Some years ago, I went to Boston Medical Group where I started with tri-mix. They supplied me with an auto-injector, which I found made injections far easier and reliable than trying to do it myself.    
   
 I've long since taken their prescription to my doctor and saved a bundle; I also took the auto-injector, but have now lost it on a trip.  
   
 Does anyone know if these are easily available and from where?  Do you need a prescription?  I did a quick internet search  for "auto injector" and came up empty.