Take ibuprofen, a common pain reliever people like to keep on hand. Costco's online price for 1,000 tablets has you paying $0.01 per pill for the Kirkland version, which is Costco's signature brand.

With the recent spike in Norovirus cases, a health expert has warned people not to use a certain common painkiller to treat the stomach bug.Between September 23 and October 6, NHS data shows cases are ...