant vasodilators: monitor for additive hypotensive effects.
  • Store at ambient temperature: keep cylinder in original packaging, protect from heat and direct sunlight.

Avoid Interactions

Inomax can interact with several drug classes, necessitating vigilance.

Major Interactions (Avoid)

  • Phosphodiesterase‑5 inhibitors (e.g., sildenafil): additive pulmonary vasodilation may cause severe hypotension.
  • Other nitric oxide donors: combined use increases risk of methemoglobinemia.

Moderate Interactions (Monitor Closely)

  • Inhaled anesthetics (e.g., nitrous oxide): may potentiate vasodilatory effect.
  • Systemic vasodilators (e.g., nitroglycerin): monitor blood pressure for additive drops.
  • Bronchodilators: observe for changes in airway reactivity.

Frequently Asked Questions

Inomax is used to treat pulmonary hypertension in adults and persistent pulmonary hypertension of the newborn. In both cases, the inhaled nitric oxide provides selective dilation of the pulmonary vessels, helping to lower arterial pressure and improve oxygenation.

Nitric oxide delivered by Inomax diffuses into the lung vasculature and activates soluble guanylate cyclase. This raises cyclic GMP levels, which relaxes smooth‑muscle cells in the pulmonary arteries, producing targeted vasodilation without significant systemic effects.

The dose of Inomax is determined by the prescribing clinician based on the patient’s condition, response, and monitoring results. Dosage is individualized and adjusted according to pulmonary artery pressure, oxygenation, and safety parameters.

Safety data for Inomax in pregnancy and lactation are limited. The product should only be used if the potential benefit justifies any potential risk to the fetus or infant, and the decision must be made by the treating physician.

To order Inomax, 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 import documentation.

Inomax delivers nitric oxide directly to the lungs, offering rapid and selective pulmonary vasodilation, whereas systemic agents such as phosphodiesterase‑5 inhibitors affect the whole circulatory system. This selectivity reduces systemic hypotension but requires specialized delivery equipment and monitoring.

Inomax cylinders should be stored at ambient temperature, kept in their original packaging, and protected from heat and direct sunlight. Ensure the cylinder is secured upright and that any leak‑detection equipment is functional before use.

Inomax is administered via a calibrated delivery system that introduces the gas into the endotracheopulmonary circuit. The clinician sets the flow rate according to the prescribed dose, and continuous monitoring of oxygenation and methemoglobin levels is performed throughout therapy.

The most serious risks include severe methemoglobinemia, rebound pulmonary hypertension after abrupt discontinuation, and nitrogen dioxide‑induced lung injury. Prompt recognition and appropriate management, such as gradual weaning and methemoglobin monitoring, are essential to mitigate these risks.

Inomax should be avoided in patients with known hypersensitivity to nitric oxide, severe anemia, or those who cannot be adequately monitored for methemoglobin levels and pulmonary pressures. Contraindications are determined by the treating physician based on individual clinical assessment.

Published by

GNH India Pharmaceuticals Limited

Licensed pharmaceutical supplier

Last updated:

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