Tag Archives: anapen

Length of EpiPen, Jext and Anapen needles

I know I may seem to go on and on about adrenaline auto-injectors, BUT they really worry  me.  These are life saving products and it is important that they work when they are used for whatever allergic reaction may happen.

So my interest in this article concerns needle length.

It is really important that the needle injects its life saving drug into the muscle of the thigh and a study in 2009 indicated that in fact a significant proportion of children did not have a long enough needle to reach the muscle the skin and fat.  The same is undoubtedly true of adults because we all have different size thighs and yet the manufacturers of the auto-injectors provide a “one size needle fits all” solution to patients.  Surely at the very least the length of the needle should fit the needs of the patient?

So if you have a large child or are a larger than normal adult and require an emergency adrenaline injector, such as an EpiPen, Jext, or Anapen, then please talk to your doctor and let us start putting some pressure on the manufacturers to provide the right solution for all patients and not just for some.

In short not only do we need different size of dosages but we also need different size needles, an option that is currently not available.

Article by David I Glaser


Heat and Cold – complications of storage of EpiPens, Jext and Anapen injectors

I am getting an increasing number of worried enquiries about how best to store adrenaline injectors in warm or cold climates.  Does heat and cold make our Epipens, Jext and Anapen injectors inactive and potentially life threatening?

The manufacturers do have guidelines but they are fairly useless for the real world.

EpiPen say “You should take your EpiPen Auto-Injector everywhere you go, but it should be kept at room temperature (25°C, 77°F) until the marked expiration date, when it should be replaced” .  Just  how is someone meant to keep their EpiPens at this precise temperature and surely a range of temperatures would be more helpful.  In their advice to professionals (not patients) it says:

“EpiPen and EpiPen Jr Auto-Injectors should be stored in the carrier tube provided at a temperature of 25ºC (77ºF); however, temperature excursions between 15ºC and 30ºC (59ºF to 86ºF) are permitted.”

Just what is a temperature “excursion” and how long does an excursion last?  Suppose the safe temperature is exceeded?  Are patients never allowed to go to the beach or play in the snow and just how are patients expected to maintain this temperature range?

Finally, why is the advice to professionals different to advice to patients?

David I Glaser