December 6, 2022

Lepet It Bistrot

Caring for Life

Thiamin – Consumer

5 min read

A woman discussing supplements with a pharmacist.

This is a reader-pleasant overview of Thiamin. For additional particulars, see our wellbeing experienced fact sheet on Thiamin.

What is thiamin and what does it do?

Thiamin (also called vitamin B1) allows switch the foodstuff you take in into the vitality you have to have. Thiamin is important for the development, growth, and functionality of the cells in your physique.

How significantly thiamin do I have to have?

The total of thiamin you have to have relies upon on your age and sex. Ordinary daily recommended quantities are listed underneath in milligrams (mg).

Everyday living Phase Advisable Amount of money
Delivery to six months .two mg
Infants 7–12 months .3 mg
Young children 1–3 a long time .five mg
Young children 4–8 a long time .six mg
Young children 9–13 a long time .9 mg
Teen boys 14–18 a long time one.two mg
Teen women 14–18 a long time one. mg
Males one.two mg
Women mg
Pregnant teenagers and girls one.four mg
Breastfeeding teenagers and girls one.four mg

What foods deliver thiamin?

Thiamin is identified naturally in several foods and is included to some fortified foods. You can get recommended quantities of thiamin by eating a range of foods, together with the pursuing:

  • Full grains and fortified bread, cereal, pasta, and rice
  • Meat (specially pork) and fish
  • Legumes (this kind of as black beans and soybeans), seeds, and nuts

What varieties of thiamin dietary nutritional supplements are out there?

Thiamin is identified in multivitamin/multimineral nutritional supplements, in B-complicated dietary nutritional supplements, and in nutritional supplements containing only thiamin. Common varieties of thiamin in dietary nutritional supplements are thiamin mononitrate and thiamin hydrochloride. Some nutritional supplements use a artificial sort of thiamin called benfotiamine.

Am I obtaining plenty of thiamin?

Most men and women in the United States get plenty of thiamin from the foods they take in. Thiamin deficiency is unusual in this place. Nonetheless, specified teams of men and women are additional probably than other folks to have problems obtaining plenty of thiamin:

Chat with your healthcare service provider(s) about thiamin and other dietary nutritional supplements to help you identify which, if any, might be important for you.

What occurs if I will not get plenty of thiamin?

You can produce thiamin deficiency if you don’t get plenty of thiamin in the foods you take in or if your physique gets rid of far too significantly or absorbs far too small thiamin.

Thiamin deficiency can cause reduction of weight and hunger, confusion, memory reduction, muscle weakness, and heart problems. Significant thiamin deficiency potential customers to a illness called beriberi with the included indications of tingling and numbness in the toes and palms, reduction of muscle, and inadequate reflexes. Beriberi is not frequent in the United States and other developed countries.

A additional frequent example of thiamin deficiency in the United States is Wernicke-Korsakoff syndrome, which largely influences men and women with alcoholism. It will cause tingling and numbness in the palms and toes, extreme memory reduction, disorientation, and confusion.

What are some results of thiamin on wellbeing?

Scientists are studying thiamin to superior recognize how it influences wellbeing. Here are some examples of what this investigation has revealed.

Diabetic issues

People today with diabetic issues often have reduced degrees of thiamin in their blood. Scientists are studying no matter whether thiamin nutritional supplements can boost blood sugar degrees and glucose tolerance in men and women with variety two diabetic issues. They are also studying no matter whether benfotiamine (a artificial sort of thiamin) nutritional supplements can help with nerve problems caused by diabetic issues.

Coronary heart failure

Quite a few men and women with heart failure have reduced degrees of thiamin. Scientists are studying no matter whether thiamin nutritional supplements might help men and women with heart failure.

Alzheimer’s illness

Scientists are studying the likelihood that thiamin deficiency could influence the dementia of Alzheimer’s illness. No matter if thiamin nutritional supplements may well help mental functionality in men and women with Alzheimer’s illness needs even more analyze.

Can thiamin be dangerous?

Thiamin has not been revealed to cause any hurt.

Does thiamin interact with prescription drugs or other dietary nutritional supplements?

Certainly. Some medications can decrease thiamin degrees in the physique. Here are a pair examples:

  • Furosemide (Lasix®), which is made use of to address large blood pressure and inflammation caused by extra fluid in the physique
  • Fluorouracil (five-fluorouracil and Adrucil®), which is made use of in chemotherapy therapies for some sorts of cancer

Inform your medical professional, pharmacist, and other healthcare providers about any dietary nutritional supplements and prescription or around-the-counter medications you take. They can inform you if the dietary nutritional supplements might interact with your medications or if the medications might interfere with how your physique absorbs, makes use of, or breaks down vitamins and minerals this kind of as thiamin.

Thiamin and healthful eating

People today need to get most of their vitamins and minerals from foodstuff and drinks, in accordance to the federal government’s Dietary Recommendations for Us residents. Foodstuff comprise nutritional vitamins, minerals, dietary fiber, and other elements that gain wellbeing. In some cases, fortified foods and dietary nutritional supplements are beneficial when it is not attainable to meet needs for a person or additional vitamins and minerals (e.g., through certain daily life stages this kind of as being pregnant). For additional data about building a nutritious dietary sample, see the Dietary Recommendations for Us residentsexternal link disclaimer and the U.S. Division of Agriculture’s MyPlate.external link disclaimer

In which can I discover out additional about thiamin?

  • For normal data on thiamin:
  • For additional data on foodstuff sources of thiamin:
  • For additional advice on picking dietary nutritional supplements:
  • For data about building a nutritious dietary sample:


This fact sheet by the Office of Dietary Health supplements (ODS) offers data that need to not take the area of healthcare advice. We inspire you to converse to your healthcare providers (medical professional, registered dietitian, pharmacist, etc.) about your interest in, queries about, or use of dietary nutritional supplements and what may well be most effective for your all round wellbeing. Any point out in this publication of a certain product or assistance, or advice from an business or experienced society, does not represent an endorsement by ODS of that product, assistance, or pro advice.

Up to date: March 22, 2021 Heritage of improvements to this fact sheet

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