I did a rotation-long presentation on endocannabinoid antagonists once I had to present with a bunch of residents' projects. One of my preceptors told me it blew them out of the water content wise.
Look into it...tons of info...not many people know much about it...emerging therapy for diabetes...will really take off if they create one that doesn't cross the blood brain barrier. You can write a really good project if you did it right...
Plus metabolic pharmacology/biochemistry is the most interesting subject in the world of pharmacy...to me, anyway...but I'm a giant dork...