Arent you surprised nobody yet can tell what PED Pacquaio is taking

I mean with all the experts, scientists, nutritionists, doctors in the world, how come nobody has come forward yet and say what pacquiao is taking. Surely whatever PED he is taking, someone before him has used it before, otherwise that would mean the Ariza is a "genius" and created a new undetectable PED by his own which i highly doubt. I mean common now they keep saying he is on PED, tell us what it is