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What should I discuss with my healthcare provider before taking thiamine (Vitamin B1)?

You should not use thiamine if you have ever had an allergic reaction to it.

Ask a doctor or pharmacist if it is safe for you to take this medicine if:

• you have any other medical conditions;
• you take other medications or herbal products; or
• you are allergic to any drugs or foods.

To make sure you can safely receive injectable thiamine, tell your doctor if you have kidney disease.

Thiamine is not expected to harm an unborn baby. Your thiamine dose needs may be different during pregnancy. Do not take thiamine without medical advice if you are pregnant or plan to become pregnant.

It is not known whether thiamine passes into breast milk. Your dose needs may be different while you are nursing. Do not take thiamine without medical advice if you are breast-feeding a baby.

How should I take thiamine (Vitamin B1)?

Use exactly as directed on the label, or as prescribed by your doctor. Do not use in larger or smaller amounts or for longer than recommended.

Injectable thiamine is injected into a muscle. You may be shown how to use injections at home. Do not self-inject this medicine if you do not fully understand how to give the injection and properly dispose of used needles and syringes.

Do not use the injectable medication if it has changed colors or has particles in it. Call your doctor for a new prescription.

The recommended dietary allowance of thiamine increases with age. Follow your healthcare provider's instructions. You may also consult the National Academy of Sciences "Dietary Reference Intake" or the U.S. Department of Agriculture's "Dietary Reference Intake" (formerly "Recommended Daily Allowances" or RDA) listings for more information.

Thiamine is only part of a complete program of treatment that may also include a special diet. It is very important to follow the diet plan created for you by your doctor or nutrition counselor. You should become very familiar with the list of foods you should eat or avoid to help control your condition.

Store at room temperature away from moisture, heat, and light.

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