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Ingredient library

Worth knowing · Herbal supplement

Usnea

Also appears on labels as: usnea thallus (usnea spp.), usnea

A lichen, dried and ground. Its main compound is usnic acid.

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Where it comes from
Wild-harvested from trees.
Why it's in the product
Herbal blends in supplements.
Safety and toxicity
Usnic acid has damaged the liver in people who took it in supplements.

General reference, not veterinary advice. Dose, breed, and existing conditions change the answer, so talk to your vet before changing what your pet eats. Think we got this wrong? Tell us and we log it publicly.

Found in 1 scored product

We flag it by name on 1 of them. Lowest scores first.