All B vitamins, often referred to as B complex vitamins, assist and regulate carbohydrate, fat and protein metabolism. These are essential mechanisms which produce energy for the body. They also contribute to hemoglobin synthesis and red blood cell production which carries oxygen around the body. Furthermore, B complex vitamins help maintain muscle tone along the wall of the digestive tract and promote healthy skin, hair, eyes, mouth, liver and nervous system.
It is essential for the normal functioning of the nervous system, muscles and heart. It also stabilizes the appetite and promotes growth along with good muscle tone. Similar to some other B complex vitamins, thiamine is somemtimes referred to as an "anti-stress" vitamin because it is thought to enhance the activity of the immune system and improve the body's ability to withstand stressful conditions.
children 1-3 yrs 0.5 mg
children 4-8 yrs 0.6 mg
children 9-13 yrs 0.9 mg
Males 14-70+ yrs 1.2 mg
Females 14-70+ yrs 1.1 mg
Pregnancy 19-50 yrs 1.4 mg
Lactation 19-50 yrs 1.4 mg
For further information on nutrients RDA see our complete list for recommended dietary allowance.
Different forms or alternative names:
Importance of Vitamin B1 (Thiamin):
key role in metabolism of carbohydrates, fat and protein
assists production of energy within the body
essential for normal function of muscles, heart and nervous system
stabilizes the appetite
promotes growth and good muscle tone
Good sources are:
beef kidney, liver, brown rice, whole grains (especially wheat germ),
We have sorted our nutrition database by Foods high in Thiamine so you can easily see how much Vitamin B1 (Thiamin) is contained in different foods. You can also search through our database using the search box below or browse the Vitamin B1 (Thiamin) content by food category.
Thiamine in foods - by food categoryThiamine in Baby Foods, Thiamine in Baked Products, Thiamine in Beef Products, Thiamine in Breakfast Cereals, Thiamine in Cereal Grains and Pasta, Thiamine in Dairy and Egg Products, thiamine in drinks, Thiamine in Ethnic Foods, Thiamine in Fast Foods, Thiamine in Fats and Oils, thiamine in fish, thiamine in fruits, Thiamine in Lamb, Veal, and Game Products, Thiamine in Legumes and Legume Products, Thiamine in Meals, Entrees, and Sidedishes, thiamine in nuts, thiamine in pork, Thiamine in Poultry Products, Thiamine in Sausages and Luncheon Meats, thiamine in snacks, Thiamine in Soups, Sauces, and Gravies, Thiamine in Spices and Herbs, thiamine in sweets, thiamine in vegetables,
Deficiency may cause:
loss of appetite
loss of weight
weakness and feeling tired
paralysis and nervous irritability
vague aches and pains
mental depression and constipation
heart and gastrointestinal problems
Beriberi (vitamin B1 deficiency disease)