Drugmaker VIVUS (NASDAQ:VVUS) reported its fourth-quarter earnings after the closing bell on Monday. Shares traded down 12% today; investors were clearly not impressed with the results.

Sales of the company's obesity drug Qsymia were the primary focus of the report, but what else should investors be paying attention to when they analyze VIVUS' quarter? In this video, health care analyst Max Macaluso discusses three essential topics that investors need to consider.

Max Macaluso, Ph.D. 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.