In this segment of the Motley Fool's Market Check-Up, Fool health-care analyst David Williamson takes investors through some of the biggest stories affecting Big Pharma, biotech stocks, and the health insurance industry today.

While both Gilead (NASDAQ:GILD) and AbbVie (NYSE:ABBV) have been achieving miraculous cure rates with their hepatitis C drugs in clinical trials, Gilead's regimen of one pill per day for eight weeks vs. AbbVie's six pills a day for 12 weeks could put AbbVie's treatment in a very tight spot in terms of competition. Gilead is also striving to be first of the two to market by accelerating its timeline to get an earlier approval. Could this spell a major derailment for AbbVie? David discusses the two treatments, and gives investors an outlook for just how bad for this might be AbbVie .

David Williamson owns shares of AbbVie. The Motley Fool recommends Gilead Sciences. Try any of our Foolish newsletter services free for 30 days. We Fools may not all hold the same opinions, but we all believe that considering a diverse range of insights makes us better investors. The Motley Fool has a disclosure policy.