I'm going to take a wild guess and say....no.
Milos could probably get plenty of people from his gym (doctors and patients with scripts) to get him what he needs/wants.
Then there is his family connection, with a majority of his family being doctors. I'm sure they could get him his "stash" on a regular basis...and in a "fairly legal" manner.
Why would Milos need Hide to be his mule if the above is possible and/or true?
I'm guessing Hide brought some of his own supply with him and possibly he was going to do a bit of distribution himself?
Nobody knows any of the stone cold facts of the case yet, so anything that is said is pure speculation.