You touch on another way in which drug laws are positively evil - the only reason why Vicodin causes liver damage is because it is legally required to contain a

You touch on another way in which drug laws are positively evil - the only reason why Vicodin causes liver damage is because it is legally required to contain a large amount of acetaminophen. The express purpose of the acetaminophen is to permanently damage your liver if you are ever tempted to 'abuse' the Vicodin and exceed the approved dosage. Of course, with opioid tolerance there is no clear line between therapeutic and recreational dosages, and no way of setting an acetaminophen level that hurts one group of users but not the other, so in practice we have legally mandated poisoning of thousands of chronic pain sufferers.