Amarin has announced news long awaited by investors -- a partnership with a big pharma. Although the pharma itself is not a household name, Japan's Kowa Pharmaceuticals will essentially triple the sales force for Vascepa. Sales of the high-triglyceride fighter, Amarin's sole approved product, have disappointed, and they appear headed nowhere close to Wall Street's initial peak sales estimates.

On this edition of Market Checkup, The Motley Fool's health care-focused investing show, analysts David Williamson and Michael Douglass discuss the new marketing deal, the challenges the companies will face (including a generic threat and competition from AstraZeneca), and whether this move will presage a turnaround in Amarin's stock.

David Williamson owns shares of Amarin. Michael Douglass and The Motley Fool have no position in any of the stocks mentioned. Try any of our Foolish newsletter services free for 30 days. We Fools don't 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.