Thiamin – Consumer

A woman discussing supplements with a pharmacist.

This is a reader-welcoming overview of Thiamin. For more details, see our health and fitness professional actuality sheet on Thiamin.

What is thiamin and what does it do?

Thiamin (also identified as vitamin B1) can help convert the foodstuff you take in into the electricity you require. Thiamin is important for the expansion, development, and purpose of the cells in your human body.

How much thiamin do I require?

The volume of thiamin you require is dependent on your age and intercourse. Ordinary everyday proposed amounts are outlined beneath in milligrams (mg).

Daily life Stage Advised Amount of money
Delivery to 6 months .two mg
Infants 7–12 months .three mg
Little ones 1–3 several years .five mg
Little ones 4–8 several years .6 mg
Little ones 9–13 several years .9 mg
Teen boys 14–18 several years one.two mg
Teen women 14–18 several years one. mg
Adult men one.two mg
Girls mg
Pregnant teens and ladies one.four mg
Breastfeeding teens and ladies one.four mg

What food items provide thiamin?

Thiamin is found normally in numerous food items and is added to some fortified food items. You can get proposed amounts of thiamin by having a range of food items, together with the subsequent:

  • Whole grains and fortified bread, cereal, pasta, and rice
  • Meat (primarily pork) and fish
  • Legumes (such as black beans and soybeans), seeds, and nuts

What forms of thiamin dietary dietary supplements are obtainable?

Thiamin is found in multivitamin/multimineral dietary supplements, in B-elaborate dietary dietary supplements, and in dietary supplements made up of only thiamin. Typical types of thiamin in dietary dietary supplements are thiamin mononitrate and thiamin hydrochloride. Some dietary supplements use a synthetic variety of thiamin identified as benfotiamine.

Am I having enough thiamin?

Most individuals in the United States get enough thiamin from the food items they take in. Thiamin deficiency is unusual in this region. Even so, sure groups of individuals are more very likely than some others to have difficulty having enough thiamin:

Discuss with your healthcare provider(s) about thiamin and other dietary dietary supplements to aid you ascertain which, if any, may well be valuable for you.

What takes place if I will not get enough thiamin?

You can produce thiamin deficiency if you never get enough thiamin in the food items you take in or if your human body eradicates as well much or absorbs as well minimal thiamin.

Thiamin deficiency can bring about decline of bodyweight and appetite, confusion, memory decline, muscle weak point, and heart problems. Intense thiamin deficiency qualified prospects to a illness identified as beriberi with the added signs and symptoms of tingling and numbness in the ft and hands, decline of muscle, and weak reflexes. Beriberi is not frequent in the United States and other designed nations around the world.

A more frequent case in point of thiamin deficiency in the United States is Wernicke-Korsakoff syndrome, which mostly has an effect on individuals with alcoholism. It causes tingling and numbness in the hands and ft, severe memory decline, disorientation, and confusion.

What are some results of thiamin on health and fitness?

Researchers are finding out thiamin to superior comprehend how it has an effect on health and fitness. Below are some examples of what this exploration has revealed.

Diabetic issues

People with diabetic issues generally have minimal levels of thiamin in their blood. Researchers are finding out irrespective of whether thiamin dietary supplements can strengthen blood sugar levels and glucose tolerance in individuals with kind two diabetic issues. They are also finding out irrespective of whether benfotiamine (a synthetic variety of thiamin) dietary supplements can aid with nerve destruction caused by diabetic issues.

Heart failure

Lots of individuals with heart failure have minimal levels of thiamin. Researchers are finding out irrespective of whether thiamin dietary supplements may well aid individuals with heart failure.

Alzheimer’s illness

Researchers are finding out the likelihood that thiamin deficiency could have an affect on the dementia of Alzheimer’s illness. Whether thiamin dietary supplements could aid mental purpose in individuals with Alzheimer’s illness wants further more study.

Can thiamin be damaging?

Thiamin has not been revealed to bring about any damage.

Does thiamin interact with medicines or other dietary dietary supplements?

Indeed. Some medicines can lower thiamin levels in the human body. Below are a few examples:

  • Furosemide (Lasix®), which is applied to deal with substantial blood stress and swelling caused by excess fluid in the human body
  • Fluorouracil (five-fluorouracil and Adrucil®), which is applied in chemotherapy treatments for some sorts of most cancers

Tell your medical doctor, pharmacist, and other healthcare providers about any dietary dietary supplements and prescription or more than-the-counter medicines you take. They can convey to you if the dietary dietary supplements may well interact with your medicines or if the medicines may well interfere with how your human body absorbs, works by using, or breaks down nutrition such as thiamin.

Thiamin and healthful having

People must get most of their nutrition from foodstuff and drinks, according to the federal government’s Dietary Recommendations for Americans. Meals have natural vitamins, minerals, dietary fiber, and other factors that advantage health and fitness. In some instances, fortified food items and dietary dietary supplements are helpful when it is not achievable to satisfy wants for just one or more nutrition (e.g., throughout precise life phases such as being pregnant). For more info about creating a wholesome dietary pattern, see the Dietary Recommendations for Americansexternal link disclaimer and the U.S. Section of Agriculture’s MyPlate.external link disclaimer

Where can I find out more about thiamin?

  • For normal info on thiamin:
  • For more info on foodstuff sources of thiamin:
  • For more tips on picking out dietary dietary supplements:
  • For info about creating a wholesome dietary pattern:


This actuality sheet by the Workplace of Dietary Dietary supplements (ODS) delivers info that must not take the spot of healthcare tips. We stimulate you to converse to your healthcare providers (medical doctor, registered dietitian, pharmacist, etcetera.) about your desire in, thoughts about, or use of dietary dietary supplements and what could be very best for your overall health and fitness. Any mention in this publication of a precise solution or provider, or recommendation from an business or professional society, does not depict an endorsement by ODS of that solution, provider, or professional tips.

Current: March 22, 2021 Historical past of variations to this actuality sheet