Budesonide is a potent corticosteroid that reduces inflammation and suppresses the immune system.
It is used to treat asthma (via inhaler), inflammatory bowel diseases like Crohn’s disease and ulcerative colitis (via oral capsules/tablets), eosinophilic esophagitis, and certain kidney diseases.
Budesonide acts locally where it is applied, allowing it to treat specific tissues while minimizing widespread side effects.
Respiratory (Inhalation): Used to prevent asthma symptoms and wheezing. (Pulmicort, Symbicort—which includes formoterol)
Gastrointestinal (Oral): Used to treat Crohn’s disease and ulcerative colitis.
Esophagus:m Treats eosinophilic esophagitis.
Treats allergic rhinitis and nasal polyps.
Common Side Effects
Nasal irritation or nosebleeds (spray) Thrush/oral candidiasis (inhaler) Headache Nausea (oral)
More Serious Concerns
Adrenal suppression with long-term use Increased infection risk Bone density loss over time Not for acute asthma attacks
Oral forms can sometimes cause oral thrush in the mouth.
Serious:- Long-term use or high doses can suppress the immune system, leading to an increased risk of severe infections.
It may also cause adrenal gland problems or affect growth in children.
Its advantages: Targeted action — works locally with less systemic absorption than prednisone
Has a high first-pass metabolism — meaning the liver breaks most of it down before it reaches the bloodstream, reducing systemic side effects compared to other steroids.
Fewer side effects than traditional steroids
Well-studied, long track record
Available OTC in nasal spray form