I'll share this funny story with you....

I had an intern once who wanted us to save the "do not eats" for his corvette when he put it in storage! Some logic missing on THAT ONE! LOL

I keep some "do not eats" with me upNorth on vacation. It is very humid up there on the lake sometimes. When the fog rolls in our mirrors inside go steamy even. No A/C or electricity up there!

But kept in a tight drawer, with protection, I've kept RX meds and some sensitive things safely even there!

I just cleaned out a drawer however with a large bottle of Arginine from NOW from last year, and it was all decomposed into a rock hard mess, of solid powder. That is the worst I've had go bad on me. Magnesium is the next most sensitive one after it is opened.. the "do not eats" don't seem to work after the seal is broken (this is for Mag64--generic for SlowMag).