This article explains that the nutritional value of Vitamin pills can rapidly fade if stored in kitchens and bathrooms. It left me wondering if other medicines may be affected,
All medications should be stored at temperatures of less than 25 deg. C . Some medications require to be in the fridge. It's always worth reading the labels to check storage instructions.
I do store my vits in the kitchen, but I am aware that they do degrade once they have been opened. I take a high strength cod liver oil, and I was told that once you unscrew the top of the bottle, the oil starts to deteriorate, so for this reason I buy the smaller bottles, more expensive way of doing it, but I wish to reap the full benefits of the oil.