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Both drugs are taxanes (so is Abraxane) and are based on the same chemistry and work in the same way. They stop cancer growth by interferring with what are called telomeres. Telomeres are the structure in a cell that helps the "almost ready to divide" cells to pull apart. Taxanes interfer with this action so the cells can't pull apart and then they die.
I think if you progressed on Taxol, you could try Taxotere (its "supposed" to be better) but I would try something else in between and then try it as it is in the same drug class and type. It's kind of like if you had an infection and pencillin didn't work and so they try amoxillin (which is a modified form of pencillin). I think you understand what I mean.
Also, ask your oncologist why they want to try Taxotere right after trying Taxol (of which you progressed on). The onc may have a thought process going on that you need to be privy about.
Kindest regards
Becky
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