The UK manufacturer of
mifepristone says that the
efficacy of
corticosteroids (including inhaled corticosteroids) is expected to be reduced in the 3 to 4 days following the use of
mifepristone.
Patients taking
corticosteroids should be monitored in the 3 to 4 days following the use of mifepristone, and consideration given to increasing the corticosteroid dose. The US manufacturer contraindicates the use of
mifepristone in those receiving long-term corticosteroid therapy.