Government Centers??? Are you serious???? The lawsuits for overdoses by the family members alone would bankrupt your program. Or you could ration the amount of product that a user could get, but that would lead to "street drugs" to get around the government rations. Either way, Government Centers don't work!
As I noted, that was an ideal solution, but you could simply legalize it all and we’d be vastly better off than we are. I assume the reason that doesn’t happen is that there is too much money and too many yuppy careers tied up in drugs, the war on drugs, and the prison/industrial complex at this point.