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Thiamin – Consumer

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This is a reader-pleasant overview of Thiamin. For far more specifics, see our wellness expert simple fact sheet on Thiamin.

What is thiamin and what does it do?

Thiamin (also referred to as vitamin B1) helps change the food stuff you eat into the electrical power you need. Thiamin is critical for the development, growth, and operate of the cells in your entire body.

How substantially thiamin do I need?

The total of thiamin you need depends on your age and sex. Normal day by day advisable quantities are outlined beneath in milligrams (mg).

Existence Phase Advised Quantity
Birth to six months .two mg
Infants 7–12 months .3 mg
Little ones 1–3 years .5 mg
Little ones 4–8 years .six mg
Little ones 9–13 years .9 mg
Teen boys 14–18 years one.two mg
Teen ladies 14–18 years one. mg
Gentlemen one.two mg
Gals mg
Expecting teenagers and females one.four mg
Breastfeeding teenagers and females one.four mg

What foods deliver thiamin?

Thiamin is identified in a natural way in numerous foods and is included to some fortified foods. You can get advisable quantities of thiamin by ingesting a variety of foods, which includes the next:

  • Total grains and fortified bread, cereal, pasta, and rice
  • Meat (particularly pork) and fish
  • Legumes (this sort of as black beans and soybeans), seeds, and nuts

What kinds of thiamin dietary health supplements are accessible?

Thiamin is identified in multivitamin/multimineral health supplements, in B-intricate dietary health supplements, and in health supplements made up of only thiamin. Prevalent forms of thiamin in dietary health supplements are thiamin mononitrate and thiamin hydrochloride. Some health supplements use a synthetic type of thiamin referred to as benfotiamine.

Am I having ample thiamin?

Most individuals in the United States get ample thiamin from the foods they eat. Thiamin deficiency is unusual in this state. Nonetheless, specific teams of individuals are far more likely than some others to have difficulties having ample thiamin:

Chat with your health care company(s) about thiamin and other dietary health supplements to assistance you identify which, if any, may possibly be precious for you.

What happens if I never get ample thiamin?

You can produce thiamin deficiency if you really do not get ample thiamin in the foods you eat or if your entire body removes much too substantially or absorbs much too small thiamin.

Thiamin deficiency can induce reduction of fat and hunger, confusion, memory reduction, muscle weak spot, and heart complications. Severe thiamin deficiency prospects to a disease referred to as beriberi with the included indications of tingling and numbness in the feet and palms, reduction of muscle, and poor reflexes. Beriberi is not frequent in the United States and other made nations around the world.

A far more frequent example of thiamin deficiency in the United States is Wernicke-Korsakoff syndrome, which largely affects individuals with alcoholism. It triggers tingling and numbness in the palms and feet, critical memory reduction, disorientation, and confusion.

What are some effects of thiamin on wellness?

Experts are researching thiamin to improved comprehend how it affects wellness. In this article are some illustrations of what this investigation has shown.

Diabetic issues

Persons with diabetic issues normally have lower amounts of thiamin in their blood. Experts are researching whether or not thiamin health supplements can improve blood sugar amounts and glucose tolerance in individuals with style two diabetic issues. They are also researching whether or not benfotiamine (a synthetic type of thiamin) health supplements can assistance with nerve problems brought about by diabetic issues.

Coronary heart failure

Many individuals with heart failure have lower amounts of thiamin. Experts are researching whether or not thiamin health supplements may possibly assistance individuals with heart failure.

Alzheimer’s disease

Experts are researching the possibility that thiamin deficiency could influence the dementia of Alzheimer’s disease. No matter if thiamin health supplements may well assistance mental operate in individuals with Alzheimer’s disease requires further more review.

Can thiamin be damaging?

Thiamin has not been shown to induce any harm.

Does thiamin interact with medications or other dietary health supplements?

Yes. Some medications can lessen thiamin amounts in the entire body. In this article are a pair illustrations:

  • Furosemide (Lasix®), which is made use of to handle large blood stress and inflammation brought about by extra fluid in the entire body
  • Fluorouracil (5-fluorouracil and Adrucil®), which is made use of in chemotherapy treatment plans for some sorts of most cancers

Convey to your health practitioner, pharmacist, and other health care vendors about any dietary health supplements and prescription or over-the-counter medications you choose. They can convey to you if the dietary health supplements may possibly interact with your medications or if the medications may possibly interfere with how your entire body absorbs, works by using, or breaks down nutrition this sort of as thiamin.

Thiamin and healthful ingesting

Persons really should get most of their nutrition from food stuff and drinks, according to the federal government’s Dietary Suggestions for Us residents. Meals include natural vitamins, minerals, dietary fiber, and other components that profit wellness. In some circumstances, fortified foods and dietary health supplements are helpful when it is not achievable to satisfy requires for a person or far more nutrition (e.g., all through specific lifestyle phases this sort of as being pregnant). For far more info about setting up a wholesome dietary sample, see the Dietary Suggestions for Us residentsexternal link disclaimer and the U.S. Department of Agriculture’s MyPlate.external link disclaimer

The place can I find out far more about thiamin?

  • For general info on thiamin:
  • For far more info on food stuff sources of thiamin:
  • For far more advice on deciding upon dietary health supplements:
  • For info about setting up a wholesome dietary sample:


This simple fact sheet by the Business office of Dietary Dietary supplements (ODS) gives info that really should not choose the put of health care advice. We stimulate you to converse to your health care vendors (health practitioner, registered dietitian, pharmacist, and many others.) about your desire in, concerns about, or use of dietary health supplements and what may well be ideal for your overall wellness. Any point out in this publication of a specific item or service, or suggestion from an corporation or expert culture, does not symbolize an endorsement by ODS of that item, service, or pro advice.

Up-to-date: March 22, 2021 Heritage of alterations to this simple fact sheet