Osovi's vitamin B1 is a strong thiamine supplement that supports energy metabolism and nervous system wellbeing, helping you stay focused and resilient. The standout ingredient, thiamine mononitrate, fuels carbohydrate metabolism and neurotransmitter synthesis, which supports energy and mood. Osavi stays committed to sustainability and inclusive nutrition, with vegan friendly capsules and recyclable packaging. It's manufactured in a facility that emphasises quality and safety.

Available Sizes & Variants:

100mg thiamine capsules - daily energy support for everyday vitality.

Benefits & Features:

• Energy metabolism is supported for everyday vitality.
• The standout ingredient, thiamine mononitrate, works with inulin in the capsule to support energy metabolism, nervous system health, and overall vitality, while the vegan capsule shell suits vegan, halal and kosher diets.
• Nervous system function and mood stability are supported through thiamine's role in neurotransmitter synthesis.
• Vegan, halal and kosher friendly formula fits diverse dietary needs.
• Daily use supports routine vitality by delivering a dependable, high strength B1 boost.

Osavi builds on a sustainability-first approach, pairing high strength B1 with thoughtful ingredients. The capsule shell is plant-based hydroxypropyl methyl cellulose, while inulin adds a gentle prebiotic fibre. Packaging is recyclable and the range is inclusive for vegan, vegetarian, halal and kosher diets. It’s that combination of ethics, clarity and everyday practicality that helps Osavi stand out in a busy supplement space.

Energy value, Fat, of which saturated fatty acids, of which unsaturated fatty acids, Carbohydrates, of which sugars, of which polyols, of which starch, Fibre, Protein, Salt, Thiamine, vitamin B1 (thiamine mononitrate)

• GTIN: 5904139921920
• Manufacturer: Osavi
• Size: 60 Capsules
• Categories: OsaviVitamin B Complex Supplements & TabletsVitamin 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.

Swallow one capsule with a glass of water, preferably with a meal or immediately after. Store in a dark and dry place at room temperature, out of the reach of small children. Do not exceed the recommended dose. Consult a physician if pregnant/nursing, taking medication, or have a medical condition. Food supplements must not be used as a substitute for a balanced, varied diet and a healthy lifestyle.

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

*Percent Daily Values are based on a 2,000 calorie diet. Your daily values may be higher or lower depending on your calorie needs.

The Active Ingredient Is: Vitamin B1 (Thiamine Mononitrate)

Vitamin B1, or thiamine, is a water-soluble vitamin important for normal energy metabolism and nervous system function.

This variant uses thiamine mononitrate, a common, well absorbed source of the vitamin that helps carbohydrate metabolism and neurotransmitter synthesis.

What Does Vitamin B1 Do?

Vitamin B1 helps convert carbohydrates into cellular energy and is involved in proper nervous system signalling.

That energy help lines up with health guidance recognising thiamine's role in energy production and nervous system activity, helping you keep daily vitality.

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

Osavi is a label rooted in sustainability, ethical sourcing and recyclable packaging, with a clear emphasis on quality and inclusivity for vegan, vegetarian, halal and kosher diets. This alignment with ethical manufacturing and a customer-first approach stood out when we assessed suppliers for Vitamin B1 across the market. Our team of medical experts looked at brands like Osavi to ensure they meet the strict standards we set for purity, potency and transparency, while also considering environmental responsibility. The brand's emphasis on accessible, well formulated products resonated with our sourcing criteria and our commitment to safe, consistent delivery to customers in the UK. This brand was assessed by our team of medical experts for compliance with the standards we enforce, and we found their approach to quality and manufacturing to be a strong fit for this supplement. For the British market, Osavi offers a dependable, inclusive option that supports our product integrity and consumer trust.