Make a type of drug which makes your person slowly re-generate hp and re-generates depending on the amount taken. There should be several different types of drugs which have different effects on the person.
And also make it so that people can store drugs in their own places. In the meantime, if your person gets jailed, you loses all the drug possession. Also people who get killed will drop the drugs down, and they stay on the ground for a certain amount of time before they disappear. If the cops pick up the dropped drugs, they can take them to the Arpd hq and get money for quarantining the drugs.
There's a problem with the slow motion thingy. It may desync you as you are running at a different time interval as the other players.