Is abiraterone safe? Abiraterone Price in Philippines may cause a condition that affects the heart rhythm (QT prolongation). QT prolongation can rarely cause serious (rarely fatal) fast/irregular heartbeat and other symptoms (such as severe dizziness, fainting) that need medical attention right away.What happens when abiraterone stops working? If hormone treatment stops working for prostate cancer, doctors may use alternative treatments such as chemotherapy, radiotherapy, and immunotherapy.  Most prostate cancers eventually become resistant to hormone therapy. Doctors may then use alternative treatments depending on the individual case.