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| Other drug names: | A-Am An-Az B C-Ch Ci-Cz D-Dh Di-Dz E F G H I-J K-L M-Mh Mi-Mz N-Nh Ni-Nz O P-Pl Pm-Pz Q-R S-Sn So-Sz T-To Tp-Tz U-V W-Z 0-9 |
| Contents of this page: | |
Some commonly used brand names are:
In the U.S.--
In Canada--
Generic name product may be available in the U.S. and Canada.
Vitamins(VYE-ta-mins) are compounds that you must have for growth and health. They are needed in small amounts only and are usually available in the foods that you eat. Thiamine(THYE-a-min) (vitamin B 1 ) is needed for the breakdown of carbohydrates.
Some conditions may increase your need for thiamine. These include:
Also, the following groups of people may have a deficiency of thiamine:
Increased need for thiamine should be determined by your health care professional.
Lack of thiamine may lead to a condition called beriberi. Signs of beriberi include loss of appetite, constipation, muscle weakness, pain or tingling in arms or legs, and possible swelling of feet or lower legs. In addition, if severe, lack of thiamine may cause mental depression, memory problems, weakness, shortness of breath, and fast heartbeat. Your health care professional may treat this by prescribing thiamine for you.
Thiamine may also be used for other conditions as determined by your health care professional.
Claims that thiamine is effective for treatment of skin problems, chronic diarrhea, tiredness, mental problems, multiple sclerosis, nerve problems, and ulcerative colitis (a disease of the intestines), or as an insect repellant or to stimulate appetite have not been proven.
Injectable thiamine is administered only by or under the supervision of your health care professional. Other forms of thiamine are available without a prescription.
Thiamine is available in the following dosage forms:
Thiamine is found in various foods, including cereals (whole-grain and enriched), peas, beans, nuts, and meats (especially pork and beef). Some thiamine in foods is lost with cooking.
Vitamins alone will not take the place of a good diet and will not provide energy. Your body also needs other substances found in food such as protein, minerals, carbohydrates, and fat. Vitamins themselves often cannot work without the presence of other foods.
The daily amount of thiamine needed is defined in several different ways.
Normal daily recommended intakes in milligrams (mg) for thiamine are generally defined as follows:
| Persons | U.S. (mg) |
Canada(mg) |
| Infants and children Birth to 3 years of age |
0.3-0.7 | 0.3-0.6 |
| 4 to 6 years of age | 0.9 | 0.7 |
| 7 to 10 years of age | 1 | 0.8-1 |
| Adolescent and adult males | 1.2-1.5 | 0.8-1.3 |
| Adolescent and adult females | 1-1.1 | 0.8-0.9 |
| Pregnant females | 1.5 | 0.9-1 |
| Breast-feeding females | 1.6 | 1-1.2 |
If you are taking this dietary supplement without a prescription, carefully read and follow any precautions on the label. For thiamine, the following should be considered:
Allergies--Tell your health care professional if you have ever had any unusual or allergic reaction to thiamine. Also tell your health care professional if you are allergic to any other substances, such as foods, preservatives, or dyes.
Pregnancy--It is especially important that you are receiving enough vitamins when you become pregnant and that you continue to receive the right amount of vitamins throughout your pregnancy. The healthy growth and development of the fetus depend on a steady supply of nutrients from the mother. However, taking large amounts of a dietary supplement in pregnancy may be harmful to the mother and/or fetus and should be avoided.
Breast-feeding--It is especially important that you receive the right amounts of vitamins so that your baby will also get the vitamins needed to grow properly. However, taking large amounts of a dietary supplement while breast-feeding may be harmful to the mother and/or baby and should be avoided.
Children--Problems in children have not been reported with intake of normal daily recommended amounts.
Older adults--Problems in older adults have not been reported with intake of normal daily recommended amounts. Studies have shown that older adults may have lower blood levels of thiamine than younger adults. Your health care professional may recommend that you take a vitamin supplement that contains thiamine.
Medicines or other dietary supplements--Although certain medicines or dietary supplements should not be used together
at all, in other cases they may be used together even if an interaction might
occur. In these cases, your health care professional may want to change the
dose, or other precautions may be necessary. Tell your health care professional
if you are taking any other dietary supplement or prescription or nonprescription
(over-the-counter [OTC]) medicine. Dosing--The amount of thiamine needed to meet normal
daily recommended intakes will be different for different individuals. The
following information includes only the average amounts of thiamine.
Missed dose--If you miss taking a vitamin for 1 or more days
there is no cause for concern, since it takes some time for your body to become
seriously low in vitamins. However, if your health care professional has recommended
that you take this vitamin, try to remember to take it as directed every day.
Storage--To store this dietary supplement:
Along with its needed effects, a dietary supplement may cause some unwanted
effects. Although not all of these side effects may occur, if they do occur
they may need medical attention. Check with your health care professional immediately
if any of the following side effects occur: Rare--Soon after receiving injection only Coughing; difficulty in swallowing; hives; itching of skin; swelling of face, lips, or eyelids; wheezing or difficulty in breathing Other
side effects not listed above may also occur in some individuals. If you notice
any other effects, check with your health care professional. Once a medicine or dietary supplement
has been approved for marketing for a certain use, experience may show that
it is also useful for other medical problems. Although this use is not included
in product labeling, thiamine is used in certain patients with the following
medical conditions:
Proper Use of This Dietary Supplement
Side Effects of This Dietary Supplement
Additional Information
Other than the above information, there is no additional information relating to proper use, precautions, or side effects for these uses.
Revised: 06/24/92
Interim revision: 07/29/94; 05/26/95
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