Don't leave EpiPens in hot cars

Glove compartments are the hottest spot and adrenaline concentrations drop, study finds

The adrenaline in emergency allergy shots like the EpiPen can deteriorate when exposed to heat, so they shouldn't be left in the car on a hot day, researchers warn.

Lead author Piotr Lacwik, who works at the Medical University of Lodz in Poland, and his team purchased 12 EpiPen Senior injectors from the same lot to ensure consistency.

They then distributed nine EpiPens in the glove compartment, cabin shelf and boot of a car parked in a treeless area.

The remaining three were stored in a dark, air-conditioned room at a constant temperature.

After half a day, the researchers retrieved the EpiPens from the car and cooled them to room temperature before testing their contents.

They found that the concentration of adrenaline in the autoinjectors was reduced by 3.3% in the samples that had been placed in the boot, 13.3% in those in the cabin and 14.3% in those that had been left in the