It all boils down to two issues. One, humans are not rats, and two, despite our incredible similarities to one another, actually those tiny differences between you and I have huge impacts with how we metabolize drugs and how those drugs affect us.
Resúmese todo en dous temas: Un: os humanos non somos ratas, e dous: malia as nosas  incribles semellanzas, as pequenas diferenzas entre nós teñen un forte impacto no xeito en que metabolizamos fármacos e en como nos afectan os fármacos.