Overview
Budesonide/formoterol is a combination inhaler containing an inhaled corticosteroid (budesonide) and a long-acting beta2-agonist (formoterol). It is used for maintenance treatment of asthma and COPD to reduce inflammation and bronchoconstriction. This medication is not for acute relief of bronchospasm.
Mechanism of Action
Budesonide is an inhaled corticosteroid that reduces airway inflammation by inhibiting multiple inflammatory cells and mediators. Formoterol is a long-acting beta2-adrenergic agonist that produces bronchodilation by relaxing bronchial smooth muscle through stimulation of intracellular adenylate cyclase.
Indications
- Maintenance treatment of asthma in patients 6 years and older
- Maintenance treatment of airflow obstruction in patients with COPD, including chronic bronchitis and emphysema
Common Doses
- 80 mcg budesonide/4.5 mcg formoterol per inhalation
- 160 mcg budesonide/4.5 mcg formoterol per inhalation
Dosage
For asthma: Typically 2 inhalations twice daily (morning and evening). For COPD: Typically 2 inhalations twice daily. Dosage should be individualized based on disease severity and response.
Contraindications
- Primary treatment of status asthmaticus or other acute episodes of asthma or COPD where intensive measures are required
- Hypersensitivity to budesonide, formoterol, or any ingredients in the formulation
Side Effects
- Headache
- Throat irritation
- Upper respiratory tract infection
- Oral candidiasis (thrush)
- Tremor
- Palpitations
- Increased heart rate
- Cough
- Hoarseness
- Bronchitis
- Sinusitis
Interactions
- Beta-blockers may reduce effectiveness and cause bronchospasm
- Diuretics may potentiate hypokalemia
- Monoamine oxidase inhibitors and tricyclic antidepressants may potentiate cardiovascular effects
- Ketoconazole and other strong CYP3A4 inhibitors may increase budesonide exposure
Counseling Points
- Rinse mouth with water after each use to prevent oral thrush
- Use regularly as prescribed, not for acute symptom relief
- Do not exceed prescribed dosage
- Keep quick-relief inhaler available for acute symptoms
- Notify healthcare provider if asthma worsens or if needing more quick-relief medication
- Proper inhaler technique is essential for effectiveness