Understanding vitamin D formulationsDeDea, Larissa PharmD, BCPS, PA-CJournal of the American Academy of Physician Assistants: October 2013 - Volume 26 - Issue 10 - p 10–12 doi: 10.1097/01.JAA.0000435258.26357.4c Pharmacology Consult Abstract Author Information ABSTRACT Treating patients who are vitamin D deficient can be challenging. This article describes various formulations of vitamin D and their indications. Larissa DeDea is a clinical pharmacist with Northern Arizona Healthcare in Flagstaff. In addition to being board-certified in pharmacotherapy, she is a graduate of the Yale University PA program. © 2013 American Academy of Physician Assistants.