RICHMOND, Va., (June 16, 2011) – According to new data published in Clinical Therapeutics, the way a medication is packaged can have a significant impact on whether patients take it as prescribed. The study showed that Shellpak® calendar blister packaging from MeadWestvaco Corp. (NYSE: MWV), a provider of pharmaceutical packaging solutions, was associated with improvement in prescription adherence behavior in patients when compared with traditional pill vials.