So, again, coming at this from a diabetic perspective, ya might try researching around or talking to people from other countries about this.
I had heard similar for insulin in the US. If its unrefrigerated, it will most likely go bad after about a month, but I had heard in the UK and some of europe, their guidance says 60 days.
The other thing is: thats for unrefrigerated. I'm not sure what ya'll are taking and if it has to be kept refrigerated or not like insulin does, but for insulin, if its kept refrigerated, even as you're using the vial, it will last muuuuch longer in the fridge, like years.
Take all of this with a grain of salt because if I have a bad vial of insulin, I can tell immediately with diabetes as my blood sugar will start to sky rocket, and I can correct it with other insulin I've stockpiled.
If your medication starts to go bad and you use it, I'm not sure how that manifests and how harmful that will be to your goals with going trans.