[JoshTriplett]

Lots of things will kill you if you consume them or misuse them, yet you can buy them from many stores.

People should absolutely consult medical experts before using most medications. I will consistently say that that does not mean they should be restricted from purchasing arbitrary medications.

(Antibiotics are a potentially interesting case that may require some additional complexity, precisely because they're a commons, and taking them incorrectly or even taking them correctly can affect people other than yourself. That doesn't apply to anything that only affects yourself.)