This is a disclosure finding, not a safety finding. "Natural flavor" is a legally defined labeling category under 21 CFR 101.22, not a single substance.
The regulation permits a manufacturer to declare a blend of many individual flavoring constituents collectively under this single term without naming the component substances on the label. A consumer therefore cannot determine from the label what specific substances are present. No claim of harm is made or implied: the components may be entirely benign, and it is not possible to evaluate them from public labeling precisely because they are not disclosed. Two exceptions exist where disclosure IS required: major allergens under FALCPA must be declared separately even when used within a flavor, and FDA guidance (2023) requires sesame to be named specifically.
naming the flavour profile ("orange") identifies what it tastes of, not what it is made from. The constituent substances remain undisclosed under the same regulation.