I’m vaguely recalling – and therefore could obviously be wrong – that the FDA’s definition of “safe and effective” uses “effective” to mean as good as or better than whatever other drugs there are already approved to treat the same condition.
Is that true?
Specifically, I’m interested in
1) Effective means does what it says on the tin
or, to distinguish
2) Does what it says on the tin better than extant preparations
3) Does what it says on the tin as well as or better than current preparations.