Absorption: <1% (aerosol), 814% (powder) absorbed following oral inhalation. Action is primarily local after inhalation.
Distribution: 1025% of inhaled corticosteroids is deposited in the airways if a spacer device is not used. With the use of a spacer, a greater percentage may reach the respiratory tract.
Protein Binding: 9199%.
Half-Life: 7.8 hr (propionate); 24 hr (furoate).
(improvement in symptoms)
ROUTE | ONSET | PEAK | DURATION |
Inhalation | within 24 hr | 14 wk‡ | several days after discontinuation |
‡Improvement in pulmonary function; decreased airway responsiveness may take longer.
Contraindicated in:
Use Cautiously in:
EENT: cataracts, dysphonia, glaucoma, hoarseness, nasal stuffiness, oropharyngeal fungal infections, rhinorrhea, sinusitis
Endo: adrenal suppression (high-dose, long-term therapy only), Cushing's syndrome, ↓bone mineral density, ↓growth (in children)
GI: diarrhea
MS: muscle pain
Resp: bronchospasm, cough, upper respiratory tract infection, wheezing
Misc: CHURG-STRAUSS SYNDROME, fever, HYPERSENSITIVITY REACTIONS (INCLUDING ANAPHYLAXIS AND LARYNGEAL EDEMA)
Drug-drug:
Aerosol for Oral Inhalation
Powder for Oral Inhalation
Lab Test Considerations: