I second the Lange Pharm cards, I loved them because each drug had an associated clinical vignette, which really helps with recall. Step1 emphasizes mostly mechanisms, toxicity, and adverse effects which are all covered accurately in the 189 card set. Used this as a supplement with FA and Uworld, more than enough for the real deal. Good luck!
I just got these on recommendation from the 2012 FA (although they rated the 2008 version and I have the 2011 version which I just noticed). It says in the beginning of the deck what to focus on for Step 1 and what's more Step 2 style so it is differentiated. I was studying GI, and the 18 questions they have for that were good. Has all the main stuff like mechanism, indication, notable side effects/toxicities.
Pharm's not my best subject (the reason I got these), but to me it seemed like there was a bit too much detail on like mechanism and stuff. Then again, the minutia of pharm is what makes me hate it so much, so we may need to know that level of detail anyway.