Source Naturals Vitamin B-1 (thiamin) is essential for the metabolism of carbohydrates, some amino acids, and alcohol. It is also necessary for the production of the neurotransmitter acetylcholine, and for the detoxification of both alcohol and lactic acid — a by-product of strenuous exercise. Thiamin plays important roles in the production of energy and ATP derived from reactions in the Krebs cycle.*

A high-carbohydrate diet, strenuous physical exercise, or chronic alcohol consumption may increase the physiological need for vitamin B-1, making supplementation particularly relevant for active individuals.

Suitable for vegetarians. Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no sugar, starch, salt, preservatives, or artificial color, flavor or fragrance.

Suggested Use: As a dietary supplement, 1 tablet daily.

Frequently Asked Questions

What is Vitamin B-1 (thiamin) good for?

Vitamin B-1, also known as thiamin, is essential for converting carbohydrates into energy and plays a key role in nerve function. It supports the production of acetylcholine — a principal neurotransmitter — and helps the body process lactic acid produced during exercise. It is a water-soluble vitamin, meaning the body cannot store it and regular intake is important.*

Who is most likely to benefit from a Vitamin B-1 supplement?

People who consume high amounts of carbohydrates, those who exercise intensely, or individuals who consume alcohol regularly may have higher thiamin requirements. Older adults and people with digestive conditions affecting absorption may also benefit from supplementation. Always consult your healthcare professional if unsure.

Can I take Vitamin B-1 with other B vitamins?

Yes. B vitamins work synergistically, and many healthcare professionals recommend taking them together as a B-complex for comprehensive support. Source Naturals Vitamin B-1 can be taken alongside other B vitamins or as part of a complete supplement routine.*

How much Vitamin B-1 do I need daily?

Adult daily requirements for thiamin are generally around 1.1–1.2 mg, though higher amounts may be beneficial for those with increased needs. Source Naturals Vitamin B-1 provides 100 mg per tablet, which is a high-potency dose designed to support optimal metabolic function. Consult your healthcare professional for personalised guidance.