In your family, where do you put all the medicines?!
My husband said all the medicines should put in the bathroom cabinet which I don't agree, but how about you?!
Your hubby is wrong - and I'll take the heat for it when you tell him!
Medications, vitamins, and/or any other 'things' you put in your body should never be in a bathroom because of the humidity, as already mentioned. The ONLY exclusions are medications which have to be refrigerated ie insulin, pediatric antibiotics, etc. and they will be labeled by the pharmacy to store that way. You might be surprised, and alarmed, to learn the molecular changes caused by humidity in certain meds. They can be altered enough to cause huge problems with some. There is also a reason pill bottles and liquids come in/are dispensed in those amber colored containers vs a clear one. Light can also change them.
Get them out of the bathroom and into a safe place that is both dark and dry!