Recall that heroin is one type of opioid. There is currently a huge amount of concern about spikes in overdose deaths from heroin that is mixed with fentanyla very dangerous drug that can kill users even in very small amounts. Suppose that in response, governments crack down on fentanyl suppliers in a way that permanently increases their production costs. This policy shift will help reduce social harm in the entire opioid market and get society closer to the efficient amount of opioid consumption. 2 Short Answers