Table 1: Features of some epinephrine auto-injectors
| Epipen | Jext | Auvi-Q/ Allerject | Emerade | |
| Available doses (mg) | 0.15/0.3 | 0.15/0.3 | 0.15/ 0.3 | 0.15/ 0.3/ 0.5 |
| Availability | Worldwide | Europe | USA/Canada | Europe |
| Exposed needle length (cm) | 1.3/1.50 | 1.53 | 1.27/1.57 | 1.6/2.5/2.5 |
| Shelf-life (months) | 12-18 | 24 | 12-18 | 30 |
| Needle protection | yes | yes | yes | yes |
| Injection time (seconds) | 10 | 10 | 5 | 5 |
| Special features | 1or 2-Pak | Audio cues | Needle length |