From the smallest biotech to the biggest pharmaceutical stock, The Motley Fool's Market Checkup covers the health-care sector's biggest headlines, hottest market movers, and Obamacare's ongoing rollout.

In this segment from Thursday's episode, health-care analyst David Williamson takes a look at the third-quarter earnings report from Vivus (NASDAQ:VVUS). Shares fell more than 12% on the news that the company's revenue from its drug Qsymia was nowhere near what investors were hoping for. While the company showed 35% quarter-to-quarter growth, this, too, fell drastically short of the exponential growth investors were hoping for from a pharmaceutical company with a potentially blockbuster new drug rollout. David looks closely into Vivus' prospects, and lists a few other headwinds investors should be aware of.

Follow David on Twitter: @MotleyDavid.

Alison Southwick has no position in any stocks mentioned. David Williamson has no position in any stocks mentioned. The Motley Fool has no position in any of the stocks mentioned. 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.