Just like the protagonist in "Fortunately, Unfortunately" Gilead Sciences (NASDAQ:GILD) is experiencing a disproportionate amount of highs and lows.

Fortunately, the big biotech released great phase 3 data out of Japan for an experimental hepatitis-c combo treatment of the approved Sovaldi and ledipasvir which saw 100% cure rates.

Unfortunately, the cost of the hep-C cure has created a intense backlash which has spread to the UK. Their health agency, NICE, said Sovaldi's $59,000 price tag, $25,000 less than we pay in the U.S., was likely still too high for the government to pay for in all but the most severe cases. 

In this episode of market checkup, the Motley Fool's health care focused investing show, analysts David Williamson and Michael Douglass discuss the highs and lows of Gilead's week and the important takeaways for investors.