A prescription label is not a timeless article. It is a document with an identity, a publication date and sections that can change.
The date belongs beside the answer.
When a label is revised, the newest text can replace what a reader saw before. A useful reference therefore needs more than a drug name and a paragraph: it needs the source document’s stable identifier, the date shown by the source and the date the copy was retrieved.
Without those fields, two conflicting answers can look equally current even when one was derived from an older version.
Changes should be public, not silently overwritten.
CareCanon maintains a dated change ledger by brand and section. The goal is not to interpret the medical importance of every revision. It is to make the document history inspectable and route readers back to the current source.
The same principle governs our price records: an amount without a capture date is advertising copy, not durable evidence.
The field glossary explains how CareCanon uses “Recent Major Changes,” revision month and mirror date.
Inspect the historyOpen the label-change record→