What would you do if you bf for 3 years parents is addicted to pills?

i have been with my bf for 3 years and we live right beside his parents well to start things off the are addicted to pills. all diff kinds roxys hydros, opanias, speckled pups, morphene and they shoot all this up. They are in there 60 the mom had my bf when she was 30 something. well my bfs dad goes to this pain clinic and is getting 130 roxys and 60 opania's. I looked them up and it says your not even supposed to mix thos drugs. they shoot them up and totally loose there mind one night about 1am the mom was over druged and stood out back in underware asleep standing at the gate where the whole neighborhood could see her. plus on top of that there house payment bein 786 a month is now 3 months behind due to them buyin drugs. they got the roxy and opania on the 21 and is now out. what is stoping them from killing themselves i have no clue. the mom had o.d 4 time in 2 years. we need halp dont know what to do and the son has almost gave up he says that it has been like this as long as he can remember. no family comes over anymore due to what they do. HELP