5 reasons why no one has built a better EpiPen
EpiPen auto-injection epinephrine pens manufactured by Mylan NV pharmaceutical company for use by severe allergy sufferers are seen in Washington, U.S., August 24, 2016. REUTERS/Jim Bourg

Boston mom Denise Clark has been buying EpiPens annually for the past 16 years, ever since her son was diagnosed with a serious peanut allergy. Problem is, he won't carry his EpiPen around with him - because it won't fit into his pocket. "It's large and it's impractical," Clark said. "Where's he going to put it?"…