How many vials are in a Vitamin B12 kit?

Every kit is 10 vials. The "5mg" label means 5 mg per vial, so a 5 mg kit gives 50 mg total, a 10 mg kit gives 100 mg total, and so on.

Is the price per vial or per kit?

Prices shown are for the full 10-vial kit. We always show the per-vial and per-mg breakdown so you can compare honestly.

What payment methods do you accept?

SEPA bank transfer (IBAN) is our default — secure, fee-free, instant confirmation. We can also send a secure card-payment link on request via WhatsApp.

Do you ship outside the EU?

Yes — UK, USA, Middle East, Asia and Australia. EU is fastest (5–18 business days). International is tracked and discreet. Some destinations are restricted — checkout will tell you.

How is purity verified?

Every batch is independently tested by HPLC and mass spectrometry. We can send the batch-specific COA for your order on request.

Is this intended for human use?

No. Vitamin B12 sold by Regena Peptides is a research compound supplied strictly for in-vitro laboratory investigation by qualified professionals. Not for human or veterinary use.

Available documentation

Tracked worldwide shipping

Secure bank transfer

Research use only

Metabolic · Research kit

Vitamin B12laboratory reference kit

aka Methylcobalamin / Cyanocobalamin

Kit of 10 vials

Cobalamin cofactor used in methylation and lipotropic research.

Class: Cobalamin cofactor
Half-life: ~6 days (systemic)
Kit: 10 vials
Use: Research only

Kit of 10 vials · 10 ml per vial

€239.00

€23.90 per vial

Sold as 10-vial kits · minimum order

We don't sell single vials. Every order is a sealed 10-vial research kit with the size and full kit price shown before ordering.

✓ Batch documentation — ask for documentation matching the batch available to order.
✓ Clear format — the selected vial size, vial count and total kit price stay visible before adding to cart.

Quantity

Every Vitamin B12 option — one tap to send us the list10 ml kit (10 vials) — €239.00Tap to open WhatsApp with every option already typed — we'll tell you which kit fits your research, and suggest anything else worth looking at.

✓ Sealed 10-vial kit (small glass bottles, lyophilised powder)
✓ Ask for the Certificate of Analysis available for this batch
✓ Tracked worldwide shipping from Germany, the USA or China · allow 5–18 business days from tracking
! You'll also need bacteriostatic water to mix your peptides

DocumentationAsk before ordering
Tracked delivery5–18 business days
Research use onlySee policy

Secure checkout · Wise card and bank-transfer options · Germany, USA or China fulfilment

Estimated delivery

Choose your country to see a delivery estimate.

Questions about Vitamin B12? Message us about available sizes and documentation.

Payment options at checkout. Choose Wise or Monzo card payment, or pay by SEPA / international bank transfer.

Tracked worldwide shipping. Discreet packaging from Germany, the USA or China; allow 5–18 business days after tracking is issued. Shipping details.

Batch test in progress. Ask us on WhatsApp for the current batch report, or browse the COA library.

Read our purity policy or contact us before ordering.

View full Vitamin B12 buyer page →

€ Price per mg — honest breakdown

Every Vitamin B12 kit ships as 10 vials. Here's the exact maths so you can see which strength gives you the most peptide per euro. Larger kits are usually significantly cheaper per mg.

Kit price

€239.00

0 mg × 10 vials

Per vial

€23.90

€239.00 ÷ 10 vials

Total mg in kit

0 mg

0 mg × 10

Per mg

€0.00

€239.00 ÷ 0 mg

What is Vitamin B12?

Vitamin B12 (cobalamin) is an essential cofactor used in laboratory research as a reference compound for one-carbon and propionate metabolism, and as a co-component of lipotropic research blends.

Mechanism of action

Cofactor for methionine synthase and methylmalonyl-CoA mutase in one-carbon and propionate metabolism.

Primary research areas

One-carbon metabolism, methylation and lipotropic research models.

Research notes

Standard component of MIC / Lipo-C lipotropic research blends.
Methylcobalamin and cyanocobalamin forms differ in cofactor handoff kinetics.

Third-party COA — testing in progress

Pending

The current Vitamin B12 batch is with our independent laboratory (Janoshik Analytical / VidaLabs) for HPLC + Mass Spectrometry analysis. Published COAs for previously-tested compounds are available in our full COA library.

Need the batch-specific COA for your order? Email inforegenapeptides@gmail.com — we'll send it as soon as the lab returns the report (typically 5–10 business days after shipment).

Why researchers buy from Regena

HPLC ≥99% purity

Every batch independently tested. Mass spectrometry verification on every research compound. COAs on request.

10-vial kits, properly sealed

Lyophilized peptide, rubber-stoppered amber vials, batch-coded. Stable for shipping; cold storage on arrival.

Germany · USA · China hubs

Tracked delivery from the best hub for your destination and available stock. Discreet, plain packaging.

Secure SEPA bank transfer

Encrypted checkout, verified IBAN. No card details stored. Card payment links available on request.

How ordering works

1
Pick your Vitamin B12 kit above
Each kit contains 10 vials. Choose your strength — bigger vials give you a lower €/mg.
2
Secure checkout in under 2 minutes
Add to cart, fill in shipping, get your IBAN and order reference instantly.
3
Pay by bank transfer (or card on request)
Bank transfer is fastest and fee-free. Need a card? Message us on WhatsApp and we'll send a payment link.
4
We ship within 24 hours
You get a tracking number by email + WhatsApp. EU delivery 5–18 business days. COA included on request.

Frequently asked questions

Research-use disclaimer

Information on this page is provided for educational and scientific reference purposes only. Vitamin B12 is a research compound intended for in-vitro laboratory investigation by qualified professionals. Nothing here constitutes medical advice, dosing guidance or a recommendation for human or veterinary use. Half-life and mechanism descriptions reflect published literature approximations.

Need protocol guidance?

Book a free 20-minute consultation — we'll map Vitamin B12 and adjacent reference compounds to your research goals.

Book consultation →

Add a solvent

Bacteriostatic Water
Kit of 10 × 10 ml vials · Standard solvent for most peptides
€149.00
Acetic Acid Kit
Kit of 10 × 3 ml vials (liquid) · For peptides that stay cloudy in BAC water
€149.00

Worldwide delivery from Fuengirola

Regena Peptides is based in Fuengirola, Spain and ships HPLC-verified research compounds worldwide — Europe, the UK and the USA — from our Germany, USA and China hubs, 5–18 business days from tracking.

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Keep reading

Vitamin B12 — shipped to research hubs worldwide

Same HPLC-verified Vitamin B12 batch, same COA — tracked delivery to laboratories and independent researchers across Europe, the UK, the USA and beyond. Pick a hub for local shipping window and currency notes.

View every research hub we ship to →Browse the full peptide library Site index

Customer reviews

What researchers say about Vitamin B12

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Cite this reference

Researching Vitamin B12?

Copy a ready-made citation or HTML link. Backlinks from research blogs, lab wikis and biohacker communities help others find verified peptide sources.

Regena Peptides. (2026-10-22). Vitamin B12 — HPLC-verified research peptide. https://regena.app/peptides/vitamin-b12

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