Equine Sports Council

Controlled Medications Library

ESC MEDICATION CLASSIFICATIONClass A - Therapeutic

ESC Medication Library · Revision 1

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Medication Facts

Performance enhancing
No
Total hours to clear
48
Frequently used
Most Prescribed
ESC ID
FLUTI-0420
Trade names
Flovent
Drug type
Corticosteroid / Glucocorticoid
Plasma half-life · hours
Not Publshed
Equine dosing
1 to 6 mcg/kg (or a flat dose of 1,000 to 3,000 mcg per horse) inhaled via an equine-specific aerosol mask system twice daily. Therapy is usually tapered over several weeks once clinical improvement is seen. This may be used with Albuterol nebulizer with no withdraw - consult with veterinarian.
Cmax · peak plasma concentration
10-50 pg/mL
Tmax · time to peak plasma concentration
Not recorded
ESC concentration guidance
CMAX or 100% of Efficacy
Primary withdrawal · hours
0
Washout withdrawal · hours
0
ESC control type
A1 - Generally Controlled - Therapeutic
Medication report required
Generally not required, however understand exceptions.

Uses & side effects

Chronic asthma managment

Product-specific side effects await source review.

Drug interactions

In horses, direct systemic drug interactions with inhaled fluticasone propionate are generally low because very little of the drug enters the bloodstream. However, caution is required when combining it with systemic corticosteroids, potent CYP3A4 liver enzyme inhibitors (like ketoconazole), or live vaccines and local immunosuppressive therapies.Important Considerations and InteractionsSystemic Corticosteroids: Combining inhaled fluticasone with systemic steroids (such as oral prednisone or injectable/oral dexamethasone) increases the risk of hypothalamic-pituitary-adrenal (HPA) axis suppression and systemic side effects like lethargy or laminitis risk, though less than systemic-only regimens.Liver Enzyme Inhibitors: Drugs that slow down liver metabolism (such as ketoconazole) can theoretically increase systemic accumulation if any swallowed portion of the inhaled drug is absorbed.Active Infections: Using fluticasone in horses with untreated bacterial, viral, or fungal respiratory infections can worsen the infection due to local immune suppression in the airways.Not a Rescue Drug: Fluticasone is a slow-acting maintenance controller for equine asthma (RAO/IAD) and should not be relied upon alongside or instead of acute bronchodilators during an emergency bronchospasm.

Contraindications

Corticosteroids (prednisone, dexamethasone), may cause active infections to worsen, ketoconazole, liver enzyme inhibitors

Sanctioning-body comparison

Plasma only. Compare published competition guidance for this medication. ESC guidance remains in Medication Facts above. A dosing guideline, withdrawal recommendation and laboratory detection threshold are different measures.

Sources reviewed September 23, 2026. “Not verified” means a gap in this comparison, not zero tolerance or permission. Doses describe the cited rules; your veterinarian must determine treatment and withdrawal.

Published guidance by organization
OrganizationPublished dose & routePlasma concentrationWithdrawal / timingControl / penalty class
AQHA Show HorsesShow rules · 2026 handbook
Conditions & sources

An unverified entry is not permission to use this medication. Consult the linked current rules.

Reviewed 2026-09-23

Not verified for this medication.Not verified for this medication.Not verified for this medication.Medication-specific control not yet verified.
APHA Paint Show HorsesShow rules · 2026 Rule Book
Conditions & sources

An unverified entry is not permission to use this medication. Consult the linked current rules.

Reviewed 2026-09-23

Not verified for this medication.Not verified for this medication.Not verified for this medication.Medication-specific control not yet verified.
ARCI Model RulesRacing model · Rules 15 / UCG 20.0 / CTMS 4.2.1
Conditions & sources

An unverified entry is not permission to use this medication. Consult the linked current rules. ARCI model comparison only; no state-specific rule is substituted. Schedule timing is tied to its stated regimen and is not a clearance guarantee.

UCG 20.0 PDF p. 30

Reviewed 2026-09-23

Not verified for this medication.Not verified for this medication.Not verified for this medication.Drug Class 4 · Penalty Class C. No dosing permission is implied by classification.
USEFNational Therapeutic Substance Provisions · 2026 + July amendment
Conditions & sources

An unverified entry is not permission to use this medication. Consult the linked current rules.

Reviewed 2026-09-23

Not verified for this medication.Not verified for this medication.Not verified for this medication.Medication-specific control not yet verified.