The movie is about a playboy who gets 'a taste of his own medicine' when the girl he falls in love with jilts him for another guy.
If he loses the case, he should just 'take his medicine' and stop complaining.
Their research has led to many important advances in modern 'medicine'.
(..) LARA LEE: Uh, Calvin, I just got her all dressed up and looking nice. – But… Lara Lee, Dr. Schultz is from Dusseldorf,they don't got niggers there. He's a man of medicine. I'm sure it would fascinate him, the niggers endurance for pain. These niggers are tough Dr. Schultz, no doubt about it. (..)2012 Django Unchained