Fluticasone propionate is an inhaled corticosteroid (ICS) that has become the standard of care for long-term management of feline asthma and chronic allergic airway disease. Delivered via a metered-dose inhaler (MDI) through a specially designed feline spacer device called the AeroKat, fluticasone provides potent anti-inflammatory effects directly to the airways while minimizing the systemic side effects associated with oral or injectable corticosteroids.
Overview
Feline asthma affects an estimated 1 to 5 percent of cats and is characterized by chronic inflammation and bronchoconstriction of the lower airways. Historically, cats with asthma were treated with oral prednisolone or injectable steroids, which are effective but carry significant systemic side effects with long-term use. Inhaled fluticasone offers a targeted alternative: the drug is deposited directly in the airways, where it reduces inflammation, mucus production, and airway remodeling. Because very little of the inhaled drug reaches the systemic circulation, the risks of diabetes, immunosuppression, and adrenal suppression are markedly reduced compared to oral corticosteroids.
Uses
- Feline asthma: First-line maintenance therapy to reduce airway inflammation and prevent asthma episodes.
- Chronic bronchitis: Long-term inflammation control in cats with chronic lower airway disease.
- Allergic airway disease: Management of eosinophilic airway inflammation.
Note: Fluticasone is a controller medication for chronic management. It does not provide immediate bronchodilation during an acute asthma attack. A rescue inhaler (albuterol) should always be available for emergencies.
Dosage
| Parameter | Detail |
|---|---|
| Dose (cats) | 44–220 mcg per actuation; 1 puff every 12 hours |
| Starting dose | 110 mcg per puff, twice daily |
| Delivery device | Metered-dose inhaler (MDI) with AeroKat feline spacer |
| Frequency | Every 12 hours |
| Onset of full effect | 1–2 weeks for full anti-inflammatory benefit |
Important dosing notes:
- Prime the inhaler (4 test sprays) before first use or if not used for several days.
- Attach the MDI to the AeroKat spacer, actuate one puff, and hold the mask gently over your cat’s nose and mouth for 7 to 10 breaths (approximately 10 seconds).
- Most cats can be trained to accept the AeroKat with patience and positive reinforcement.
- Your veterinarian may start with oral prednisolone and transition to inhaled fluticasone, or start directly with the inhaler depending on disease severity.
- Do not abruptly stop fluticasone without veterinary guidance, especially if your cat was transitioned from oral steroids.
Side Effects
| Common Side Effects | Serious Side Effects (Contact Your Vet) |
|---|---|
| Mild oral irritation or licking after dosing | Signs of uncontrolled asthma despite treatment (increased coughing, open-mouth breathing) |
| Occasional sneezing after inhalation | Secondary respiratory infection (increased discharge, fever) |
| Mild behavioral resistance to spacer | Signs of systemic steroid effects at high doses (increased thirst, urination) |
Inhaled fluticasone is remarkably well tolerated in cats. Systemic side effects are rare at standard doses but can occur at higher doses or with prolonged use.
Drug Interactions
- Oral or injectable corticosteroids: Concurrent use increases total corticosteroid exposure; your veterinarian will taper oral steroids as inhaled therapy takes effect.
- Ketoconazole and other CYP3A4 inhibitors: May increase fluticasone levels and systemic absorption.
- Beta-blockers (atenolol): May reduce the efficacy of concurrent rescue bronchodilator (albuterol) therapy.
Contraindications
- Do not use in cats with active respiratory infections (bacterial, fungal) without concurrent antimicrobial treatment.
- Not appropriate as sole treatment during acute asthma crisis; a rescue bronchodilator is needed.
- Use with caution in cats with diabetes mellitus, as high-dose inhaled steroids may affect glucose regulation.
- Safety in pregnant or lactating cats has not been established.
Storage
- Store the MDI at room temperature (59–77 degrees F / 15–25 degrees C).
- Do not puncture, expose to heat, or incinerate the canister.
- Keep the AeroKat spacer clean by washing with mild soap and water periodically; allow to air dry.
- Track the number of actuations used; replace the inhaler when the labeled number of doses is reached.
- Keep out of reach of children and pets.
FAQ
Q: How do I train my cat to accept the AeroKat spacer? A: Start by allowing your cat to sniff and explore the spacer without the inhaler attached. Offer treats and positive reinforcement. Gradually hold the mask near the face, then over the nose and mouth for increasing durations before adding the inhaler. Most cats accept the device within 1 to 2 weeks of gentle, consistent training.
Q: Can I use fluticasone alone for asthma, or does my cat need albuterol too? A: Fluticasone is a controller medication that prevents inflammation. It does not provide rapid bronchodilation. Your veterinarian will likely prescribe both: fluticasone for daily maintenance and albuterol as a rescue inhaler for acute flare-ups.
Q: Is inhaled fluticasone safer than oral prednisolone for my cat? A: Yes, for long-term use. Inhaled fluticasone delivers medication directly to the airways with minimal systemic absorption, greatly reducing the risk of diabetes, adrenal suppression, and immunosuppression compared to chronic oral prednisolone. However, oral steroids may still be needed in severe cases or during initial stabilization.
Q: Why not just use prednisone instead of prednisolone in my cat? A: Cats have limited ability to convert prednisone to its active form, prednisolone, in the liver. For this reason, prednisolone (not prednisone) should always be used when oral corticosteroids are prescribed for cats.
This content is for informational purposes only and is not a substitute for professional veterinary advice. Always consult your veterinarian before starting, changing, or stopping any medication for your cat.