Pharm is definitely the toughest class I've taken so far! Do you have Pharmacology for Nursing by Lehne? If so, that's a pretty good book. (I'm in MI, too!) Not sure if your Pharm class combines med math with it, but ours did. I'd highly recommend "Math Attack: Winning the Pharmacology Math Battle" by Karen Champion. It's terrific!
Pharm at our school is the first nursing course you take before being admitted to the program. They use it to weed out applicants. It's a TOUGH class and is run just like all the nursing courses. Lots of reading, lots of memorization, absolutely no rounding of grades, no extra credit, etc.
I would highly recommend making your own flashcards. Yes, you can purchase pre-paid flashcards, but I found that making them myself helped me memorize the material better. Also, if I tried to explain exactly how a drug worked out loud to myself or to another person, it helped me retain the information. I made a blank template and printed out a large stack and filled them in for my flash cards as I learned each drug prototype. It also helped to make a chart of similarities and difference in drugs when you get to drugs that affect the central nervous system (sympathetic vs. parasympathetic).
If your school offers supplemental instruction (or tutoring) for Pharm, I highly suggest going. It made the difference between getting a B and getting an A in the course for me. Our SI was terrific. He was a 2nd year nursing student and would give us great tips on memorizing the material.
Good luck to you!