Good advice, potatoboy99 - what the f' does this handle relate to? - I have carried all manner of questionable materials leveraging existing Rx bottles. E.g. bootleg ambien or zopiclone goes in a old ambien Rx bottle. IOP Rivotril goes in an old Ativan bottle. Dilute GBL went into a Listerine bottle, appropriately coloured with food dye, and OP Rx hydro went in the bottle from the OP. Put them all in a toiletry kit -- I'm an old fart, so I also had legit Lipitor and BP meds. Keeps quantity low - if you're only carrying 20-30 pills, Singapore or Taiwan will not be so inclined to hang you.
Going to europe, in 100+ trips, I've never been challenged in customs usually CDG or LHR. Frequently transfer baggage straight to connecting flight in Marseille or Barcelona, where they don't even have customs on duty late in evening when I arrive.