Libertarian philosophy as I understand it is about coercion.
No, libertarian philosophy talks a lot about coercion. The problem is that the word requires so much interpertation that it is meaningless..
Heck, let's use your example. First, your example presupposed that there is an objective, knowable standard for what a doctor should proscribe. And that somehow we can determine if something is "recklessly prescribing" or "prescribing ... after weighing the risks and benefits."
But secondly, a doctor prescribing something is seen as coercion, if and only if it was the wrong choice. If it was the right choice, no coercion. And it's only coercion if a judge tries to stop him from making a bad choice, not a good choice.
While I think "the decision most likely to be correct should be applied, regardless of source" is reasonable, I don't think it's what you intended.
I do agree with GP. These points are tired, and dragged out constantly. So I worry I'm wasting time shouting into the wind. But, I'll take that chance.