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pulmicort flexhaler

Pulmicort Flexhaler (Budesonide) is a corticosteroid used to treat Perennial Allergic Rhinitis, Inflammatory Bowel Diseases.

Budesonide · by Cheplapharm

Not yet rated· sourced from the FDA label
Rated against independent regulatory sources·Last updated June 7, 2026·How we rate
Verified againstopenFDANIH DailyMedRxClass
$0.75 /mL
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Key facts

Active ingredient
Budesonide
Drug class
Corticosteroid
Form
Spray/Inhaler
Strength
Budesonide 0.08MG/INH · Budesonide 0.16MG/INH
Type
Prescription (Rx)
Brand or generic
Brand-name
Manufacturer
Cheplapharm
Half-life
about 2 to 3.6 hours (terminal elimination half-life, measured after intravenous dosing) (how long it stays in your system)
What the pharmacy pays
~$0.75 per ml — not your price
FDA application
NDA021949

What is Pulmicort Flexhaler?

From the FDA label:Budesonide, the active component of PULMICORT FLEXHALER, is a corticosteroid designated chemically as (RS)-11β, 16α, 17,21-Tetrahydroxypregna-1,4-diene-3,20-dione cyclic 16,17-acetal with butyraldehyde. Budesonide is provided as a mixture of two epimers (22R and 22S). The empirical formula of budesonide is C 25 H 34 O 6 and its molecular weight is 430.5. Its structural formula is: Budesonide is a white to off-white, tasteless, odorless powder that is practically insoluble in water and in heptane, sparingly soluble in ethanol, and freely soluble in chloroform. Its partition coefficient between octanol and water at pH 7.4 is 1.6 x 10 3 . PULMICORT FLEXHALER is an inhalation-driven multi-dose dry powder inhaler containing a formulation of 1 mg per actuation of micronized budesonide and micronized lactose monohydrate which contains trace levels of milk proteins [see Contraindications (4) , Adverse Reactions (6.2) ] . Each actuation of PULMICORT FLEXHALER 180 mcg delivers 160 mcg budesonide from the mouthpiece and each actuation of PULMICORT FLEXHALER 90 mcg delivers 80 mcg budesonide from the mouthpiece (based on in vitro testing at 60 L/min for 2 sec). Each PULMICORT FLEXHALER 180 mcg contains 120 actuations and each PULMICORT FLEXHALER 90 mcg contains 60 actuations. In vitro testing has shown that the dose delivery for PULMICORT FLEXHALER is dependent on airflow through the…

How to use

PULMICORT FLEXHALER should be administered twice daily by the orally inhaled route only. After inhalation, the patient should rinse the mouth with water without swallowing [see Patient Counseling Information (17.1) ] . Patients should be instructed to prime PULMICORT FLEXHALER prior to its initial use, and instructed to inhale deeply and forcefully each time the device is used. The safety and efficacy of PULMICORT FLEXHALER when administered in excess of recommended doses have not been established. After asthma stability has been achieved, it is desirable to titrate to the lowest effective dosage to reduce the possibility of side effects. For patients who do not respond adequately to the starting dose after 1-2 weeks of therapy with PULMICORT FLEXHALER, increasing the dose may provide additional asthma control. For oral inhalation only. • Patients 18 Years of Age and Older: For patients 18 years of age and older, the recommended starting dosage is 360 mcg twice daily. In some adult patients, a starting dose of 180 mcg twice daily may be adequate. The maximum dosage should not exceed 720 mcg twice daily ( 2.1 ) • Patients 6 to 17 Years of Age: The recommended starting dosage is 180 mcg twice daily. In some pediatric patients, a starting dose of 360 mcg twice daily may be appropriate. The maximum dosage should not exceed 360 mcg twice daily ( 2.1 ) 2.1 Asthma If asthma symptoms…

Side effects

Systemic and inhaled corticosteroid use may result in the following: • Candida albicans Infection [see Warnings and Precautions (5.1) ] • Hypersensitivity Including Anaphylaxis [see Warnings and Precautions (5.3) ] • Immunosuppression [see Warnings and Precautions (5.4) ] • Hypercorticism and Adrenal Suppression [see Warnings and Precautions (5.6) ] • Reduction in Bone Mineral Density [see Warnings and Precautions (5.8) ] • Growth Effects [see Warnings and Precautions (5.9) , Use in Specific Populations (8.4) ] • Glaucoma and Cataracts [see Warnings and Precautions (5.10) ] • Eosinophilic Conditions and Churg-Strauss [see Warnings and Precautions (5.12) ] Most common adverse reactions (incidence ≥1%) are nasopharyngitis, nasal congestion, pharyngitis, rhinitis allergic, viral upper respiratory tract infection, nausea, viral gastroenteritis, otitis media, oral candidiasis ( 6.1 ) To report SUSPECTED ADVERSE REACTIONS, contact the Safety Call Center at 1-888-994-8116 or FDA at 1-800-FDA-1088 or www.fda.gov/medwatch 6.1 Clinical Trials Experience Because clinical trials are conducted under widely varying conditions, adverse reaction rates observed in the clinical trials of a drug cannot be directly compared to rates in the clinical trials of another drug and may not reflect the rates observed in practice. PULMICORT FLEXHALER Patients 6 years and older The incidence of common…

Warnings

Important safety information

Localized Infections: Candida albicans infection of the mouth and throat may occur. Monitor patients periodically for signs of adverse effects on the oral cavity. Advise patients to rinse the mouth following inhalation ( 5.1 ) • Deterioration of Asthma or Acute Episodes: PULMICORT FLEXHALER should not be used for relief of acute symptoms. Patients require immediate re-evaluation during rapidly deteriorating asthma ( 5.2 ) • Hypersensitivity Reactions: Anaphylaxis, rash, contact dermatitis, urticaria, angioedema, and bronchospasm have been reported with use of PULMICORT FLEXHALER. Discontinue PULMICORT FLEXHALER if such reactions occur ( 5.3 ) • Immunosuppression: Potential worsening of infections (e.g., existing tuberculosis, fungal, bacterial, viral, or parasitic infection; or ocular herpes simplex). Use with caution in patients with these infections. More serious or even fatal course of chickenpox or measles can occur in susceptible patients ( 5.4 ) • Transferring Patients from Systemic Corticosteroid Therapy: Risk of impaired adrenal function when transferring from oral steroids. Taper patients slowly from systemic corticosteroids if transferring to PULMICORT FLEXHALER ( 5.5 ) • Hypercorticism and Adrenal Suppression: May occur with very high dosages or at the regular dosage in susceptible individuals. If such changes occur, reduce PULMICORT FLEXHALER slowly ( 5.6 ) • Reduction in Bone Mineral Density with Long term Administration: Monitor patients with major risk factors for decreased bone mineral content ( 5.8 ) • Effects on Growth: Monitor growth of pediatric patients ( 5.9 ) • Glaucoma and Cataracts: Close monitoring is warranted ( 5.10 ) • Paradoxical Bronchospasm: Discontinue PULMICORT FLEXHALER and institute alternative therapy if paradoxical bronchospasm occurs ( 5.11 ) • Eosinophilic Conditions and Churg-Strauss Syndrome: Be alert to eosinophilic conditions ( 5.12 ) 5.1 Local Effects In clinical studies, the development of localized infections of the mouth and pharynx with Candida albicans has occurred in patients treated with PULMICORT FLEXHALER. When such an infection develops, it should be treated with appropriate local or systemic (i.e., oral antifungal) therapy while treatment with PULMICORT FLEXHALER continues, but at times, therapy with PULMICORT FLEXHALER may need to be interrupted. Patients should rinse the mouth after inhalation of PULMICORT FLEXHALER. 5.2 Deterioration of Asthma or Acute Episodes PULMICORT FLEXHALER is not a bronchodilator and is not indicated for the rapid relief of bronchospasm or other acute episodes of asthma. Patients should be instructed to contact their physician immediately if episodes of asthma not responsive to their usual doses of bronchodilators occur during the course of treatment with PULMICORT FLEXHALER. During such episodes, patients may require therapy with oral corticosteroids. An inhaled short acting beta 2 -agonist, not PULMICORT FLEXHALER, should be used to relieve acute symptoms such as shortness of breath. When prescribing PULMICORT FLEXHALER, the physician must also provide the patient with an inhaled, short-acting beta 2 -agonist (e.g., albuterol) for treatment of acute symptoms, despite regular twice-daily (morning and evening) use of PULMICORT FLEXHALER. 5.3 Hypersensitivity Reactions Including Anaphylaxis Hypersensitivity reactions including anaphylaxis, rash, contact dermatitis, urticaria, angioedema, and bronchospasm have been reported with use of PULMICORT FLEXHALER. Discontinue PULMICORT FLEXHALER if such reactions occur [see Contraindications (4) , Adverse Reactions (6) ] . PULMICORT FLEXHALER contains small amounts of lactose, which contains trace levels of milk proteins. It is possible that cough, wheezing, or bronchospasm may occur in patients who have a severe milk protein allergy [see Contraindications (4) , Adverse Reactions (6.2) ] . 5.4 Immunosuppression Patients who are on drugs that suppress the immune system are more susceptible to infection than healthy individuals. Chicken pox and measles, for example, can have a more serious or even fatal course in susceptible children or adults using corticosteroids. In children or adults who have not had these diseases or been properly immunized, particular care should be taken to avoid exposure. How the dose, route, and duration of corticosteroid administration affects the risk of developing a disseminated infection is not known. The contribution of the underlying disease and/or prior corticosteroid treatment to the risk is also not known. If exposed to chicken pox, therapy with varicella zoster immune globulin (VZIG) or pooled intravenous immunoglobulin (IVIG), as appropriate, may be indicated. If exposed to measles, prophylaxis with pooled intramuscular immunoglobulin (IG) may be indicated (see the respective package inserts for complete VZIG and IG prescribing information). If chicken pox develops, treatment with antiviral agents may be considered. The immune responsiveness to varicella vaccine was evaluated in pediatric patients with asthma ages 12 months to 8 years with budesonide inhalation suspension. An open-label, nonrandomized clinical study examined the immune responsiveness to varicella vaccine in 243 asthma patients 12 months to 8 years of age who were treated with budesonide inhalation suspension 0.25 mg to 1 mg daily (n=151) or non-corticosteroid asthma therapy (n=92) (i.e., beta 2 -agonists, leukotriene receptor antagonists, cromones). The percentage of patients developing a seroprotective antibody titer of ≥5.0 (gpELISA value) in response to the vaccination was similar in patients treated with budesonide inhalation suspension (85%), compared to patients treated with non-corticosteroid asthma therapy (90%). No patient treated with budesonide inhalation suspension developed chicken pox as a result of vaccination. Inhaled corticosteroids should be used with caution, if at all, in patients with active or quiescent tuberculosis infection of the respiratory tract, untreated systemic fungal, bacterial, viral or parasitic infections, or ocular herpes simplex. 5.5 Transferring Patients from Systemic Corticosteroid Therapy Particular care is needed for patients who are transferred from systemically active corticosteroids to PULMICORT FLEXHALER because deaths due to adrenal insufficiency have occurred in asthmatic patients during and after transfer from systemic corticosteroids to less systemically available inhaled corticosteroids. After withdrawal from systemic corticosteroids, a number of months are required for recovery of hypothalamic-pituitary-adrenal (HPA) function. Patients who have been previously maintained on 20 mg or more per day of prednisone (or its equivalent) may be most susceptible, particularly when their systemic corticosteroids have been almost completely withdrawn. During this period of HPA suppression, patients may exhibit signs and symptoms of adrenal insufficiency when exposed to trauma, surgery, or infection (particularly gastroenteritis) or other conditions associated with severe electrolyte loss. Although PULMICORT FLEXHALER may provide control of asthma symptoms during these episodes, in recommended doses it supplies less than normal physiological amounts of glucocorticoid systemically and does NOT provide the mineralocorticoid activity that is necessary for coping with these emergencies. During periods of stress or a severe asthma attack, patients who have been withdrawn from systemic corticosteroids should be instructed to resume oral corticosteroids (in large doses) immediately and to contact their physicians for further instruction. These patients should also be instructed to carry a medical identification card indicating that they may need supplementary systemic corticosteroids during periods of stress or a severe asthma attack. Patients requiring oral corticosteroids should be weaned slowly from systemic corticosteroid use after transferring to PULMICORT FLEXHALER. Prednisone reduction…

Who should not take Pulmicort Flexhaler

The use of PULMICORT FLEXHALER is contraindicated in the following conditions: • Primary treatment of status asthmaticus or other acute episodes of asthma where intensive measures are required. • Severe hypersensitivity to milk proteins or any ingredients of PULMICORT FLEXHALER [see Warnings and Precautions (5.3) , Description (11) ]. • Primary treatment of status asthmaticus or other acute episodes of asthma where intensive measures are required ( 4 ) • Severe hypersensitivity to milk proteins and any of the ingredients in PULMICORT FLEXHALER ( 4 )

Overdose — what happens if you take too much

The potential for acute toxic effects following overdose of PULMICORT FLEXHALER is low. If used at excessive doses for prolonged periods, systemic corticosteroid effects such as hypercorticism may occur [see Warnings and Precautions (5.6) ] . Another budesonide-containing dry powder inhaler at 3200 mcg daily administered for 6 weeks caused a significant reduction (27%) in the plasma cortisol response to a 6-hour infusion of ACTH compared with placebo (+1%). The corresponding effect of 10 mg prednisone daily was a 35% reduction in the plasma cortisol response to ACTH. Postmarketing experience showed that acute overdose of inhaled budesonide commonly remained asymptomatic. The use of excessive doses (up to 6400 mcg daily) for prolonged periods showed systemic corticosteroid effects such as hypercorticism.

U.S. Poison Control: call or text 1-800-222-1222 (free, 24/7). In an emergency call 911. From the FDA label; not medical advice.

Interactions

Strong Cytochrome P450 3A4 Inhibitors (e.g., ritonavir): Use with caution. May cause increased systemic corticosteroid effects ( 5.7 , 7.1 ) 7.1 Inhibitors of Cytochrome P450 3A4 The main route of metabolism of corticosteroids, including budesonide, is via cytochrome P450 (CYP) isoenzyme 3A4 (CYP3A4). After oral administration of ketoconazole, a strong inhibitor of CYP3A4, the mean plasma concentration of orally administered budesonide increased. Concomitant administration of CYP3A4 may inhibit the metabolism of, and increase the systemic exposure to, budesonide. Caution should be exercised when considering the co-administration of PULMICORT FLEXHALER with long-term ketoconazole and other known strong CYP3A4 inhibitors (e.g., ritonavir, atazanavir, clarithromycin, indinavir, itraconazole, nefazodone, nelfinavir, saquinavir, telithromycin) [see Warnings and Precautions (5.7) ] .

How long does Budesonide stay in your body?

The elimination half-life of budesonide is about 2 to 3.6 hours (terminal elimination half-life, measured after intravenous dosing) — the time it takes the body to clear about half of it. As a rule of thumb, a medicine is mostly gone after roughly 4 to 5 half-lives, though this varies from person to person with age and kidney or liver function. The label reports the true (terminal) plasma elimination half-life from IV dosing as 2 to 3.6 hours, the same in healthy adults and Crohn's disease patients. The APPARENT half-life after ORAL dosing is longer — mean 6.3 ± 1.6 hours (range 2 to 8 hours) after a single 9 mg dose in healthy fasted subjects — because absorption is slower than elimination (flip-flop kinetics), not because the drug lingers; use the ~2–3.6 h IV figure as the elimination half-life. Budesonide is NOT a prodrug and has NO longer-lasting active metabolite: its two major CYP3A4 metabolites (6β-hydroxy budesonide and 16α-hydroxy prednisolone) have negligible corticosteroid activity (<1/100 of the parent). Liver impairment: budesonide is a high-hepatic-clearance drug, so systemic exposure rises with impaired liver function — patients with moderate impairment (Child-Pugh B) had a 3.5-fold higher AUC than those with normal liver function, and the label says to avoid use in severe impairment (Child-Pugh C). Kidney impairment: the label gives no PK half-life change (budesonide is cleared hepatically, not renally). Older adults: the label states studies did not include enough patients aged 65+ to characterize any difference. This is an elimination half-life, not a drug-test detection window and not dosing guidance.

This is general information, not medical advice. It doesn’t tell you when a drug test would read negative (tests detect substances for different, often longer, windows) or when it’s safe to take another dose — ask your pharmacist or prescriber. Source: Budesonide (oral) FDA label, §12.3 Pharmacokinetics — DailyMed.

Drug class

How this class works, per Corticosteroids - StatPearls - NCBI Bookshelf.

May treat (source: NIH RxClass)

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Dosage forms

Spray/Inhaler

The forms currently marketed in the U.S., per the FDA National Drug Code Directory.

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Frequently asked questions

What does Pulmicort Flexhaler treat?
Pulmicort Flexhaler (Budesonide) may be used to treat perennial allergic rhinitis, inflammatory bowel diseases, based on NIH RxClass drug-classification data (conditions a drug may treat — not a verbatim copy of the FDA-approved label). This is general reference, not medical advice.
How does Pulmicort Flexhaler work?
Pulmicort Flexhaler is a corticosteroid. Corticosteroids mimic the body's natural stress hormone cortisol: they enter cells and bind a glucocorticoid receptor that switches off genes for inflammatory chemicals, calming swelling, redness, and an overactive immune response.
How much does Pulmicort Flexhaler cost?
Nobody can tell you what you will pay — your price is set by your insurer's formulary, your deductible and the pharmacy's markup, and none of those are published. What IS published is what the pharmacy paid to acquire it: about $0.75 per ml, per the CMS NADAC survey. Treat that as the floor, not the quote — ask the pharmacist for the cash price as well as your copay, because for cheap generics the cash price often wins. Pharmacies pay less for a same-class option, Pred Forte — about $0.60 on the same basis.
Is there a coupon or discount for Pulmicort Flexhaler?
pharmaranks is an independent ratings site, not a pharmacy — we don't issue coupons or sell Pulmicort Flexhaler. To pay less, ask your prescriber or pharmacist whether a generic equivalent exists, check the manufacturer's copay/savings card and patient-assistance program, and compare a pharmacy discount card against your insurance copay. Prices vary by pharmacy, insurance, and location, so always confirm at the counter. This is general reference, not medical or financial advice.
Who makes Pulmicort Flexhaler?
Pulmicort Flexhaler is marketed by Cheplapharm. You can see Cheplapharm's full profile, rating, and other products on pharmaranks.
Is Pulmicort Flexhaler a brand-name or generic drug?
Pulmicort Flexhaler is a brand-name product with the active ingredient Budesonide.
Is Pulmicort Flexhaler available over the counter?
No. Pulmicort Flexhaler is a prescription (Rx) medication in the US — you need a prescription from a licensed clinician (in person or via telehealth); it isn't sold over the counter. For some conditions there are OTC alternatives — ask your pharmacist.
What forms does Pulmicort Flexhaler come in?
Pulmicort Flexhaler is currently marketed as spray/inhaler, per the FDA's National Drug Code Directory.
What class of drug is Pulmicort Flexhaler?
Pulmicort Flexhaler is classified as corticosteroid, per the FDA's Established Pharmacologic Class.
Is Pulmicort Flexhaler FDA-registered?
Pulmicort Flexhaler is on record with the U.S. FDA under application number NDA021949. You can verify this on its official FDA label.
Is Pulmicort Flexhaler safe?
There's no single safe-or-not verdict, and we don't yet have a composite recall-safety score for Pulmicort Flexhaler. Review its FDA-label side effects and warnings below, and always consult a licensed professional.
What are the side effects of Pulmicort Flexhaler?
Pulmicort Flexhaler's side effects are taken directly from its FDA label. From the label: Systemic and inhaled corticosteroid use may result in the following: • Candida albicans Infection [see Warnings and Precautions (5.1) ] • Hypersensitivity Including Anaphylaxis [see Warnings and Precautions (5.3) ] • Immunosuppression [see Warnings and Precautions (5.4) ] • Hypercorticism and Adrena… Both common and serious reactions are documented in full on this page. This is general reference from the FDA, not medical advice — always consult a professional.

Clinical content sourced from the FDA label via openFDA (U.S. FDA). View the FDA label on DailyMed → Provided for general reference only — not medical advice. Always consult a licensed professional and the current prescribing information.

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