Pfizer Canada, distributor of the EpiPen and EpiPen Jr autoinjectors, has issued a warning about the correct way to remove the blue safety cap on the devices.
"It has recently come to our attention that removal of the blue safety cap the wrong way by pulling it sideways or bending and twisting it off may prevent the device from working properly and potentially result in failure to deliver the drug," the company said in a release Thursday.
http://www.cbc.ca/news/health/story/2011/12/23/epipen-food-allergy-ana.html