It is my first time for this exam. I've heard it was very difficult and it lived up to its reputation. But knowing this, I've been studying even while on residency for the past 2-3 months.
I had one HIV question but it was more formulation justification regarding TDF vs TAF (tenofivir).
Some DDIs were simple, e.g linezolid an SSRI; however some were more difficult, e.g. "Select which you contact the prescriber to Change in a regimen for protonix (regimen: zofran, Reglan, Pepcid).
I did have some renal type questions but they were you must know which drugs need Renaly dosed.
I did have some old drug questions on things that were all over the place, i.e. From interferon to trospium.