Source: Schema.org v30.1 vocabulary. Official warning property definition.
What does warning mean?
Any FDA or other warnings about the drug (text or URL).
Used on types (domainIncludes)
Expected value types (rangeIncludes)
Schema.org domainIncludes and rangeIncludes are descriptive guidance, not strict validation prohibitions. Check the official reference for updates.
Related reference
Browse all Schema.org types and properties · Google feature support status