The active component of FLOVENT HFA 44 mcg Inhalation Aerosol, FLOVENT HFA 110 mcg Inhalation Aerosol, and FLOVENT HFA 220 mcg Inhalation Aerosol is fluticasone propionate, a corticosteroid having the chemical name S-(fluoromethyl) 6?,9-difluoro-11?,17 dihydroxy-16?-methyl-3-oxoandrosta-1,4-diene-17?-carbothioate, 17-propionate and the following chemical structure:

The active component of FLOVENT DISKUS (fluticasone propionate) 50 mcg, FLOVENT DISKUS 100 mcg, and FLOVENT DISKUS 250 mcg is fluticasone propionate, a corticosteroid having the chemical name S-(fluoromethyl) 6?,9-difluoro-11?,17-dihydroxy-16?-methyl-3-oxoandrosta-1,4-diene-17?-carbothioate, 17-propionate and the following chemical structure:

The active component of FLOVENT (fluticasone propionate) 44 mcg Inhalation Aerosol, FLOVENT (fluticasone propionate) 110 mcg Inhalation Aerosol, and FLOVENT 220 mcg Inhalation Aerosol is fluticasone propionate, a glucocorticoid having the chemical name S-(fluoromethyl)6a,9-difluoro-11b,17-dihydroxy-16a-methyl-3-oxoandrosta-1,4-diene-17b-carbothioate, 17-propionate and the following chemical structure: