I truly don't know the half-life of afinitor. Perhaps some of our medical professionals can help with that. Although there are cancer drugs that work best for particular types of cancer, their effectiveness is subjective for each person. I'm assuming that the patient was taken off of Afinitor, which usually happens because the cancer is in remission or because the cancer is not responding to the med. Once you quit taking any med, it does stay in your system for varying lengths of time. However, the concentration of the drug in your body does not remain high enough for therapeutic results. If you feel that the breast cancer has returned, a visit with the oncologist is certainly in order. Best wishes.
- Afinitor Information for Consumers
- Afinitor Information for Healthcare Professionals (includes dosage details)
- Side Effects of Afinitor (detailed)
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