Does lifetime dose of doxorubicin expire?

Yes, the lifetime dose of doxorubicin does have a limit, as it is associated with the risk of cumulative cardiotoxicity. Oncologists typically monitor the total lifetime exposure to doxorubicin, usually capping it at around 450-550 mg/m², depending on individual patient factors and concurrent treatments. Once this limit is reached, further administration can lead to significant heart damage. Therefore, careful management and assessment are crucial in chemotherapy regimens involving doxorubicin.