Gilead Sciences (GILD) is a California-based pharmaceutical company. Its product line includes the hepatitis C drug Sovaldi, which was introduced in Dec. and has a better cure rate than the competition. This week Gilead was featured in IBD’S Sector Leaders Review which mentioned that the company has a lot going for it, but that its hepatitis C drug may soon face competition from companies like Merck (MRK)and Johnson & Johnson (JNJ) .