Personally I wouldnt risk it. Im so paranoid i got new ATM cards and scrubbed my wallet clean of any specs before i flew. But thats illicit stuff.
For prescriptions, i would only in a proper container. I once got a bottle of xanax that wasn't from any pharmacy or script, so no white label, and the scary customs guy at Zurich gave me a shifty look. I then left them on the second plane later ffs. Anyways I wouldnt do that again either.
Oh, i even got shit for my two (1 as backup) athma pumps since apparently it contains steroids and is abused by athletes for performance enhancement, wtf. I promised i wasnt trying to smuggle the second on in for distribution so they let me go.