Recommended Dosage and Usage

Discover Source Naturals Vitamin — For adults, the typical suggested use is one tablet daily, preferably with a meal to enhance absorption. Take with a full glass of water. Do not exceed the recommended dose unless advised by a healthcare provider. Each tablet provides 500 mg of thiamine (as thiamine HCl), which is well above the Recommended Dietary Allowance (RDA). High doses are generally well tolerated, but it is important to stay within safe limits. Keep the bottle tightly closed in a cool, dry place.

Who Should Consider a Thiamine Supplement?

While many Canadians obtain sufficient thiamine from a balanced diet, certain groups may benefit from supplementation. Individuals with higher metabolic demands—such as athletes or those under physical stress—may require additional thiamine. People with gastrointestinal conditions (e.g., Crohn's disease, ulcerative colitis) that impair nutrient absorption might also consider supplementation. Additionally, older adults and those who consume alcohol regularly are at greater risk of suboptimal thiamine levels due to reduced absorption or increased excretion. Vegans and vegetarians relying on thiamine-poor diets can also benefit from a reliable source of this essential vitamin.

What Is Thiamine (Vitamin B1)?

Vitamin B1, also known as thiamine, is an essential water-soluble vitamin that plays a fundamental role in energy metabolism and nervous system function. It acts as a coenzyme in converting carbohydrates into usable energy, helping your body fuel everyday activities. Additionally, thiamine is critical for synthesising acetylcholine, a neurotransmitter vital for nerve signaling. Despite its importance, the body does not store thiamine, making regular dietary intake or supplementation necessary for optimal health.

Source Naturals Vitamin B-1 provides 500 mg of pure thiamine (as thiamine HCl) per tablet, offering a high-potency option for those seeking targeted support.

Key Benefits of Thiamine Supplementation

Thiamine contributes to normal energy-yielding metabolism, helping transform food into fuel your cells can use. It also supports the healthy function of the nervous system by aiding nerve impulse transmission. Some individuals may find that maintaining adequate thiamine levels promotes mental clarity and focus, as the brain relies heavily on glucose metabolism. Additionally, thiamine supports normal heart function by helping maintain proper cellular energy production in cardiac tissue.

This product has not been evaluated by Health Canada. It is not intended to diagnose, treat, , or prevent any disease.

How to Choose a Thiamine Supplement

When selecting a vitamin B1 supplement, consider the form: thiamine HCl is the most common and well-absorbed, while thiamine mononitrate is less hygroscopic and often used in tablets. Benfotiamine, a fat-soluble derivative, is sometimes preferred for nerve support but is not present in this product. Dosage matters—500 mg is considered high potency and may be suitable for those needing extra support, but always consult a healthcare professional before starting high-dose supplements. Look for third-party testing certifications (e.g., USP, NSF) to ensure purity and potency. Source Naturals Vitamin B-1 is manufactured in the USA under cGMPs and is vegetarian, free from yeast, dairy, egg, gluten, soy, wheat, sugar, starch, preservatives, and artificial colours or flavors.

Frequently Asked Questions

What is the difference between thiamine HCl and benfotiamine?

Thiamine HCl is the standard synthetic form used in most supplements. It is water-soluble and well-absorbed but may be less effective for certain nerve-related concerns. Benfotiamine is a fat-soluble derivative that may have higher bioavailability for nerve tissue. This product contains thiamine HCl.

Can I take this supplement on an empty stomach?

It is generally fine, but taking it with food may reduce the risk of mild stomach upset and improve absorption. Most people tolerate thiamine well regardless.

Is this product suitable for vegans?

Yes, the tablets are vegetarian and contain No animal-derived ingredients.

Does this supplement contain caffeine or stimulants?

No, thiamine is a vitamin, not a stimulant. It may support energy metabolism but does not produce a caffeine-like effect.