Atazanavir ve Siklesonid etkileşimi

Coadministration of fluticasone propionate and REYATAZ with ritonavir is not recommended unless the potential benefit to the patient outweighs the risk of systemic corticosteroid side effects [see Warnings and Precautions (5.1) ] .

Corticosteroids: dexamethasone and other corticosteroids (all routes of administration) ↓ atazanavir ↑ corticosteroids Coadministration with dexamethasone or other corticosteroids that induce CYP3A may result in loss of therapeutic effect of REYATAZ and development of resistance to atazanavir and/or ritonavir.

Alternative corticosteroids should be considered.

Coadministration with corticosteroids (all routes of administration) that are metabolized by CYP3A, particularly for long-term use, may increase the risk for development of systemic corticosteroid effects including Cushing’s syndrome and adrenal suppression.

Consider the potential benefit of treatment versus the risk of systemic corticosteroid effects.

In a drug interaction study, co-administration of orally inhaled ciclesonide and oral ketoconazole, a potent inhibitor of cytochrome P450 3A4, increased the exposure (AUC) of des-ciclesonide by approximately 3.6-fold at steady state, while levels of ciclesonide remained unchanged.