I have tested many medicines over the years.
And it is absolutely not dangerous.
People only get to try it when it's been proven safe many times over, by simulations, animal testing etc. etc.
And prisoners are terrible for testing.
You need to be willing to commit to an extremely strict schedule that dictates your every minute of time for many days, sometimes weeks. When you eat and sleep etc. how much you eat and drink, everything is set ahead of time and you are basically drilled just as if in an Army bootcamp...
If they ain't willing to commit the side effects will not be known correctly.
Because honesty about how you are feeling is the deciding factor that gets "diarrhea" or "nausia" on that all important list of possible side effects.
In short; very bad idea. And legally impossible of course.