I found this thread so I won't need to create a thread myself...
I too have this problem, I'm a jet head, a dead merchant left 14 pills and that was the end of me. When I got addicted I kept on taking and taking.
Now I realised my mistake, and my guy wants to become a goody good guy again.
Problem is those 2 guys are not selling the antidote, and my character can't do that antidote quest, science and intel are quite low.
So quick question, if I sleep for 2 weeks will the merchant definitely restock?