As an alchemist theres some things that are impossible to find adventuring and you need to rely on the stores, yet they dont seem to restock. I've waited like 5 days now for the alchemy shop in Whiterun to restock and nothing.

Stores should restock every second day, at least that's what it says in the game settings. But if it still works like in Oblivion the timer will be reset each time you enter the store. So make sure you do not enter the alchemy shop for at least two full days. If you do that the shop should have new items.

There's already a mod that does this =P http://www.skyrimnexus.com/downloads/file.php?id=749

Actually due to a possible bug, stores seem to reset that I've seen if you just save, exit the game and go back into it, if they were set up to reset at all. This includes the merchant's gold. Specific stores may vary of course.

You know what, I just said screw it and used the console command to give me what I needed.