Daily Requirements
Males
1 to 3 years 0.5 mg per day
4 to 8 years 0.6 mg per day
9 to 13 years 0.9 mg per day
14+ years 1.2 mg per day
1 to 3 years 0.5 mg per day
4 to 8 years 0.6 mg per day
9 to 13 years 0.9 mg per day
14 to 18 years 1.0 mg per day
19+ years 1.1 mg per day
Thiamine is found in legumes, fish, lean meats, whole grains and fortified breads and cereals. Deficiency may occur in people who consume large amounts of alcohol.
An extreme thiamine deficiency may result in a brain disorder called Wernicke-Korsakoff syndrome. Thiamine supplementation is safe, thought it is probably not needed for people who eat a healthy, balanced diet.
Sources:
Medline Plus. "Thiamine." http://www.nlm.nih.gov/medlineplus/ency/article/002401.htm."
Food and Nutrition Board Institute of Medicine. "Dietary Reference Intakes." http://www.iom.edu/Object.File/Master/21/372/0.pdf.

