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Table 1 Characteristics for epinephrine auto-injectors available in Europe and North America

From: Do epinephrine auto-injectors have an unsuitable needle length in children and adolescents at risk for anaphylaxis from food allergy?

Epinephrine autoinjector (EAI) Epinephrine dose Needle length(mm) Pressure against the thigh
Exposed needle length Distance skin to muscle
Epipen Jr®, Auvi-Q®/Allerject® 0.15 mg 12.7 10.7 Thrust/Pressed firmly
Epipen®Auvi-Q®/Allerject® 0.3 mg 15.2 13.2
Jext® 0.15 mg 0.15 mg 15.7 13.7 Pressed firmly
Jext® 0.3 mg 0.3 mg 15.7 13.7
Emerade® 0.15 mg 0.15 mg 16 14 Slight pressure
Emerade® 0.3 mg 0.3 mg 23 21
Emerade® 0.5 mg 0.5 mg 23 21