Home > Medical Reference > Drug Notes (English)

Thiamine (Vitamin B-1) (By mouth)

Brand Name(s):

Rite Aid Vitamin B-1, Good Neighbor Pharmacy Vitamin B1, B1-50, B1-500

There may be other brand names for this medicine.

When This Medicine Should Not Be Used:

You should not use this medicine if you have had an allergic reaction to thiamine (Vitamin B-1).

How to Use This Medicine:

Tablet, Capsule, Liquid

Your doctor will tell you how much and when to take your medicine. Keep all medicine away from children.
You may take your medicine with or without food.
Measure your oral liquid medicine using a marked measuring spoon or medicine cup.

If a dose is missed:

Take the missed dose as soon as possible.
Skip the missed dose if it is almost time for your next dose.
You should not use two doses at the same time.
Missing a dose is generally not a cause for concern.

How to Store and Dispose of This Medicine:

Store the tablets at room temperature in a closed container. Keep away from heat, moisture, and direct light.
Store the oral liquid at room temperature, away from heat and light. Do not freeze.

Drugs and Foods to Avoid:

Ask your doctor or pharmacist before using any other medicine, including over-the-counter medicines, vitamins, and herbal products.

Follow your doctor's orders if he or she has given you a special diet.

Warnings While Using This Medicine:

Tell your doctor if you are pregnant or breastfeeding, or if you become pregnant.

Possible Side Effects While Using This Medicine:

Call your doctor right away if you notice any of these side effects:

Itching or trouble breathing
Swelling of face, lips or eyelids

If you notice other side effects that you think are caused by this medicine, tell your doctor:

Reviewed last on: 1/4/2010

The information provided herein should not be used during any medical emergency or for the diagnosis or treatment of any medical condition. A licensed medical professional should be consulted for diagnosis and treatment of any and all medical conditions. Call 911 for all medical emergencies. Links to other sites are provided for information only -- they do not constitute endorsements of those other sites. © 1997- A.D.A.M., Inc. Any duplication or distribution of the information contained herein is strictly prohibited.

A.D.A.M., Inc. is accredited by URAC, also known as the American Accreditation HealthCare Commission (www.urac.org). URAC's accreditation program is an independent audit to verify that A.D.A.M. follows rigorous standards of quality and accountability. A.D.A.M. is among the first to achieve this important distinction for online health information and services. Learn more about A.D.A.M.'s editorial policy, editorial process and privacy policy. A.D.A.M. is also a founding member of Hi-Ethics and subscribes to the principles of the Health on the Net Foundation (www.hon.ch).

Connect with UMMC

© 2011 University of Maryland Medical Center (UMMC). All rights reserved.
UMMC is a member of the University of Maryland Medical System,
22 S. Greene Street, Baltimore, MD 21201. TDD: 1-800-735-2258 or 1.866.408.6885