After an incredible performance in late March, when shares of Acadia Pharmaceuticals (NASDAQ:ACAD) jumped up 23%, they have once again exploded today, up 40% intraday. What's behind these massive leaps for this pharmaceutical company, and is there more on the way? In this video, Motley Fool health-care analyst David Williamson tells investors about the drug that has Acadia investors so excited, why it has so many competitive advantages, and what investors need to watch from here.

David Williamson owns shares of Pfizer. 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.