You’ve heard of the little blue pill . Now, a new documentary is turning the spotlight on the pink one. Men have had pharmaceutical options for erectile dysfunction for decades — Viagra and Cialis are just a few. But a female libido pill has been more elusive. Enter Addyi . While drugs like Viagra work by increasing blood flow to the genitals, the daily pink pill focuses on brain-based approaches to treat hypoactive sexual desire disorder . HSDD is characterized by low or no sex drive for at