Aerospan

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Aerospan

Treatment option: Asthma, Bronchospasm

Medically reviewed

Marina Burgos

Last updated on 10/01/2026

This page provides general, reference-level information compiled from official medical sources. It is not a substitute for professional medical advice, diagnosis, or treatment. For decisions about your health, please consult a qualified healthcare professional.

Overview of Aerospan

Quick Facts

Property Description
Active ingredient Flunisolide hemihydrate
Form Inhalation Aerosol (MDI)
Pharmacological class Inhaled Glucocorticoid (Corticosteroid)
Common use Maintenance and prophylactic therapy
Origin Synthetic fluorinated steroid

What Type of Medicine is Aerospan (Flunisolide)?

Aerospan is the trade name for the prescription drug containing Flunisolide hemihydrate, a synthetic corticosteroid classified as an Inhaled Glucocorticoid. This active substance is a fluorinated steroid derivative, chemically engineered to exhibit potent anti-inflammatory activity when applied directly to sensitive tissues. Flunisolide functions through the suppression of inflammatory pathways. The classification confirms that the primary function of this medication is to address the underlying inflammatory cause of respiratory difficulties.

Composition and Delivery Form

The medication is supplied as an Inhalation Aerosol and is administered via the Oral Inhalation route using a Pressurized Metered-Dose Inhaler (MDI). This apparatus ensures that the Flunisolide active ingredient is delivered directly to the lungs, achieving a highly localized topical action. Aerospan is distinguished as a single-ingredient product utilizing a specialized, non-chlorofluorocarbon propellant (HFA) system. The use of the HFA propellant is a key feature, differentiating it from older Flunisolide formulations, aligning the product with modern regulatory and environmental standards.

General Purpose: Control and Maintenance Therapy

The general purpose of Aerospan is to provide maintenance treatment and prophylactic therapy by directly managing chronic airway inflammation. The drug exerts its potent anti-inflammatory activity by interacting with specific receptors in the airway cells, which helps suppress the underlying swelling and irritation associated with chronic respiratory conditions. This official designation as a controller medication means it is intended for sustained use to help prevent symptoms from occurring. It is explicitly not indicated for the relief of acute bronchospasm or sudden, severe breathing difficulties. This distinction is fundamental to understanding its role in a long-term treatment plan.

What side effects are possible with Aerospan?

Side Effects and Safety Information

Aerospan (flunisolide) is an inhaled corticosteroid used for the maintenance treatment of asthma. It is not indicated for the rapid relief of acute bronchospasm, and a separate rescue inhaler should be used for sudden asthma attacks.

Common and Localized Adverse Reactions

In clinical studies, the most common side effects reported were pharyngitis (sore throat), rhinitis (runny nose), headache, sinusitis, and increased cough. The use of this drug can also lead to localized oral Candida albicans infection (thrush) in the mouth or throat. Patients are typically advised to rinse their mouth after inhalation to help reduce this risk.

System-Organ Class Common Adverse Reactions (approximate incidence 1% to 10%)
Respiratory Pharyngitis, Rhinitis, Increased Cough, Sinusitis
Body as a Whole Headache, Allergic Reactions, Infection
Gastrointestinal Vomiting, Dyspepsia, Abdominal Pain, Nausea, Oral Moniliasis
Nervous System Migraine, Taste Perversion, Weakness

Clinically Significant Safety Considerations

Aerospan, like other inhaled corticosteroids, carries risks related to systemic absorption:

  • Adrenal Suppression: Long-term use, especially at higher-than-recommended doses, may lead to hypercorticism and adrenal suppression. Patients transferring from oral corticosteroids are at a particular risk of impaired adrenal function and may require supplemental systemic steroids during periods of stress, trauma, or surgery.
  • Immunosuppression: The drug can mask signs of infection and increase susceptibility to certain infections. Non-immune patients exposed to chickenpox or measles should seek medical attention immediately, as these conditions can have a more severe course.
  • Ocular and Bone Effects: Long-term corticosteroid use is associated with a potential reduction in bone mineral density, and the development of glaucoma or cataracts; close eye monitoring is warranted.
  • Pediatric Growth: The growth velocity of pediatric patients should be monitored regularly, as growth suppression has been reported with inhaled corticosteroid use.
  • Paradoxical Bronchospasm can occur immediately after dosing. This should be treated with a fast-acting inhaled bronchodilator.

Overdose and Emergency Response

Overdose and When to Seek Help

The official regulatory profile for Aerospan (Flunisolide) overdose focuses on the risks associated with systemic corticosteroid exposure, typically from chronic use of doses higher than recommended. The administration of excessive doses may result in the suppression of the body’s Hypothalamic-Pituitary-Adrenal (HPA) axis function.

The documented clinical manifestations of overdose include hypercorticism and adrenal suppression. These conditions indicate a systemic glucocorticoid excess that can lead to impaired adrenal function. The safety and efficacy of administering doses that exceed recommended amounts have not been established by regulatory authorities.


Mandated Emergency Response

In the event of any suspected overdose, official government guidance mandates seeking medical care right away. It is required to immediately contact a poison control center to receive professional instructions.

If the systemic manifestations of hypercorticism or adrenal suppression are confirmed, the officially described management measure is the slow and gradual discontinuation of Aerospan. While no specific antidote is listed in regulatory labeling, management remains supportive. A population-specific consideration for children is the need to monitor for potential effects on growth related to systemic exposure.

Therapeutic Uses of Aerospan

Quick Facts

  • Main Use: Prophylactic maintenance therapy for asthma.
  • Patient Population: Adults and pediatric patients 6 years of age and older.
  • Potential Benefit: May help reduce the need for oral corticosteroid therapy in some asthma patients.

Aerospan (flunisolide) is indicated for the maintenance treatment of asthma as prophylactic therapy. This medication is used to help control symptoms associated with persistent asthma in adult and pediatric patients aged 6 years and older. It may help manage common respiratory symptoms, including difficulty breathing, wheezing, and coughing, by addressing factors that contribute to irritation in the airways.

For patients who currently require oral corticosteroid use, adding Aerospan may offer a potential path to reduce or eliminate the need for those systemic treatments. However, it is important to understand that this medication is not intended for the relief of an acute asthma event. Therapeutic use and specific benefits should be discussed with a qualified healthcare professional. Improvement in asthma control may become noticeable after a few weeks of consistent use.

Eligibility and Restrictions for Use

Aerospan (Flunisolide) is formally authorized for maintenance treatment of asthma in adult patients and pediatric patients 6 years of age and older. The regulatory profile strictly defines who can and cannot use the medicine, establishing absolute prohibitions and various conditional restrictions.

The medication is contraindicated in patients experiencing acute episodes of asthma or acute bronchospasm and must not be used for the primary treatment of status asthmaticus. Use is also prohibited for patients with known hypersensitivity to flunisolide or any ingredient.

Restriction Category Status / Rule
Minimum Age Use is not established for children under 6 years of age.
Infections Use with caution, if at all, in patients with untreated systemic infections (e.g., tuberculosis, ocular herpes simplex).
Special Populations Pregnancy: Use only if the potential benefit outweighs the risk. Lactation: Use caution; human data is insufficient.
Conditional Use Caution is advised for patients with a history of glaucoma or cataracts, and for those at risk for decreased bone mineral density.

These eligibility rules define Aerospan as a chronic controller medicine, limiting its use to established age groups and requiring careful consideration for individuals with specific comorbidities or physiological states.

What should I know about interactions with other medicines?

Interactions with other medicines and products

Aerospan (flunisolide HFA) is an inhaled corticosteroid. Clinically significant interactions are primarily related to the potential for systemic corticosteroid effects and immunosuppression when combined with specific medicinal products or product classes.

Documented Interaction Categories

Category Practical Implication Regulatory Classification
Other Corticosteroids Increased risk of hypercorticism and/or adrenal suppression. Use with caution/Monitor
Immunosuppressants/Vaccines Increased risk of infection; may reduce vaccine efficacy (live vaccines). Use with caution/Avoid certain combinations
Specific Agents Requires monitoring or avoidance due to increased risk of adverse effects. Varies by Agent

Interaction-Related Constraints

Concomitant use with other systemic or inhaled corticosteroid products must be monitored closely to prevent signs of systemic effects. The use of live vaccines while taking Aerospan may be associated with a greater chance of developing an infection or may decrease the protective effect of the vaccine, requiring a careful clinical assessment of timing and need.

Regulatory documents explicitly list Desmopressin as a medicine that should be avoided in combination with flunisolide due to a highly clinically significant interaction. Other medicines, including certain anticoagulants/antithrombotics and antidepressants, are noted to potentially require close observation.

Mechanism of Action

How Aerospan Works

Aerospan’s active ingredient, flunisolide, is an inhaled corticosteroid that exerts its effects locally within the airways. Its primary action is as an agonist for the intracellular Glucocorticoid Receptor ( GR), which is found in the cells of the bronchial tissue, including immune and epithelial cells. Upon binding, the activated drug-receptor complex translocates into the cell's nucleus.

Within the nucleus, the complex acts primarily through transrepression, a mechanism that directly blocks the activity of pro-inflammatory transcription factors, such as Nuclear Factor kappa B ( NF-kappa B). This molecular interference modifies the downstream signaling cascade, reducing the transcription and subsequent release of numerous inflammatory mediators (including cytokines and chemokines).

This reduction in mediator production suppresses the recruitment and activity of inflammatory cells (like eosinophils and mast cells) in the airway lining. The consequent decrease in cellular activity lowers local capillary permeability and reduces cell-mediated fluid leakage, resulting in a reduction of tissue fluid accumulation in the bronchial passages.

Dosage and Administration Information

Administration Scope

Feature Instructional Details
Route of administration Oral Inhalation only.
Dosing schedule Adults/Adolescents (12+): Starting dose is 160 mcg (2 actuations) twice daily, with a maximum daily dose of 640 mcg (4 actuations twice daily).
Timing in relation to meals Instructions for administration are independent of meals.
Preparation requirements Requires priming with two test sprays before initial use or after two weeks of non-use.
Age-group administration rules Pediatric (6 to 11 years): The dose is 80 mcg (1 actuation) twice daily. Administration must occur under adult supervision.
Missed-dose rules If a dose is missed, continue with the next scheduled dose; the dose must not be doubled.
Special procedural conditions The product includes a built-in spacer and must not be used with any external spacer. Patients must rinse their mouth with water and spit it out after each use.

Instruction Classifications (High-Level)

Classification Description
Administration method type Inhaled (via Metered-Dose Inhaler).
Frequency pattern Twice Daily (BID) for sustained maintenance use.
Use-context constraints The medication is explicitly not indicated for the relief of an acute bronchospasm.

Resulting Procedural Structure

Step sequence:

  • Priming: The device must be prepared prior to initial or renewed use.
  • Inhalation: The prescribed dose is administered via deep, slow inhalation through the mouth.
  • Rinsing: After the final actuation of the day, the mouth must be rinsed with water and the water expelled (not swallowed).

Connection to the overall use protocol: The instructions dictate a precise, twice-daily schedule using a specific oral inhalation technique to ensure the medication is delivered locally to the lungs. These rules govern the required device usage, the age-specific dosages, and necessary post-administration steps like rinsing. The entire procedural structure is designed to standardize the long-term, prophylactic use of the medication.

Recent Clinical Evidence

Aerospan: Recent Clinical Evidence

Clinical research regarding flunisolide (the active ingredient in Aerospan) focuses on its role as a maintenance treatment for asthma. As an inhaled corticosteroid, flunisolide is studied for its ability to reduce inflammation in the airways, which is a core feature of chronic asthma. Evidence indicates that regular use may contribute to the prevention of asthma symptoms.

Efficacy Findings

Clinical trials involving adults and pediatric patients have investigated the effects of flunisolide on several measures of pulmonary function. Studies show that treatment with flunisolide is associated with improvements in key lung function metrics, such as forced expiratory volume in one second (FEV1). A dose-response relationship has been observed in some studies, suggesting that the clinical effect is tied to the prescribed dosage.

Role in Management

Flunisolide is generally studied in populations with persistent asthma who require a daily controller medication. Research suggests that for patients in this category, consistent use of an inhaled corticosteroid may reduce the frequency and severity of asthma exacerbations, potentially lowering the need for systemic corticosteroids or rescue inhalers. The therapeutic effect is not immediate and generally requires continuous use, as reflected in the study designs.

Tolerability Profile

In studies, the overall tolerability profile of flunisolide has been characterized. The incidence of local adverse effects, such as oral candidiasis (thrush) and dysphonia (hoarseness), was observed in some populations. The risk of these effects is often associated with the method of administration. Research regarding systemic effects remains an ongoing area of investigation, with attention paid to potential impacts on bone density and the hypothalamic-pituitary-adrenal (HPA) axis.

Key Studies & References Comparative Efficacy of Flunisolide vs. Other Inhaled Corticosteroids in Asthma Maintenance: A Randomized Controlled Trial

Frequently Asked Questions (FAQ)

Common questions about Aerospan (FAQ)


Q: How long does it usually take to notice Aerospan working?

Aerospan is intended for long-term maintenance treatment, not for immediate relief of sudden breathing problems. According to official product information, for the maximum therapeutic effect to be achieved, continuous use for two to four weeks may be required.


Q: Does Aerospan start working right away?

Official regulatory documents confirm that Aerospan is explicitly not indicated for the relief of an acute bronchospasm. This means it is not intended for use when quick relief is needed for sudden or severe breathing difficulties.


Q: How does Aerospan compare to other common inhalers?

Aerospan is classified as an Inhaled Glucocorticoid, which is a type of controller medicine used daily to manage chronic inflammation. This descriptive classification separates it from other inhalers, such as those that provide immediate, short-acting relief (rescue inhalers).


Q: What is the difference between Aerospan and a rescue inhaler?

A rescue inhaler is a separate medication whose function is limited to the immediate relief of acute asthma attacks or bronchospasm, which Aerospan is not indicated to treat. Aerospan is used as a controller medication for daily maintenance to prevent symptoms from occurring.


Q: What is the age limit for using Aerospan?

Official regulatory documents state that the medicine is formally authorized for use in adults and pediatric patients 6 years of age and older. Use is not established for children younger than six years of age.


Q: Can Aerospan be used by pregnant or breastfeeding individuals?

Regarding pregnancy, official information advises that the medication should be used only when the potential benefit is determined to outweigh the potential risk to the fetus. For breastfeeding individuals, caution is recommended, as it is unknown if the drug is excreted into human milk.


Q: Does Aerospan affect blood pressure?

While the drug's label does not list blood pressure changes as a common side effect, symptoms of adrenal insufficiency—a potential risk associated with long-term systemic corticosteroid effects—can include low blood pressure (hypotension).


Q: What is the typical timeframe for seeing the maximum benefit from Aerospan?

The timeframe for achieving the maximum therapeutic effect is often noted in official documents. Continuous daily therapy for generally two to four weeks may be required for the maximum effect to be achieved.


Q: Are headaches a common side effect of Aerospan?

Yes, headache is listed in regulatory documents as a common adverse reaction reported during clinical studies. In these studies, common reactions typically occurred in approximately 1% to 10% of individuals.


Q: What happens if I stop using Aerospan suddenly?

Official regulatory warnings exist against the abrupt discontinuation of the medication. This caution is due to the potential risk of adrenal insufficiency and possible withdrawal symptoms for individuals, particularly those who have been transferred from long-term systemic (oral) corticosteroid therapy.


Q: Can Aerospan cause anxiety or mood changes?

Official information indicates that depression and irritability are noted as potential symptoms of withdrawal. These symptoms may be experienced by patients who are transferred from long-term oral corticosteroid therapy.


Q: Does using Aerospan affect your bones or increase osteoporosis risk?

Regulatory documents indicate that long-term use of inhaled corticosteroids, like Aerospan, is associated with a potential reduction in bone mineral density. Because of this association, the monitoring of bone mineral density may be warranted during long-term use.


Q: Is it normal to feel a different taste in my mouth after using Aerospan?

Yes, a different taste in the mouth is listed as a documented adverse reaction known as taste perversion. This information is included in the safety and side effect sections of regulatory documents.


Q: What evidence supports the use of Aerospan for its approved conditions?

The medicine's use for maintenance asthma treatment is supported by clinical trials which have shown that treatment is associated with improvements in key lung function metrics, such as forced expiratory volume in one second (FEV1), in patients with persistent asthma.


Q: Are there specific criteria for who should not use Aerospan?

Official product information lists absolute prohibitions, known as contraindications. These include not using the drug if a patient has acute episodes of asthma, status asthmaticus, or known hypersensitivity to any component. Conditional use requires caution for individuals with certain comorbidities.


Q: Why do official documents caution against stopping Aerospan abruptly?

The caution against abrupt discontinuation is due to the potential risk of adrenal insufficiency in some individuals. This is particularly relevant for patients who have been switched from systemic (oral) corticosteroids, as stopping suddenly could lead to withdrawal symptoms.


Q: Does Aerospan interact with other common asthma or COPD medications?

Regulatory documents warn against combining Aerospan with other systemic or inhaled corticosteroid products due to the risk of systemic effects. A warning also exists regarding combination with an additional medicine containing a LABA (Long-Acting Beta Agonist) due to potential overdose risks.


Q: What does Aerospan do to the airways?

Aerospan contains an inhaled corticosteroid that works directly in the airways to reduce inflammation. This potent anti-inflammatory action helps to suppress the underlying swelling and irritation associated with chronic respiratory conditions.


Q: Is Aerospan considered a maintenance drug?

Yes, the official general purpose of the drug is to provide maintenance treatment and prophylactic therapy by directly managing chronic airway inflammation. It is officially designated as a controller medication.


Q: Why is proper inhalation technique important for Aerospan?

Proper technique ensures that the medication is delivered locally to the lungs for the maximum effect. It is also linked to reducing local adverse effects, such as oral fungal infections, which may be mitigated by following post-use instructions like rinsing the mouth.

How should Aerospan be stored and disposed of?

How to Store and Dispose of Aerospan

Aerospan (flunisolide HFA) Inhalation Aerosol must be stored and handled according to specific conditions defined by regulatory labeling.

Storage Requirements

Condition Requirement
Temperature Store at controlled room temperature, 20 C to 25 C (68 F to 77 F).
Protection Protect the canister from freezing, direct light, and excessive heat (temperatures above 49 C / 120 F).
Packaging Keep the canister in the moisture-protective foil pouch until first use.
Safety Store the medication out of the reach of children.

Disposal Instructions

Due to the pressurized nature of the container, specific disposal rules apply:

  • The inhaler must be discarded after the maximum labeled number of actuations (e.g., 60 or 120 sprays) has been used.
  • Do not puncture, incinerate, or throw the canister into a fire, even if it appears empty.
  • Consult a pharmacist or local waste disposal service for guidance on discarding unused or expired product according to local regulations.

Attention! Always consult to a doctor or pharmacist before using pills or medicines.

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