Prior to Commencing Probenecid for Gout, It Is Important to Inform

Prior to commencing probenecid for gout, it is important to inform the person that:

A) probenecid is inactivated by pigments in red food colouring, so they must abstain from foods containing red dye three days prior to commencement of therapy and throughout the course of therapy.
B) probenecid is likely to cause constipation.
C) ceasing oral analgesics is the best way to gauge the effect of a course of probenecid.
D) probenecid is a preventative treatment so should not be commenced while they have acute symptoms of gout.