It required that active ingredients be placed on the label of a drug's packaging.

the packaging label

I believe so.

The packaging will most likely have a best-before date stamped on it.... possibly not in ink, but in indentations on the packaging.

If it is a prescription medication, the date the prescription was processed ought to be on the label.

process it to become a package or a label.

Can make process like cutting, half cutting, creasing folding line, drawing then assemble it to become a package or label.