Source Naturals Vitamin B1 is a high potency supplement that supports energy metabolism and the nervous system, helping you feel steadier throughout the day. This formula keeps thiamine as the main active ingredient to power carbohydrate use and acetylcholine production, and magnesium helps nerve signals and muscle relaxation. Built on Source Naturals' long standing commitment to quality, this formula is allergen free and suitable for vegetarians.

Available Sizes & Variants:

100 tablets – convenient daily support for energy and nervous system health.

Benefits & Features:

• Supports energy metabolism for everyday stamina.
• Supports nervous system health with a pivotal coenzyme role and steady energy.
• Free from common allergens and suitable for vegetarians, giving broad peace of mind.
• Magnesium included supports neuromuscular transmission and helps muscles relax during daily activity.
• Designed for daily energy and mental clarity, the formula blends thiamine with minerals in a clean, allergen free mix that supports energy production and cognitive function.

Source Naturals has built a reputation for clean allergen free formulations that fit vegetarian lifestyles. This vitamin B1 option delivers thiamine as a coenzyme essential for energy production and acetylcholine synthesis, supporting nervous system and cardiovascular health. The magnesium included aids neuromuscular transmission and muscle relaxation, making daily life a touch easier. The tablets are designed for easy daily use, aligning with the brand’s long standing commitment to quality and purity. For those seeking broader support, this vitamin d supplement can complement the B1 formula, while the probiotic blend helps gut health alongside energy production.

Other Ingredients - Stearic acid, Hydroxyproply, Cellulose, Modified cellulose gum, Acacia gum, Magnesium stearate and Silica
Free From - Suitable for vegetarians. Contains no yeast, dairy, egg, gluten, soy or wheat. Contains no sugar, starch, preservatives, or artificial color, flavour or fragrance.

• GTIN: 21078008880
• Manufacturer: Source Naturals
• Categories: New ArrivalsSource NaturalsVitamin B ComplexVitamin B1 (Thiamine) Tablets & Supplements
• Best buy: 6 - 24 months+

United Kingdom Shipping:

Orders placed by 2pm (Monday to Friday) are dispatched the same day. Orders placed after 2pm will be dispatched the next working day.

Free shipping on orders over £50 to the UK.

Returns: Our products are meant to make you feel healthy and at your best. If you need to return your item, you can do so free of charge within 30 days in the same original and unopened packaging. Subject to T&C's.

Take one tablet per day, avoid using detailed language.

Please consult the product packaging for accurate instructions on how to use the product.

The Active Ingredient Is: Vitamin B1 (Thiamine)

Vitamin B1, also known as thiamine, is a water-soluble vitamin essential for energy metabolism and normal nervous system function.

This form provides thiamine in a high-potency tablet preparation to support daily physiological needs and contribute to carbohydrate metabolism, with attention to general neural and muscular function.

What Does Vitamin B1 Do?

Vitamin B1 participates in energy production by helping convert carbohydrates into cellular energy and supports the synthesis of a key neurotransmitter involved in nerve and muscle activity.

It also contributes to normal nervous system and cardiovascular function as part of a balanced diet and lifestyle, reflecting its recognised role in energy utilisation and neural support.

This product is not intended to diagnose, treat, cure, or prevent any disease.

Dietary supplements are not a replacement for a balanced diet. Do not take more than the recommended amount. Keep in a cool, dry area away from light and heat. Ensure they are out of children's reach and view.

Source Naturals is Welzo’s trusted partner for this vitamin B1 offering because their production approach centers on formulation quality and allergen safety, which aligns with our commitment to dependable everyday wellness. The brand has a longstanding reputation for delivering high‑potency ingredients with careful attention to the intake experience, including features like being free from common allergens and suitable for vegetarians. This heritage of reliability resonates with our UK customers who value consistency and thoughtful formulation.

Source Naturals’ quality philosophy is reflected in their clear emphasis on choosing ingredients that support clean, pure supplements. We recognise their careful production philosophy as a solid foundation for product integrity, reinforced by our team’s review of how we verify ingredient quality in practice. This partnership is further validated by our expert team of doctors, nurses, and nutritionists who oversee compliance and safety our expert team of doctors, nurses, and nutritionists and by our dedicated quality assessment how we verify ingredient quality.

Together, Source Naturals and Welzo offer a compelling fit for the British market, combining brand credibility with product-specific suitability and a rigorous evaluation process designed to safeguard consumer trust.