Ortiz' statement seems to have been done in complete honesty.
And living here in D.R, you don't know how it works around here, for some kids, it's sign or live in poverty, so they'll take whatever their trainer gives them without asking, and a lot of them will juice unknowingly, since they'll be told that it's "injected vitamin B complex", and when you're nearly homeless, you'd take cocaine up the ass to make it up the states, so they'll just do as they're told, no questions asked, and it think that's what Ortiz was referring to.