Kebutuhan vitamin B1 pada manusia skitar 1-1,5 mg/3000 kal. Kekurangan vitamin B1 dapat menyebabkan beri-beri dan sindrom Wernicke-Korsakoff.
Makanan sumber
"Vitamin B1" dapat ditemukan diantaranya pada telur, biji-bijian, liver (hati), gandum, ragi dan kentang.
Referensi
^(Inggris) George J Siegel, Bernard W Agranoff, R Wayne Albers, Stephen K Fisher, dan Michael D Uhler. (1999). Basic Neurochemistry - Molecular, Cellular and Medical Aspects : Nutrition and Functional Neurochemistry. Edward Hines Jr Veterans Affairs Hospital, Loyola University Chicago Stritch School of Medicine, University of Michigan, National Institute of Neurological Disorders and Stroke, National Institutes of Health, Mental Health Research Institute (edisi ke-6). Lippincott-Raven. ISBN0-397-51820-X. Diakses tanggal 2010-07-19.Pemeliharaan CS1: Banyak nama: authors list (link)