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UK MADE | MADE BY SCIENTISTS | SUPERDOSED | VEGAN

Vitamin B12

2000mcg
The science says 2000mcgof cobalamin. Compared with high-street brandsHow others compare
Vitamin B12 per servingvs SUPERDOSED
SUPERDOSED100%2000mcgcobalaminFull dose
H&B50%1000mcg£21.69
Health benefits

What the evidence is strongest for

Energy support
5/5. Best if energy support is your main goal.Evidence: NIH ODS vitamin B12 fact sheet; deficiency guidance and oral treatment reviews.
Red blood cell support
5/5. Best if you also want red blood cell support.Evidence: NIH ODS vitamin B12 fact sheet; NHLBI B12-deficiency anemia summary.
Nerve support
5/5. Useful if you also want nerve support.Evidence: NIH ODS; StatPearls on B12 deficiency; oral vs intramuscular evidence.
Homocysteine metabolism
4/5. Useful if you also want homocysteine metabolism.Evidence: NIH ODS B12 fact sheet.
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Vitamin B12 is an essential nutrient for energy, nerves, and blood health. Ours is supplied as methylcobalamin, the body-ready form, and is most often chosen for:

  • Energy & fatigue — contributes to the reduction of tiredness and fatigue by supporting normal energy metabolism.
  • Nervous system — supports the normal function of nerves and psychological processes.
  • Red blood cell formation — essential for the production of healthy red blood cells and haemoglobin.
  • Immunity — contributes to the normal function of the immune system.

Take 1 capsule once daily, providing 2,000 µg methylcobalamin. Swallow with water, at any time of day, with or without food. Many people find it easiest to take with breakfast to support energy through the day. Consistent daily use is recommended for ongoing energy, nervous system, and blood health.

Ingredients: Vitamin B12 (methylcobalamin),
Naturally occuring sulphur derived from plants and found naturally in fruits and vegetable (MSM), vegetarian capsule (HPMC).

Free from: fillers, binders, stabilisers, GMOs, allergens.

Why methylcobalamin? Unlike synthetic cyanocobalamin, methylcobalamin is biologically active, naturally derived, and doesn’t need conversion in the body.

Clinical research shows that Vitamin B12 supplementation is effective for maintaining normal B12 status, preventing deficiency, and supporting energy and neurological function. Doses of 500–1,000 µg/day are commonly used in trials and clinical practice to correct or prevent deficiency (Andrès et al., 2010, Blood Rev). Higher-dose protocols — 2,000 µg/day and above — are frequently used when absorption may be limited, such as in older adults or those with low intrinsic factor (Berlin et al., 1968, Acta Med Scand; O’Leary & Samman, 2010, Nutrients).

Our formula provides 2,000 µg methylcobalamin daily — a research-backed, body-ready form that ensures optimal coverage even where absorption is compromised. This makes it more than sufficient to maintain B12 status and support energy, red blood cell formation, and neurological health.

Safety: Vitamin B12 is water-soluble and excess is excreted in urine. It is considered safe even at very high doses, with no upper intake limit set by EFSA. Very rare side effects (acne-like rash, headache) have been reported at extremely high intakes.

Vitamin B12 Health Benefits

🌱 Energy & Metabolism

Supports energy production and reduces tiredness by helping convert food into fuel.

🧠 Brain & Mood

Important for memory, focus, and mood balance, with links to reduced brain fog.

🩸 Red Blood Cell Formation

Helps prevent anemia by supporting healthy red blood cell production.

🧬 DNA & Cell Health

Essential for DNA synthesis and overall cell repair and renewal.

🦴 Nervous System Support

Maintains healthy nerves and may protect against long-term neurological decline.

🔵 SuperDosed™ Promise

At SuperDosed™, we use only high-dose, clinically backed ingredients — no gimmicks, just results.

Your Health in Trusted Hands!

See What The Experts Say About Vitamin B12

"your body is begging you for vitamin B12"

Dr Berg

"what starts happenign when you take a B12 supplement"

Dr Janine

"Signs your B12 is low"

Dr Sophie Shotter

"as soon as I supplemented B12 everything changed"

Jim Kwik

"B12 - you're probably deficient!"

Talking with Docs

not all supplements are made equally

SuperDosed means 20x the dose

What are those ingredients?

high-street shops need shelf stable products that last for years. That means you need nasty fillers.

20x the strength. Real Supplements.

  • ENERGY
    SUPPORT

  • BRAIN
    HEALTH

Everything You Need to Know!

Frequently Asked Questions

Most high-street brands underdose their products — you’ll see fancy labels, but the active ingredients are far below the levels used in real studies. Online, it’s even riskier: many cheap supplements are shipped directly from overseas suppliers (often China), with little transparency or quality control, so you can’t be sure what’s actually inside.

SuperDosed™ takes the opposite approach. Every formula is made in the UK, fully tested, and built at the same strength shown effective in human studies. Our products are vegan-friendly, free from unnecessary additives, and designed by Oxford-educated doctors with deep expertise in nutrition and clinical research.

Yes. Every formula is dosed at the same levels shown effective in human studies — not the token amounts you find in high-street brands.

Yes. All products are manufactured in the UK under strict quality and safety standards.

Supplements work gradually. Most research shows meaningful benefits after consistent daily use for 6–12 weeks, so give your body time to respond.

Yes — but international shipping is currently expensive. We’re expanding and will open branches in the EU and US over the coming year. Sign up to our newsletter to be the first to know when local shipping becomes available.

If you change your mind, you can return unopened products within 30 days for a full refund. For opened items, we can’t accept returns for safety reasons, but if there’s ever an issue with your order, our support team will put it right by you — just contact us.