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Thiamine HCl injection

Important Note

The following information is intended to supplement, not substitute for, the expertise and judgment of your physician, pharmacist or other healthcare professional. It should not be construed to indicate that use of the drug is safe, appropriate, or effective for you. Consult your healthcare professional before using this drug.




Thiamine, (vitamin B1), is important for carbohydrate metabolism. Thiamine supplements are necessary to treat or prevent thiamine deficiency.

How To Use

This medication is injected into a vein or muscle up to 3 times a day. Follow any specific dietary recommendations made by your doctor or nutritionist.

Side Effects

This may cause nausea, weakness, a feeling of warmth, sweating, itching or restlessness. The injection site may be tender. If these symptoms continue or become bothersome, inform your doctor. Notify your doctor if you experience: shortness of breath, tightness of the throat. If you notice other effects not listed above, contact your doctor or pharmacist.


Before taking this, tell your doctor if you have had any reaction to thiamine in the past or if you have any allergies. This medication has not been shown to increase risk to the fetus when administered during pregnancy. Although the possibility for fetal harm appear remote, tell your doctor if you are pregnant. It is not known if thiamine is excreted into breast milk. Consult your doctor before breast-feeding.

Drug Interactions

Tell your doctor of any nonprescription or prescription medication you may take. Do not start or stop any medicine without doctor or pharmacist approval.


If overdose is suspected, contact your local poison control center or emergency room immediately.


Thiamine is commonly found in foods such as dry beans, whole wheat flour, seeds, nuts, brewer's yeast, enriched and fortified grains and cereals, liver, kidney and pork. Eat more of these foods to increase the amount of thiamine in your diet.

Missed Dose

If you miss a dose, use it as soon as you remember. If it is near the time of the next dose, skip the missed dose and resume your usual dosing schedule. Do not "double-up" the dose to catch up.


Store at room temperature between 59 and 86 degrees F (15 to 30 degrees C) away from heat and light as directed. Keep out of reach of children. Properly discard of needles and syringes after use.