[2] Urolithins are gut flora human metabolites of dietary ellagic acid derivatives.

[5] Maximilian Nierenstein prepared this substance from algarobilla, dividivi, oak bark, pomegranate, myrabolams, and valonea in 1905.

[11] The highest levels of ellagic acid are found in raw chestnuts, walnuts, pecans, cranberries, raspberries, strawberries, and grapes, as well as distilled beverages.

In the 21st century, numerous U.S.-based supplement companies received FDA warning letters for promoting ellagic acid with false anti-disease claims that violate the Federal Food, Drug, and Cosmetic Act.

[18] There is no scientific evidence to support the claims that ellagic acid can treat or prevent cancer.