A brand owner for Luxembourg brands usually shapes the supplement pack around where it sells first. The channel mix here spans pharmacie, grocery and a largely cross-border DTC channel, and that mix shapes both pack format and unit economics — so the lead channel a brand owner picks is a format decision as much as a commercial one. Because the working language is Luxembourgish, French and German, one artwork master can carry a tri-lingual panel across those channels rather than three separate runs. The cert panel commonly seen on a Luxembourg supplement pack — V-Label, the EU organic leaf — is settled before the format is locked. Weighing pharmacie against grocery against the DTC channel is therefore the first commercial choice a brand owner makes for the supplement format.