Physical and Chemical Stability and Excipient Compatibility

[“Product and Process Design” discusses scientific and technical principles associated with pharmaceutical product development useful to practitioners in validation and compliance. We intend this column to be a useful resource for daily work applications. The primary objective for this feature: Useful information. Reader comments, questions, and suggestions are needed to help us fulfill our objective for this column. Please send your comments and suggestions to column coordinator Yihong Qiu at qiu.yihong@abbott.com or to coordinating editor Susan Haigney at shaigney@