Daybreakers (2010) 'Blood Substitute' Clip

The year is 2019. A mysterious plague has swept over the earth, transforming the majority of the world's population into vampires. Humans are now an endangered, second-class species – forced into hiding as they are hunted and farmed for vampire consumption to the brink of extinction.

It’s all up to Edward Dalton, a vampire researcher who refuses to feed on human blood, to perfect a blood substitute that might sustain vampires and spare the few remaining humans.