Praxis Medical Insights

Est. 2024 • Clinical Guidelines Distilled

Made possible by volunteer editors from the University of Calgary & University of Alberta

Last Updated: 7/6/2025

Asthma Management

Introduction to Inhaled Corticosteroids

  • The American Thoracic Society recommends considering the potency and equivalence of different inhaled corticosteroids when selecting a treatment, with the following equivalent daily doses:
Inhaled Corticosteroid Equivalent Daily Dose (μg)
Beclomethasone dipropionate (QVAR) 400
Budesonide DPI (Pulmicort) 800
Fluticasone propionate (Flovent/Flixotide) 200-250
Mometasone (Asmanex) 200-220
Ciclesonide (Alvesco) 160-320
Triamcinolone acetonide (Azmacort) 1000-2000
Flunisolide (Aerospan) 1000 [1]

Local Effects and Safety

  • Oropharyngeal candidiasis is more common with beclomethasone dipropionate than with some other inhaled corticosteroids like triamcinolone acetonide, with a strength of evidence based on clinical studies 1
  • High-dose ICS therapy may be associated with systemic effects, including potential adrenal suppression 2
  • For patients with severe or refractory asthma, higher doses (>1,260 μg/day) of inhaled corticosteroids may be required, according to the American Journal of Respiratory and Critical Care Medicine 3

Dosing and Administration

  • The American Academy of Allergy, Asthma, and Immunology suggests that when switching between inhaled corticosteroids, use the equivalence table to maintain appropriate anti-inflammatory effects, and consider device characteristics and patient technique when selecting an inhaled corticosteroid, with a strength of evidence based on clinical guidelines 3
  • For adults with persistent asthma inadequately controlled on other therapies, 400 μg/day of QVAR provides equivalent control to 800 μg/day of budesonide DPI, as part of a strategy to optimize asthma management 4
  • For non-specific cough in children with asthma risk factors, guidelines suggest a short (2-4 weeks) trial of 400 mg/day of beclomethasone equivalent, to assess the response to treatment and adjust the management plan accordingly 4
  • Available ICS brand names and formulations include:

Mechanism of Action and Efficacy

  • ICS reduce airway hyperresponsiveness, inhibit inflammatory cell migration and activation, and block late-phase reactions to allergens 7
  • For patients with persistent asthma, ICS are the most consistently effective long-term control medication at all steps of care 7
  • ICS improve asthma control more effectively than leukotriene receptor antagonists or any other single long-term control medication 7
  • LABAs should never be used as monotherapy for asthma control; they must always be prescribed with an ICS 7