Hi, I had this same problem when I took pharmacology calculations a year ago. I googled "latin medical abbreviations
" and many sites popped up. It made it so much easier to memorize the abbreviations when I understood what they meant.
For example, pc stands for "post cibum" which means "after meals"
gtt comes from "guttae" for "drops"
prn comes from "pro re nata" which means "when necessary"
They are actually fun once you understand them.
I hope that helped.