title: Acute renal failure in a young weight lifter taking multiple food supplements, including creatine monohydrate.
abstract: We report a case of a healthy 24-year-old man who presented with acute renal failure and proteinuria while taking creatine and multiple other supplements for bodybuilding purposes. A renal biopsy showed acute interstitial nephritis. The patient recovered completely after he stopped taking the supplements. Creatine is a performance-enhancing substance that has gained widespread popularity among professional as well as amateur athletes. It is legal and considered relatively safe. Recently there have been case reports of renal dysfunction, including acute interstitial nephritis, associated with its use. Further studies are needed to evaluate the safety of creatine supplementation. It may be prudent to include a warning of this possible side effect in the product insert.
authors.affiliation: Department of Internal Medicine, Mayo Clinic College of Medicine, Rochester, MN 55902, USA.
authors.forename: Bjorg
authors.initials: B
authors.lastname: Thorsteinsdottir
authors.forename: Joseph P
authors.initials: JP
authors.lastname: Grande
authors.forename: Vesna D
authors.initials: VD
authors.lastname: Garovic
mesh_terms: D015746:Abdominal Pain; D058186:Acute Kidney Injury / Q000175:diagnosis* / Q000209:etiology* / Q000473:pathology; D000328:Adult; D001706:Biopsy; D001806:Blood Urea Nitrogen; D002097:C-Reactive Protein / Q000032:analysis; D003401:Creatine / Q000009:adverse effects* / Q000097:blood / Q000652:urine; D019587:Dietary Supplements / Q000009:adverse effects*; D006801:Humans; D007668:Kidney / Q000473:pathology; D007678:Kidney Glomerulus / Q000648:ultrastructure; D007684:Kidney Tubules / Q000473:pathology; D008297:Male; D008657:Metabolic Clearance Rate; D009318:Natriuresis; D011141:Polyuria; D011507:Proteinuria
chemical_list: D002097:C-Reactive Protein; D003401:Creatine