Ultra-Pure B-Complex Supplement

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Janine S.

Verified Buyer

After years of buying cheap supermarket B-vitamins and feeling no difference, I switched to Longevity Box. The energy stability throughout the day is remarkable, and I love that they don't pump the capsules full of useless fillers. Finally, a B-complex that actually works!

Ultra-Pure B-Complex Supplement

30 servings | 531mg dose | From £0.07 per serving
Elevate cellular energy and support optimal methylation with our pure, filler-free Ultra B-Complex.
Energy: Drive mitochondrial ATP production Cognition: Support neurotransmitter synthesis and focus Methylation: Optimise DNA repair and cardiovascular health
Size 1 Pack 3 Packs 6 Packs
£ 14 99 £ 9 99

In stock • Ships today • 24–48 hour delivery

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Janine S.

Verified Buyer

After years of buying cheap supermarket B-vitamins and feeling no difference, I switched to Longevity Box. The energy stability throughout the day is remarkable, and I love that they don't pump the capsules full of useless fillers. Finally, a B-complex that actually works!

Zero Fillers or Binders

700-Day Purity Guarantee

Third-Party Batch Testing

Zero Fillers or Binders

700-Day Purity Guarantee

Third-Party Batch Testing

Longevity Box Ultra B-Complex: Optimise Cellular Energy & Methylation

A clinical-grade complex of highly bioavailable B-vitamins designed to drive metabolic efficiency and bypass genetic methylation bottlenecks. While standard supplements use cheap, inactive forms that your body struggles to convert, our formulation delivers the exact active molecules your cells require—including 5-MTHF, dual-form B12, and Benfotiamine.

 

  • Drive Mitochondrial Energy: Utilises 100mg of Benfotiamine (highly absorbable B1) and Pyridoxal 5'-Phosphate (B6) to convert dietary inputs into sustained cellular energy (ATP), eliminating chronic fatigue.
  • Maximise Methylation: Delivers 400µg of active Folate (5-MTHF) and 400µg of active B12 to guarantee efficient DNA synthesis, neurotransmitter production, and healthy homocysteine metabolism.
  • Zero Synthetic Excipients: We completely eliminated industry-standard flow agents and replaced them with functional methyl-donors like TMG (150mg) and Choline, ensuring the capsule contains exactly zero hidden junk and 100% active compounds.

Targets 6 Hallmarks of Ageing

Measurable Results From Day 1

After 2 Weeks

Immediate shifts in energy metabolism. You will experience a reduction in mid-afternoon fatigue and sharper daily focus as your cells receive highly bioavailable precursors for ATP production.

After 6 Weeks

Neurotransmitter synthesis stabilises. You may notice an increased resilience to stress, a more balanced mood, and improved cognitive clarity as the active B6, Folate, and B12 optimise your nervous system.

After 12 Weeks

Systemic methylation benefits take hold. Crucial biochemical pathways are running efficiently, actively managing homocysteine levels to support long-term cardiovascular health and efficient liver detoxification.

After 6 Months

Measurable enhancement in baseline vitality. With cellular energy and DNA synthesis permanently supported, you establish a solid physiological foundation for extended healthspan and robust healthy ageing.

The Longevity Box Standard: Proof, Not Promises

99%+ Purity. 700-Day Guarantee.

We verify every batch exceeds 99% purity and guarantee its potency for 700 days. That is our standard.

Active Ingredients Only. Zero Fillers.

Our formula is 100% active ingredients. We reject the industry norm of adding binders, preservatives, or junk. You get results, not filler.

Third-Party Verified. Every Single Batch

Trust is verified. Every batch is independently tested in the UK for purity and potency. We don't just claim quality; we prove it.

Evidence-Led. Backed by Science

Our formulations are driven by science. We select only molecules with proven, measurable effects on the core mechanisms of healthspan and cellular performance.

Proof vs. Promises

Longevity Box Alpha GPC

>99% Purity

Zero Nasties. Ever.

3rd Party Tested

700 Day Purity Gaurantee

Evidence-Led Formulation

Other Brands

Inferior Purity

Fillers, Additives, Preservatives, Binders, Expients

No Independent Testing

30 Day Guarantee

Rarely validated by top scientific institutions

The Ultimate Bioavailable B-Complex for Cellular Energy and Methylation Support

Ultra B-Complex is a high-potency, targeted formulation designed to optimise your baseline energy and neurological function. As metabolic demands increase, relying on inferior, unmethylated B-vitamins leaves you fatigued and chemically inefficient. Our complex delivers 100% active, bioavailable compounds to support systemic resilience.

**Advanced Methylation Support**

Includes 400µg of Folate (as 5-MTHF) and dual-form Vitamin B12 (Methylcobalamin and Adenosylcobalamin) to drive optimal homocysteine metabolism and DNA synthesis.

**Superior Cellular Energy**

Features 100mg of Benfotiamine (a highly bioavailable, fat-soluble form of Vitamin B1) and 50mg of Niacinamide to sustain mitochondrial energy production without the 'niacin flush'.

**Enhanced with TMG & Choline**

Where other brands use cheap fillers and flow agents, we use functional actives. Our formula includes 150mg of TMG (Betaine Anhydrous) and 50mg of Choline Bitartrate...

Ingredients

Active Ingredients:

Thiamin Vitamin B1 (as Benfotiamine) 100mg, Riboflavin (as 5'-Phosphate; B2) 15mg, Vitamin B3 (as Niacinamide) 50mg, Pantothenic acid (as calcium D-Pantothenate; B5) 100mg, Vitamin B6 (as Pyridoxal 5'-Phosphate) 15mg, Folate Vitamin B9 (as 5-MTHF) 400µg, Vitamin B12 (as Methylcobalamin) 200µg, Vitamin B12 (as Adenosylcobalamin) 200µg, Biotin (as D-Biotin; B7) 400µg, TMG (Betaine Anhydrous) 150mg, Myo-Inositol 50mg, Choline Bitartrate 50mg.

Other ingredients: vegetarian capsule (hydroxypropylmethylcellulose).

All of our products are free from binders, fillers, preservatives or additives. We pride ourselves on this as it’s truly unique to the supplement industry. We invite you to look at the ingredient labels from every other supplement brand and tell us if you find another brand with the same zero-tolerance policy across its entire range :)

How to use and store

Allergy Advice:

Free from gluten, wheat, diary, eggs, soya and nuts.

 

Suggested dosage:

Take one (1) capsules daily with or without food, or as recommended by your healthcare practitioner. Store in a cool, dry air tight and dark place to avoid degradation.

 

Warning:

  • Dietary supplements should not be a substitute for a balanced diet and healthy lifestyle
  • This product should be stored out of the reach of children.
  • Do not exceed the stated recommended daily dosage.

Purity tests

Ensuring maximum levels of safety, purity and quality is everything to us. We work with well established suppliers that have regular factory inspections and are certified with CGMP and ISO to ensure the highest standards are consistently met.

Delivery, Returns & Guarantee

60-Day Money Back Guarantee

We want you to feel confident in giving Met4Min a try. Because the only way to appreciate how effective it will be for you is to try it yourself. For this reason, every pack of Met4Min comes with a 60-day money-back guarantee. This means that if within 60 days you don’t notice any benefit or simply change your mind and want your money back, return the product to get a full refund.

700-day Purity Guarantee

In addition to our 60-day money-back guarantee, we also have an unprecedented 700-day purity guarantee that ensures our products remain pure and reliable from the moment they arrive until you finish taking them. Peace of mind that you truly are extending your healthspan.

Delivery

Sublime customer service is important to us. Part...

FAQ

What are the main benefits of this supplement?

Ultra B-Complex is engineered to optimise cellular energy production, enhance cognitive function, and support critical methylation pathways. It helps reduce fatigue, supports a healthy nervous system, and assists in the maintenance of normal homocysteine levels for cardiovascular health.

Why is 'methylation support' important?

Methylation is a biochemical process essential for DNA repair, detoxification, and neurotransmitter production. Many individuals have genetic variations (like MTHFR) that impair this process. We use the active, methylated forms of Folate (5-MTHF) and B12, alongside TMG and Choline, to bypass these genetic bottlenecks and ensure your body actually utilises the nutrients.

Are there any side effects associated with this supplement?

B-vitamins are water-soluble and highly safe. You will likely notice your urine turning a bright, neon yellow. This is a harmless and...

Customer Reviews

BE MORE JELLYFISH

The science of Longevity is growing at breakneck speed and tens of BILLIONS of dollars are being invested in solutions to help us all slow aging. But until 'Longevity Escape Velocity' has been achieved, we should all be more like Turritopsis Dohrnii jellyfish - which do not age - and we should invest in our long-term health with a healthy lifestyle, supported by longevity supplements.

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