Vitamin B1, also called thiamine, is one of eight water-soluble B vitamins. Since these vitamins are soluble in water they are dispersed throughout the body dissolved in fluid. They are not stored in the body to any appreciable extent and must be replenished every day. Their influence on the body lasts for 14-18 hours after ingestion after which their potency decreases. An excessive intake of water-soluble vitamins is typically passed out through the urine. If the diet contains less than 50% RDA of water-soluble vitamins, symptoms from deficiencies may be displayed in as little as 4 weeks; much quicker than for fat-soluble vitamins.

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.

Thiamine RDA

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.

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Different forms or alternative names:
thiamin
thiamine chloride

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.

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Thiamine in foods - by food category

Thiamine 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,

Thiamine and Nutrition Facts - Top 199 Foods

Fruits

a banana, an apple, an orange, a peach, apricots, butternut squash, lemon, grapes, watermelon, strawberries, green grapes, kiwi, blueberries, zucchini, figs, honeydew, eggplant, dates, olives, a pear, coconut, cranberries, pomegranate, a mango, pineapple, cherries, cantaloupe, grapefruit, tangerine, nectarines, raisins, plums, tomatoes, chili peppers, chilis, peppers, avocado, cucumber, summer squash, winter squash, papaya, prunes

Vegetables

leeks, turnip greens, swiss chard, mustard greens, yams, fennel, artichokes, broccoli, cauliflower, kale, green beans, brussel sprouts, cabbage, sweet potato, a potato, carrots, lettuce, iceberg lettuce, spinach, shiitake mushrooms, celery, salad, mushrooms, potatoes, baked potato, onions, asparagus

Seafood

salmon, cod, sardines, shrimp, tuna, fish, tuna salad, halibut, sea bass, scallops

Drinks

coffee, apple juice, cranberry juice, red wine, skim milk, white wine, wine, milk, beer, alcohol, coke, soy milk, whole milk, prune juice, tea, a shake, coconut milk, orange juice

Nuts and Seeds

chia seeds, sunflower seeds, pecans, pumpkin seeds, hazelnuts, nuts, almonds, sesame seeds, walnuts, cashews, peanuts

Beans and Lentils

soybeans, pinto beans, kidney beans, lentils, black beans, lima beans, navy beans, beets, beans, garbanzo beans

Meat

beef, steak, deer, bacon, chicken, fried chicken, turkey, turkey breast, chicken breast, meatloaf, ham, lamb, sausages

Fast Foods

french fries, pizza, a slice of pizza, hot dog, hamburger, a cheeseburger, a big mac

Dairy and Cheese

ricotta, yogurt, cottage cheese, an egg, egg whites, goats cheese, cheddar, cheddar cheese, cheese, hard boiled egg, feta cheese

Bread, Rice, Grains and Pasta

rye, millet, flaxseed, barley, buckwheat, whole wheat bread, a bagel, white bread, bread, quinoa, corn, spaghetti, rice, pasta, brown rice, white rice

Spreads, Sauces and Herbs

hummus, mayonnaise, butter, peanut butter, soy sauce, thyme, basil, rosemary, pepper, coriander, dill, parsley

Sweets, Desserts and Snacks

popcorn, chips, nachos, a granola bar, saltine crackers, cheesecake, jello, ice cream, doughnuts, chocolate

Breakfast Cereal

granola, cheerios, oatmeal

Miscellaneous

spirulina, honey, sugar, brown sugar, tofu, olive oil, garlic, tempeh, oats

Deficiency may cause:
loss of appetite
loss of weight
weakness and feeling tired
paralysis and nervous irritability
insomnia
vague aches and pains
mental depression and constipation
heart and gastrointestinal problems
Beriberi (vitamin B1 deficiency disease)


Nutrition Facts

calories, fat, carbohydrate, high protein foods, high fiber foods, low carb foods, calcium, iron, magnesium, chromium, phosphorus, chloride, potassium, sodium, fluoride, iodine, zinc, copper, manganese, selenium, vitamins and minerals, vitamin A, vitamin E, vitamin D, vitamin C, vitamin B1 (thiamin), vitamin B2 (riboflavin), vitamin B3 (niacin), vitamin B5 (pantothenic acid), vitamin B6, biotin (vitamin B7), Folic Acid (vitamin B9), vitamin B12, vitamin B13, vitamin B15, vitamin B17, vitamin K, folic acid, tryptophan, threonine, isoleucine, leucine, lysine, methionine, cysteine, phenylalanine, tyrosine, valine, arginine, histidine, alanine, aspartic acid, glutamic acid, glycine, proline, serine, cholesterol, essential fatty acids, trans fat, saturated fat, recommended daily allowance