Deflan

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Deflan

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Medically reviewed

Laura Arias

Last updated on 22/12/2025

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 Deflan

Property Description
Active ingredient Deflazacort
Form Oral tablet, Oral suspension
Pharmacological class Corticosteroid (Glucocorticoid)
General purpose Managing inflammation and immune response
Origin Synthetic (Prodrug)

What is Deflazacort and What Type of Drug is it?

Deflazacort is the non-proprietary name for the active ingredient in medications like Deflan, which is classified as a potent synthetic corticosteroid, specifically belonging to the glucocorticoid pharmacological class. This substance is an oxazoline derivative of prednisolone and is administered as an inactive prodrug. It requires immediate conversion by esterases in the body to its primary active metabolite, 21-desacetyldeflazacort, which is responsible for the drug’s therapeutic effects. This conversion process is a distinctive feature of Deflazacort’s pharmacodynamics. As a single active ingredient product, Deflazacort is supplied for oral use in two key dosage forms: a solid tablet and an oral suspension (liquid). The availability of the oral suspension is particularly important as it facilitates precise administration for pediatric patient groups, a key differentiating factor.

What is the General Purpose of Deflan?

The general therapeutic purpose of Deflan is to manage conditions characterized by chronic, excessive inflammation and heightened immune system activity. The active metabolite works as an agonist binding to glucocorticoid receptors, which modulates the immune response. This confirms the drug's essential role is to adjust the body’s inflammatory and defense reactions. This action provides powerful immunosuppressive and significant anti-inflammatory activity. Clinically recognized for its role in systemic therapy, Deflazacort's profile supports its use as a systemic corticosteroid for its anti-inflammatory effects. This means the medicine is used for its ability to reduce swelling and control the immune system internally. By intervening in these systemic processes, Deflazacort is typically used to help stabilize the patient's condition and control chronic damage that arises from the underlying inflammatory and autoimmune pathology.

What side effects are possible with Deflan?

Possible Side Effects and Safety Information

Deflazacort, as a systemic glucocorticoid, has a defined safety profile reflecting its potent effects on the endocrine and immune systems, as documented in official regulatory labeling.


Documented Adverse Reactions by Frequency

Adverse reactions are classified according to frequency based on clinical data. Very Common (ge 10% of patients) effects typically include a Cushingoid appearance (e.g., facial puffiness), increased weight, and increased appetite. Additionally, the very common category includes upper respiratory tract infection, cough, and pollakiuria (frequent urination).

Common (1% to 10% of patients) adverse reactions noted in official labeling include irritability, nasopharyngitis (common cold), hirsutism, and central obesity. Ophthalmic effects, such as cataract formation, are also classified within this frequency range.


Serious Safety Risks and Systemic Alterations

Regulatory warnings highlight potential serious adverse reactions associated with Deflazacort use. These include serious alterations in Endocrine Function, such as the potential for HPA axis suppression and adrenal insufficiency following abrupt discontinuation of treatment, and the risk of hyperglycemia.

Due to its effects on the immune system, the drug increases the risk of new, exacerbated, or latent infections, which can be severe. Other serious documented risks span several system-organ classes, including gastrointestinal perforation and peptic ulceration, severe behavioral and mood disturbances (e.g., psychosis), and musculoskeletal risks like osteoporosis and fractures. Safety notes confirm that long-term use may cause slowed growth and development in children.

Overdose and Emergency Response

Deflan Overdose and When to Seek Help

The official overdose profile for Deflan (Deflazacort) primarily addresses the necessary response to a potential ingestion of a toxic amount, rather than listing a specific set of acute symptoms.

Overdose Scope Official Regulatory Statement
Documented Overdose Presentations No specific acute toxic symptom cluster is uniformly documented; risks are associated with complications from prolonged high-dose use (Cushingoid features) or abrupt cessation.
Dose/Exposure Factors Adverse effects like clinical features resembling Cushing’s syndrome are noted to be associated with chronic/prolonged use or high doses.
Emergency Response Statement In case of overdose, call the poison control helpline or seek emergency medical treatment at once.
Management Measures Treatment for an overdose is described as supportive and symptomatic.

When Immediate Medical Help Is Required

The regulatory information mandates that an individual seek emergency medical attention immediately following any suspected overdose. This directive applies even if the affected person shows no immediate signs of discomfort or illness. If the victim has collapsed, is experiencing trouble breathing, or has had a seizure, emergency services should be contacted without delay. There is no specified antidote for this medication; therefore, emergency intervention focuses on supportive care and symptom management.

The information above is strictly derived from official government-authorized drug labeling documents.

Therapeutic Uses of Deflan

What Deflan Treats: Main Uses and Benefits

Quick Facts

  • Primary Indication: Treatment for Duchenne muscular dystrophy (DMD).
  • Therapeutic Goal: May support the maintenance of muscle strength and function.

Deflan (Deflazacort) is indicated for the treatment of Duchenne muscular dystrophy (DMD) in patients aged 2 years and older. DMD is a progressive disease associated with muscle weakness and deterioration.

The use of Deflan is intended to manage the effects of this condition. Deflan may help support muscle strength and functional ability in patients with DMD. Continued use may also be associated with support for cardiac and respiratory function over time, which may help to maintain overall well-being.

As a therapeutic option, Deflan is used to address the disease process. For more information regarding approved uses, please consult the prescribing information.

Eligibility and Restrictions for Use

Who Can and Cannot Use Deflan? — Official Regulatory Information

Deflan (deflazacort) is indicated for patients 2 years of age and older. Its use is contraindicated and must be avoided in populations with a known hypersensitivity to the drug or any of its inactive ingredients, as well as those with systemic fungal infections.

Age and Specific Populations: The medicine is not recommended for use in children younger than 2 years of age, as safety and effectiveness have not been established in this group. For geriatric patients, official regulatory documents indicate that specific data on the relationship of age to the drug's effects are generally unavailable.

Organ Function and Comorbidities: Eligibility is restricted for patients with certain pre-existing conditions. While use in patients with mild, moderate, or severe renal impairment is permitted, there are no established dosage recommendations for patients with severe hepatic impairment. Use requires caution in patients with a history of congestive heart failure, hypertension, peptic ulcers, diabetes mellitus, or active/latent infections like tuberculosis, as these conditions necessitate special monitoring.

Reproductive Status: Use during pregnancy is permitted only if the potential benefit is determined to justify the potential risk to the fetus. The medicine is not recommended for use while breastfeeding.

What should I know about interactions with other medicines?

Deflazacort, the active ingredient in Deflan, is a prodrug that is rapidly converted to its active metabolite, 21-desacetyl deflazacort (21-desDFZ). The potential for interactions is significant and primarily involves metabolism and pharmacodynamic effects.

Metabolite-based Interactions

Category Interaction Note & Action Regulatory Classification
CYP3A4 Inhibitors (Moderate or Strong) These medicines increase the concentration of the active metabolite (21-desDFZ). A dose reduction of Deflan to one-third of the recommended amount is necessary. Major: Dose Adjustment Required
CYP3A4 Inducers (Moderate or Strong) These medicines (e.g., apalutamide, St. John's wort) decrease the concentration of the active metabolite, which may result in loss of therapeutic effect. Avoid concomitant use of these medicines. Major: Avoid Combination

Pharmacodynamic Interactions

Product Class / Vaccine Interaction Note & Action Regulatory Classification
Live or Live-Attenuated Vaccines Deflan, due to its immunosuppressive effects, can lead to disseminated infection and may reduce the vaccine's efficacy. Do not administer these vaccines during Deflan therapy; vaccinate at least 4 to 6 weeks prior. Contraindicated
Antidiabetic Agents Deflan may increase blood glucose levels, potentially requiring an adjustment in the dose of the antidiabetic medicine. Use with Caution
Anticoagulants Altered anticoagulant effects have been reported; monitor coagulation parameters closely when co-administering. Use with Caution
NSAIDs / Salicylates Concomitant use increases the risk of serious gastrointestinal ulceration and bleeding. Use with Caution

Mechanism of Action

Mechanism of Action: How Deflan Works

GR Agonism and Prodrug Activation

Deflan is a prodrug that undergoes metabolism to its active form, 21-desacetyl-deflazacort, which functions as a Glucocorticoid Receptor (GR) Agonist. This activation is the core step that initiates all subsequent gene-modulating effects, resulting in systemic immunosuppression.


Transcriptional Modulation and Cascade Suppression

The activated GR complex translocates to the cell nucleus, where it executes a dual action: Transrepression (blocking pro-inflammatory genes like those controlled by NF-κB) and Transactivation (promoting anti-inflammatory protein synthesis). The net result is the modulation (dampening) of the inflammatory cascade at the genetic level, which is a key pathway effect.


Systemic Immunometabolic Adjustments

The drug's mechanism leads to modulation of the immune system (reducing immune cell function and migration) and influences metabolic pathways. These systemic effects contribute to the mechanism's physiological consequences, including the predictable, non-indicational effects like HPA axis suppression and alterations in glucose homeostasis.

Dosage and Administration Information

How to Use Deflan: Official Administration Guidelines

Deflazacort (Deflan) is administered solely by the oral route, available as both tablets (6 mg, 18 mg, 30 mg, and 36 mg) and an oral suspension (22.75 mg/mL). The medicine is taken once daily and may be administered with or without food.


Dosing and Preparation

Deflan is indicated for use in patients 2 years of age and older, with the standard dosage based on body weight, calculated at approximately 0.9 mg/kg/day. When calculating the dose:

  • Tablets are rounded up to the nearest dose achievable by combining the available tablet strengths.
  • The oral suspension dose is rounded up to the nearest tenth of a milliliter (mL).

For administration, tablets may be swallowed whole or crushed and mixed with applesauce; both tablets and the oral suspension must be taken immediately after preparation. The oral suspension must be shaken well and mixed with 3 to 4 ounces of juice or milk, but specifically not grapefruit juice.


Procedural Constraints

Certain procedural constraints govern the use of Deflan. If the medicine is co-administered with moderate or strong CYP3A4 inhibitors, the recommended dose of Deflazacort must be reduced to one-third of the standard amount. Conversely, use with CYP3A4 inducers must be avoided. If the medicine has been taken for more than a few days, gradual tapering of the dose is required upon discontinuation; the drug should not be stopped abruptly.

Recent Clinical Evidence

Research Evidence / Overview of Studies for Deflan

This section provides an overview of the scientific research that has been conducted to study Deflan (deflazacort), focusing on what researchers explored, what findings were described, and what aspects of the evidence remain uncertain. This information is intended to provide context but not individual predictions or clinical recommendations.

Evidence for Use in Duchenne Muscular Dystrophy (DMD)

Research into Deflan was studied for use in Duchenne muscular dystrophy is based on two main study types: Randomized Controlled Trials (RCTs) and long-term observational studies. RCTs are short-term studies designed to compare the drug against an inactive substance (placebo) or an active comparator, such as another corticosteroid.

These trials primarily were studied to characterize outcomes reflecting daily functioning or activity level. Researchers examined outcomes such as standardized muscle strength scores and tracked functional ability through timed function tests (TFTs), including the time required to walk a short distance (e.g., 10 meters) or climb stairs. Initial studies documented measured changes in strength over periods of around 12 weeks, with data showing patterns related to Deflan-treated groups versus placebo groups.

Long-Term Evidence and Measures of Disease Progression

Since DMD is a condition marked by functional limitations that change over many years, researchers also use long-term observational cohort studies to explore disease progression. This evidence contributes to understanding symptom patterns over a much longer period than the initial clinical trials allow.

These longer-duration studies explored outcomes related to physical discomfort and functional imbalance, such as the age or time point corresponding to the Loss of Ambulation (LoA). Observational data described the median age at LoA in the study populations. Research was observed in these populations to track key measures of systemic function, including pulmonary function markers (like Forced Vital Capacity, or FVC) over extended time intervals. This type of research provides context but is derived from observational settings, unlike the initial controlled trials.

What is Still Uncertain in the Research Landscape

While the research provides context for Deflan’s use, scientific and regulatory reviews indicate that evidence quality varies across studies and specific limitations exist. One key area of uncertainty is that comparative evidence is lacking for robust, head-to-head comparisons against other corticosteroids on all functional outcomes. Additionally, long-term effects are not fully established by controlled trials, meaning the research provides context but study results reflect the specific conditions under which they were conducted over many years.

Frequently Asked Questions (FAQ)

Common questions about Deflan (FAQ)


Q: Is Deflan the same as Prednisone or another similar drug?

Deflan (deflazacort) is classified as a glucocorticoid, which is derived from a compound similar to prednisone. Both are potent steroids with anti-inflammatory effects. However, some regulatory data suggests Deflan may have different effects on bone metabolism and weight gain compared to other steroids in the same class.


Q: What kind of conditions is Deflan approved to treat?

In the United States, official product information states that Deflan is specifically indicated for the treatment of Duchenne muscular dystrophy (DMD). This approval applies to patients who are 2 years of age and older.


Q: Can Deflan be used for autoimmune disorders?

Deflan is a potent glucocorticoid that works as an immunosuppressive and anti-inflammatory agent, meaning it helps modulate the immune system. While the drug’s mechanism makes it relevant for conditions driven by immune activity, the primary US approved indication is specifically for Duchenne muscular dystrophy.


Q: What are the official safety classifications for Deflan?

According to regulatory documents, Deflan is a prescription-only medication (Rx-only). Furthermore, it is not classified as a controlled substance under the US Controlled Substances Act (CSA).


Q: Why is Deflan sometimes prescribed instead of other drugs in the same class?

Deflan holds a unique regulatory position as the only corticosteroid specifically approved by the FDA for treating Duchenne muscular dystrophy. Additionally, some data suggest differences in the side effect profile, particularly concerning weight gain and bone health, compared to other glucocorticoids.


Q: How does Deflan's purpose differ from a typical non-steroidal anti-inflammatory drug (NSAID)?

Deflan is a corticosteroid that works by modulating the immune system and reducing inflammation at a genetic level (immunosuppression). In contrast, typical NSAIDs (like ibuprofen) are non-steroidal agents that primarily block the action of certain enzymes involved in inflammation. NSAIDs do not provide the systemic immunosuppressive effects of Deflan.


Q: Is Deflan known to interact with blood pressure medications?

As a corticosteroid, Deflan can potentially cause or worsen hypertension (high blood pressure). Regulatory warnings indicate that medical management of existing conditions, such as monitoring and potential adjustment of co-administered medications, may be necessary.


Q: What are the major themes of safety research on Deflan?

The major themes of safety research on Deflan focus on long-term effects associated with its class of drugs. This includes studies on bone mineral density (osteoporosis risk), glucose metabolism, growth and development in children, and the preservation of cardiac function.


Q: What is the longest period Deflan is typically used for?

Regulatory warnings address risks associated with prolonged use because the drug is used for managing a chronic, progressive condition like Duchenne muscular dystrophy. Therefore, it is often taken for an extended duration (long-term use), and no maximum time limit is specified in the official information.


Q: Can Deflan affect sleep patterns?

Yes, official patient information and regulatory documents list sleep problems, difficulty falling asleep, and insomnia as potential side effects of Deflan.


Q: Is it normal to feel a burst of energy when starting Deflan?

The official labeling classifies euphoria (an unusual sense of well-being) and mood swings as potential behavioral and mood disturbances associated with the drug's use. These effects can sometimes be interpreted as changes in energy levels.


Q: Is Deflan available without a prescription?

No, Deflan is a prescription-only medication (Rx-only) and must be obtained with a valid prescription.


Q: What is the approved use of Deflan in different countries?

The specific approved indications for Deflan (deflazacort) can vary depending on the country's regulatory body. While the primary US indication is Duchenne Muscular Dystrophy, the drug has been licensed in other countries for a broader range of inflammatory conditions.


Q: Is there a generic version of Deflan available?

Yes, regulatory news confirms that the FDA has approved the first generic version of the deflazacort oral suspension.


Q: Are there any gender-specific concerns listed for Deflan?

Yes, documented side effects include irregular or absent menstrual periods and increased hair growth (hirsutism), especially on the face, in females.


Q: Do doctors ever prescribe Deflan for a short period only?

Regulatory documents indicate that patients on long-term Deflan therapy may require a temporary increase in their dose for a short period during times of acute stress, such as major surgery or serious infection.


Q: What should be done if a dose of Deflan is forgotten?

Official patient instructions describe what actions to take if a dose is forgotten. These instructions generally cover taking the dose as soon as remembered, skipping the dose if the next one is near, and state that doubling the dose to catch up is not advised.


Q: Is it necessary to have certain tests done before starting Deflan?

While the drug requires long-term monitoring for potential complications, including checking blood pressure, blood glucose, bone density, and eye health, regulatory documents indicate that medical professionals are responsible for determining which specific tests are necessary before and during treatment based on an individual’s health history.


Q: Do health bodies classify Deflan as a controlled substance?

No, Deflan is not classified as a controlled substance by US health bodies.


Q: Is the effect of Deflan immediate or does it build up over time?

The drug is a prodrug that is rapidly converted to its active metabolite, which peaks in the plasma approximately 1.5–2 hours after administration. This indicates a rapid onset of systemic action, though the full therapeutic benefit for the approved condition takes time to develop.

How should Deflan be stored and disposed of?

Storage and Disposal Conditions for Deflazacort

Deflazacort tablets and oral suspension must be stored at room temperature (20 C to 25 C), away from heat, moisture, and direct light. The medicine must be kept from freezing.

Storage Requirement Rule
Temperature Room temperature (20 C to 25 C)
Protection Keep away from heat, moisture, and direct light
Freezing Must be kept from freezing
Container Store in original, tightly closed container
Child Safety Keep out of the reach of children and pets

For the oral suspension, any unused product must be discarded 1 month (30 days) after first opening the bottle. Expired or unused medicine should be disposed of through an official drug take-back program. If a take-back option is unavailable, the medicine should be mixed with an unappealing substance and placed in the household trash, following governmental guidelines.

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

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