Hi JonC, well we have found yet another Greek word (or family of words) that we fundamentally disagree as to their meaning. First, they always are used in light of God's condemnation, thus to claim a meaning of medication or usefulness is to ignore the obvious. So drug use for sinful purpose is indeed the meaning. Thus being addicted to drug use to satisfy the desires of the flesh is condemned in Galatians 5:20.