CHICAGO — Drug channel retailers hold a lower than average share among younger baby boomers, likely due to a particularly low share across sizeable categories, such as vitamins and internal analgesics, within the younger boomer cohort, SymphonyIRI Group reported Thursday as part of its latest Times & Trends Report, "Baby Boomers: Riding the Wave of Diversity." In contrast, dollar channel spending among younger boomers is above average across each of these categories.