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hasAdultConsideration

A Schema.org Property

This term is proposed for full integration into Schema.org, pending implementation feedback and adoption from applications and websites.
Used to tag an item to be intended or suitable for consumption or use by adults only.
Values expected to be one of these types
AdultOrientedEnumeration
Used on these types
Offer
Product

Source

https://github.com/schemaorg/schemaorg/issues/2989