Compare Flunisolide vs. Pulmicort Flexhaler

Head-to-head comparisons of medication uses, side effects, ratings, and more.

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Controls asthma.

Pulmicort Flexhaler (budesonide) is good for controlling and preventing asthma symptoms, but it's not a rescue inhaler and must be taken daily.

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  • Pulmicort Flexhaler (budesonide) is an inhaled corticosteroid, which is the most effective class of medicines to manage asthma when taken daily. People can notice an improvement in asthma control within 24 hours of starting treatment.
  • Taking Pulmicort Flexhaler (budesonide) into the lungs has fewer side effects than taking a pill by mouth.
  • Safe for use by children 6 years and older.
  • Doesn't need to be primed again after the first prime, even if you haven't used it for a long time.
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  • Can take 1 to 2 weeks or more for full benefit on asthma symptoms.
  • Can cause fungal infections of the mouth and throat, especially if you don't rinse your mouth after use.
Used for
  • Asthma Perennial allergic rhinitis Seasonal allergic rhinitis
  • Eosinophilic nonallergic rhinitis Sinusitis
Dosage forms
  • Inhaler
  • Nasal spray
  • Inhaler
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Side effects
The Aerospan (Flunisolide) FDA package insert doesn’t have numbers about how common side effects are.
7possible side effects
  • Common cold symptoms
  • Stuffy nose
  • Sore throat
  • Runny, stuffy nose
  • Viral infection of airways, nose, and throat
  • Nausea
  • Viral stomach flu
See more detailed side effects
Risks and risk factors
No information currently available
  • Serious allergic reaction
    • Milk protein allergy
  • Mouth and throat infection
    • Not rinsing mouth after use
    • Using higher dose of Pulmicort Flexhaler (budesonide)
  • Weakened immune system
    • Not current with vaccinations
    • Taking other steroid medicines
    • Current infection without treatment
  • Adrenal gland problems
    • Switching from steroid pills to steroid inhalers
    • Long-term use of steroid medicines
    • Stopping steroid medicines too quickly
  • Bone loss
    • History of osteoporosis
    • Taking other medicines that cause bone loss
    • Long-term use of steroid medicines
  • Slower growth rate in children
    • Children
    • High doses of Pulmicort Flexhaler (budesonide)
    • Long-term use of Pulmicort Flexhaler (budesonide)
See more detailed risks and warnings