How long a duration should each cycle of chemo be administered for breast cancer?

Each 2-3 weeks: For early stage breast cancer, chemotherapy is usually given once every 2 weeks (dose-dense) or once every 3 weeks for 4 cycles. This might be followed by a different type of chemotherapy that can be given every 1 week for 12 cycles, or every 2 or 3 weeks for 4 cycles.

Depends: This is best answered by your oncology team. The length of time depends on the specific drugs you are given.