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Nomination Summary for Usnic acid & usnea barbata herb (N20513)

Nominated Substances: Usnic acid

Nomination Date: 01/27/2005

Nominator: FDA

Rationale: Widely used in dietary supplement and personal care products; lack of adequate toxicological data; numerous human adverse event reports

NTP Principles: 5, 6, 8

Agents and Status

The following information relates to the specific agent and may include history from earlier or later nominations for this same agent.

CASRN: 125-46-2

Agent Name: Usnic acid