Thanks for the correction. But, the principle is the same -- biologics are a continuing process, whereas it appears that Prurisol involves a course of treatment of finite length.

What I wonder is: if someone is being successfully treated with biologics, if they STOP taking them, does that trigger a bad attack of the disease? Wondering because if someone wants to try Prurisol, I would think that they would need to stop taking the biologic and let it clear from their system first.