Thiamine (vitamin B1) is used to prevent or treat low
levels of vitamin B1 in people who do not get enough of the vitamin from
their diets. Most people who eat a normal diet do not need extra vitamin
B1. However, some conditions (such as alcoholism, cirrhosis,
stomach/intestinal problems) can cause low levels of vitamin B1. Vitamin B1
plays an important role in the body. It is needed to maintain the health of
the nerves and the heart. Low levels of vitamin B1 may cause heart failure
and mental/nerve problems.
Take this vitamin by mouth with or without food, usually
1 to 3 times daily. Follow all directions on the product package, or take
as directed by your doctor. If you have any questions, ask your doctor or
pharmacist.
The dosage is based on your medical condition and
response to treatment.
Use this vitamin regularly to get the most benefit from
it. To help you remember, take it at the same time(s) each
day.
Tell your doctor if your condition lasts or gets worse.
If you think you may have a serious medical problem, get medical help right
away.
This vitamin usually has no side effects. If you have
any unusual effects, contact your doctor or pharmacist
promptly.
A very serious allergic reaction to this drug is rare.
However, get medical help right away if you notice any symptoms of a
serious allergic reaction, including:
- rash
- itching/swelling (especially of the face/tongue/throat)
- severe dizziness
- trouble breathing
This is not a complete list of possible side effects. If
you notice other effects not listed above, contact your doctor or
pharmacist.
In the US - Call your doctor for medical advice about side effects.
You may report side effects to FDA at 1-800-FDA-1088 or at
www.fda.gov/medwatch.
In Canada - Call your doctor for medical advice about
side effects. You may report side effects to Health Canada at
1-866-234-2345.
Before taking thiamine, tell your doctor or pharmacist
if you are allergic to it; or if you have any other allergies. This product
may contain inactive ingredients, which can cause allergic reactions or
other problems. Talk to your pharmacist for more details.
Before having surgery, tell your doctor or dentist about
all the products you use (including prescription drugs, nonprescription
drugs, and herbal products).
During pregnancy, this vitamin has been found to be safe
when used in recommended doses. Higher doses during pregnancy should be
used only when clearly needed. Discuss the risks and benefits with your
doctor.
This vitamin passes into breast milk and is considered
to be safe during breastfeeding when used in recommended doses. Consult
your doctor for more information.
Drug interactions may change how your medications work
or increase your risk for serious side effects. This document does not
contain all possible drug interactions. Keep a list of all the products you
use (including prescription/nonprescription drugs and herbal products) and
share it with your doctor and pharmacist. Do not start, stop, or change the
dosage of any medicines without your doctor's approval.
This vitamin may interfere with certain lab tests (such
as uric acid levels, urobilinogen urine test), possibly causing false test
results. Make sure lab personnel and all your doctors know you use this
vitamin.
If someone has overdosed and has serious symptoms such
as passing out or trouble breathing, call 911. Otherwise, call a poison
control center right away. US residents can call 1-800-222-1222. Canada
residents can call 1-844-764-7669.
Lab and/or medical tests (such as thiamine levels) may
be done while you are using this medication. Keep all medical and lab
appointments. Consult your doctor for more details.
This product is not a substitute for a proper diet. It
is best to get your vitamins from healthy foods. Thiamine is commonly found
in cereal grains, bread, pork, and beans, among others. Consult your
doctor, pharmacist, or nutritionist for more details.
If you miss a dose, take it as soon as you remember. If
it is near the time of the next dose, skip the missed dose. Take your next
dose at the regular time. Do not double the dose to catch
up.
Different brands of this vitamin have different storage
needs. Check the product package for instructions on how to store your
brand, or ask your pharmacist. Do not store in the bathroom. Keep all
medications away from children and pets.
Do not flush medications down the toilet or pour them
into a drain unless instructed to do so. Properly discard this product when
it is expired or no longer needed. Consult your pharmacist or local waste
disposal company.