Epi-Pen but not for each family member, especially if you don't know whether or not you're allergic. If you're going to go to that extreme you may as well have an allergy test done on each family member to see whether or not they're allergic. Using an Epi-pen simply because you got stung and it burns will cause more harm then good, the only time you should use an Epi-pen is if you're going to anaphylactic shock.