As someone who works in medical devices, there's huge sections of standards referring to confirming that software and devices reach the intended user untampered

As someone who works in medical devices, there's huge sections of standards referring to confirming that software and devices reach the intended user untampered and analysing the risk of selling to an untrained customers and things like that. The long and the short of it always boils down to, it's not worth the risk to sell to individuals. Because if something goes wrong and someone is injured or killed, the regulatory agencies are going to come down on you like a ton of bricks I would assume similar practices exist for pharmaceuticals.