Its suppose to be ok at room temp for long periods of time so long as its suspended in aa or ba solution. We have an actual study posted in our peptide forum showing this, though i always keep mine in the fridge lol, just to be sure lmao, i will also say that many guys on here have used it after months while just kept in sock drawer or dark place and it was still 100% viable and more over its light that degrades IGF-1 lr3 the most, specificaly sunlight. So its important to keep it in dark place if your not keeping it in fridge