Miracle Mouthwash Plus Hydrocortisone vs Prednisolone Mouth Rinse for Mouth Sores Caused by Everolimus

This is a randomized Phase 2 study to evaluate two different steroid-based mouth rinses (Miracle Mouth Wash plus hydrocortisone versus prednisolone oral rinse) for the prevention or treatment of everolimus-associated stomatitis (mouth sores) in postmenopausal patients undergoing treatment with an aromatase inhibitor plus everolimus. An exploratory analysis will also evaluate patient response to next anti-cancer therapy of physician\'s choice following discontinuation of therapy with an aromatase inhibitor plus everolimus.