Inomax

Nitric Oxide, the active ingredient in Inomax, is an inhaled nitric oxide donor presented as a medical gas for endotracheopulmonary (inhalation) use. It treats neonatal pulmonary hypertension, persistent pulmonary hypertension of the newborn, and acute respiratory distress syndrome.

GNH USA supplies Inomax as a licensed, GDP‑compliant international pharmaceutical supplier serving hospitals worldwide.

Inomax, an inhaled nitric oxide donor, is used to manage conditions characterized by elevated pulmonary vascular resistance.

- Neonatal pulmonary hypertension: improves oxygenation by reducing pulmonary artery pressure. - Persistent pulmonary hypertension of the newborn: facilitates transition to normal pulmonary circulation. - Acute respiratory distress syndrome: provides selective pulmonary vasodilation to support gas exchange.

Inomax may cause a range of adverse reactions that require monitoring.

Common Side Effects: - Methemoglobinemia: elevated methemoglobin levels reducing oxygen delivery. - Nitrogen dioxide formation: irritant gas generated from nitric oxide oxidation. - Transient systemic hypotension: mild drop in blood pressure. - Rebound pulmonary hypertension: increase in pulmonary pressure after abrupt discontinuation.

Serious or Rare Side Effects: - Severe methemoglobinemia: can lead to cyanosis and hypoxia. - Profound hypotension: may require vasopressor support. - Nitrogen dioxide‑induced lung injury: inflammatory damage to alveolar tissue. - Bleeding tendencies: due to platelet inhibition. - Acute respiratory decompensation: sudden worsening of gas exchange.

When using Inomax, clinicians should observe specific safety measures.

- Methemoglobin monitoring: regularly assess levels to detect toxicity. - NO2 surveillance: keep nitrogen dioxide concentrations within safe limits. - Dose titration: adjust inhaled concentration based on oxygenation response. - Avoid abrupt cessation: taper the gas to prevent rebound hypertension. - Compatible delivery system: use equipment designed for nitric oxide administration. - Store at ambient temperature: keep cylinder in original packaging, protect from heat and direct sunlight.

Inomax can interact with other agents affecting pulmonary vascular tone or nitric oxide pathways.

Major Interactions (Avoid): - Other inhaled vasodilators (e.g., prostacyclin analogues): risk of additive hypotension. - Methylene blue: may antagonize nitric oxide effects.

Moderate Interactions (Monitor Closely): - High inspired oxygen concentrations: increase nitrogen dioxide formation. - Systemic vasodilators (e.g., sildenafil): monitor for excessive blood pressure reduction. - Blood transfusions: may alter methemoglobin monitoring accuracy.