Dexrazoxane 250mg and 500 mg vial for injection.

The way in which dexrazoxane protects the heart is not entirely clear, but may be linked to the way the medicine attaches to charged iron particles that are involved in the processes that make anthracyclines harmful to the heart muscle.

Dexrazoxane is a medicine used in adults with breast cancer to prevent long-term harmful effects on the heart caused by treatment with the anthracycline cancer medicines doxorubicin and epirubicin.