Well, the most well-known is coffee that has been "processed" in that way: https://en.wikipedia.org/wiki/Kopi_Luwak
But assuming you mean camel-dung: https://en.wikipedia.org/wiki/Coprophagia cites Lewin's "More on Merde": "... consumption of fresh, warm camel feces has been recommended by Bedouins as a remedy for bacterial dysentery; its efficacy (probably attributable to the antibiotic subtilisin from Bacillus subtilis) was anecdotally confirmed by German soldiers in Africa during World War II".