For many years, Epi-Pen was the only epinephrine auto-injector available on the market. A few years ago, Twin-Ject became available, and touted having 2 doses in the same injector device, in case anaphylaxis was severe, ongoing and required a second dose of epinephrine. Now, a new type of epinephrine auto-injector is available, called Auvi-Q. Auvi-Q is a compact sized device that has voice prompts to talk you through the process of administering the epinephrine to yourself. This would presumably cut down on the errors that people make with the Epi-Pen device -- such as injecting their finger -- as a result of mishandling the device. Whether you like the new Auvi-Q, the older Epi-Pen, or the Twin-Ject device, it's certainly nice to have choices when it comes to an epinephrine auto-injector.