I use EEN in Grapeseed Oil from Voix Celeste, link at the end, and have been wondering as the temperature climbed over 30° a lot in the last couple of days: Should I keep the vials cool? Currently I keep em in a Cupboard in the Bathroom, so that thry are sheltered from light and sunshine at all times. So here is my question: should I put em in the fridge or are they fine as they are in the cupboard.

The Vials in question: https://voixceleste.cc/p/estradiol-enanthate-in-grapeseed-50mg-ml/