Hi Extraspace l am fairly new to EPI and on CREON 25000. It certainly does degrade above 25 deg C which is easy to reach in a car on a summer day. I keep a small reserve supply opin Myra deep in the boot inside a stainless steel stubby shaped vacuum flask which I hope even out temperature fluctuations. During summer months I carry my CREON in a Fryo evaporative cooling pouch intended for glaucoma medicines. You can get little compartmented boxes designed for CREON capsules from the manufacturer.
Do not keep capsules in your trouser pockets, this is the advice on the leaflet with the CREON.
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