Vitamin B1 Guide

Vitamin B1, also called thiamine, helps your body use nutrients from food for energy and supports a healthy nervous system. Learn what it does, where it comes from, and what to consider when choosing a supplement.

✅ Reviewed by Jamieson's Science Team

Quick Answers

Is vitamin B1 the same as thiamine?

Yes. Vitamin B1 is also known as thiamine.

Does vitamin B1 support energy?

Yes. Thiamine helps your body use nutrients from food as part of normal energy metabolism.¹

Can vitamin B1 be found in a B-complex?

Yes. Thiamine is commonly included with other B vitamins in B-complex supplements.

What is vitamin B1?

Vitamin B1, or thiamine, is an essential B vitamin your body needs every day. Because it’s water-soluble, your body doesn’t store large amounts of it. 

Thiamine helps your body use the carbohydrates, fats, and proteins in food and also supports normal growth and a healthy nervous system.¹ 

How does vitamin B1 support the body?

Vitamin B1 helps your body turn the nutrients in food into energy. It’s especially involved in how your body processes carbohydrates.¹ 

It also supports normal nerve function and healthy tissue formation. Jamieson’s current Vitamin B1 product uses these same benefit areas. 

Which health goals can vitamin B1 support?

Energy Support

Vitamin B1 helps your body metabolize carbohydrates, fats, and proteins as part of normal energy production.¹

Everyday Wellness

Thiamine helps support normal growth and everyday nutrient metabolism.¹

Nervous System Support

Vitamin B1 helps maintain a healthy nervous system.¹

How can vitamin B1 fit into your routine?

Vitamin B1 is part of the everyday process your body uses to get energy from food. 

  • Eat a varied diet: Whole grains and other nutritious foods can contribute thiamine. Health Canada notes that whole grains can help improve thiamine intake. 
  • For everyday energy: Thiamine helps your body use carbohydrates, fats, and proteins from food.¹ 
  • For nervous-system health: Vitamin B1 also supports normal nerve function.¹ 
  • Check your other supplements: B-complex formulas and multivitamins may already contain thiamine. 

*It is important to consult your trusted healthcare practitioner before adding any new natural health supplement to your routine. 

What should you look for in a vitamin B1 supplement?

Start with whether you need B1 on its own or as part of a broader B-vitamin formula.

  • Check the form: Jamieson Vitamin B1 provides thiamine as thiamine mononitrate. 
  • Compare the amount: Standalone formulas may provide much more B1 than a multivitamin or B-complex. 
  • Choose standalone or complex: A single-ingredient product can target B1 specifically, while a B-complex provides several B vitamins together. 
  • Check for overlap: Multivitamins and B-complex formulas may already contain thiamine. 
  • Choose a format you’ll take consistently: Jamieson’s standalone B1 comes in tablets. 
  • Look for an NPN: Choose a licensed natural health product with an eight-digit NPN. 
  • Look for quality: Jamieson products are backed by the Jamieson 360 Quality Promise. 

For more than 100 years, Jamieson has combined scientific expertise with rigorous quality testing. Every product is backed by the Jamieson 360 Quality Promise. 

*It is important to consult your trusted healthcare practitioner before adding any new natural health supplement to your routine.  

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FAQs
Is vitamin B1 the same as thiamine?

Yes. Vitamin B1 and thiamine are two names for the same essential vitamin.

What does vitamin B1 do for energy?

Vitamin B1 helps your body metabolize carbohydrates, fats, and proteins from food. This process helps your body make and use energy.¹

How much vitamin B1 do adults need?

Health Canada’s dietary reference values recommend 1.2 mg per day for adult men and 1.1 mg per day for adult women. Needs are slightly higher during pregnancy and breastfeeding.²

Sources

1. Health Canada. Multi-Vitamin/Mineral Supplements Monograph. Natural and Non-prescription Health Products Directorate.[Text Wrapping Break]https://webprod.hc-sc.gc.ca/nhpid-bdipsn/atReq?atid=multi_vitmin_suppl 

2. Health Canada. Dietary Reference Intakes Tables: Reference Values for Vitamins.[Text Wrapping Break]https://www.canada.ca/en/health-canada/services/food-nutrition/healthy-eating/dietary-reference-intakes/tables/reference-values-vitamins.html 

3. Health Canada. Canada’s Dietary Guidelines: Why Each Dietary Shift Is Needed.[Text Wrapping Break]https://www.canada.ca/en/health-canada/services/food-guide/explore/dietary-guidelines/applying/dietary-shifts-people-can-make-healthier-eating/why-needed.html