Djenkolic acid is a sulfur-containing non-protein amino acid naturally found in the djenkol beans of the Southeast Asian plant Archidendron jiringa. Djenkolic Acid often causes renal injury, including hypersensitivity to or a direct toxic effect of a djenkol bean metabolite, resulting in acute kidney injury and/or urinary tract obstruction by djenkolic acid crystals, sludge, and/or possible ureteral spasms.