One view is that If B were working, the focus of the article would not be on his desire to use I. On the other hand, it is not clear from the article if or when B was administered. Perhaps there will be a follow-up article that B saved the day. At this point, the husband most likely wants to try anything as the situation appears desperate. The point in referencing B was that one non FDA approved drug is allowed for compassionate use while another is not.