It's better to practice what to do in an emergency situation with a trained professional. (health-and-parenting.com)
Emergency First Reponse (EFR) Course — Learn the basics about what to do in an emergency situation while professional help is on the way. (pelicanreefvillas.com)
Not to mention, breaking open a vial of medicine and drawing out the correct dosage isn't something most people want to be doing in an emergency situation. (health.com)