Most doctors don't prescribe placebos, and may not even be allowed to. Even though a placebo might very well work.
Placebos are ideal drugs in some cases. Effective, no side-effects...
not necessarily. It can be against another existing drug.
That were already proven to be stronger than placebo?
Usually we test against best current treatment and not just always against placebo. If something clearly improves outcomes for a patient, it's unethical to not give them a treatment so that you can test your new intervention against a placebo.
I meant if A>B and B>placebo, would that not imply A>placebo?