One in seven drug packages stored in physicians’ pharmaceutical sample closets is expired, and an estimated $2.2 billion worth of drug samples go to waste each year, a study says.

Researchers took inventories of the drug sample closets at 10 primary care clinics in the Phoenix metropolitan area. Of the 12,581 sample boxes or packages examined, 14% were expired, said the study, published in the May-June issue of the Journal of the American Board of Family Medicine.

My latest. Read the whole shebang.