The oral care category remains a wide-open source of revenue for drug stores. Overall sales of oral care products in drug stores rose by at least 2% in every subcategory tracked by IRI in multi-outletss for the 52-week period ended Nov. 29, 2015. Portable oral care, in particular, posted a 21% volume jump. Moreover, a recent report from Packaged Facts pegged the category as positioned for continued growth, with retail sales projected to approach $6 billion by 2017.