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Vitamin B12 peptide: Metabolic research guide

In short: Vitamin B12 (cobalamin) as lyophilised research powder in 5 mg and 10 mg vials, sealed 10-vial packs. The organometallic cofactor of methionine synthase and methylmalonyl-CoA mutase. It is studied in preclinical (cell and animal) research and is supplied strictly for laboratory use, not for human or clinical use.

Not medical advice. Vitamin B12 is a research compound. This guide does not provide dosing, diagnosis, therapy recommendations, or claims about effects in humans.

Vitamin B12 at a glance

Compound type

Research peptide

Research category

Metabolic

Also known as

Vitamin B12, cobalamin, B12, B125, B1210

Evidence context

Preclinical / research use only

Regulatory status

Not an approved medicine. Supplied as a research compound

Last reviewed

14 October 2026

What to know first

Compound Vitamin B12 Research class Metabolic Catalog code B125 Available pack sizes 10 × 5 mg, 10 × 10 mg Storage Lyophilised powder: store in freezer (−20 °C), protected from light. Reconstituted: refrigerate 1–6 °C, away from sunlight.

Details and limits sit in the sections below. Research use only. No unsupported scientific claims are added here.

What Vitamin B12 is

Vitamin B12 is a cobalt-containing organometallic cofactor, studied for the reactivity of its cobalt-carbon bond and for the cellular machinery that converts and delivers it to the two mammalian enzymes that depend on it.

One-paragraph overview from our research datasheet. Still scientific, but faster to read than the full mechanism list below.

Vitamin B12 (cobalamin) as lyophilised research powder in 5 mg and 10 mg vials, sealed 10-vial packs. The organometallic cofactor of methionine synthase and methylmalonyl-CoA mutase.

Research contexts

Peer-reviewed papers discuss Vitamin B12 in specific lab settings. The points below reflect research questions, not health claims.

Research vs. personal use: Literature describes experiments in cells and animals. That is distinct from real-world use. Our products are for laboratory research only.

Typical study contexts

Mitochondrial stress, NAD+/redox biology and nutrient-sensing pathways.

Enzyme activity, gene expression or endurance-style animal readouts.

Cobalamin, the organometallic cofactor behind methionine synthase and methylmalonyl-CoA mutase.

Two vial strengths: 5 mg and 10 mg, in sealed 10-vial packs.

Reactive cobalt-carbon bond studied for methyl transfer and isomerisation chemistry.

Cellular processing studied through the MMACHC trafficking chaperone (decyanation and dealkylation).

Why Metabolic research matters

Researchers study these compounds for mitochondrial function and cellular energy stress. Ageing and metabolic disease models are common.

Mechanisms (technical review)

Our datasheet lists mechanistic themes from preclinical work. These are research endpoints, not health claims.

Cobalamin, the organometallic cofactor behind methionine synthase and methylmalonyl-CoA mutase

Two vial strengths: 5 mg and 10 mg, in sealed 10-vial packs

Reactive cobalt-carbon bond studied for methyl transfer and isomerisation chemistry

Cellular processing studied through the MMACHC trafficking chaperone (decyanation and dealkylation)

Supplied as a lyophilised powder with the chemical form left unassumed until an analytical report exists

Lab handling & preparation

Storage: Lyophilised powder: store in freezer (−20 °C), protected from light. Reconstituted: refrigerate 1–6 °C, away from sunlight.. See the storage guide.

Published pharmacokinetic context: Laboratory research material. No amount, schedule or administration guidance is published or recommended on this page.

Purity check: Use the COA reading guide and the published Certificates of Analysis (no current certificate is listed for Vitamin B12 yet).

Common Questions People Are Asking

What is Vitamin B12?

Vitamin B12, or cobalamin, is a cobalt-containing organometallic cofactor. It is the cofactor for two mammalian enzymes named in the cell-biology literature, methionine synthase and methylmalonyl-CoA mutase. It is supplied here as a laboratory research powder only.

Which form of vitamin B12 is it?

The supplier list names the compound as Vitamin B12 and does not state whether it is cyanocobalamin, methylcobalamin, hydroxocobalamin or adenosylcobalamin. This page does not assume one, and quotes no formula or molecular weight, because they differ by form. The form will be stated if an analytical report is published.

Is this a supplement or a medicine?

No. Vitamin B12 preparations are sold as medicines and supplements in many places; the material on this page is laboratory research material, is not either of those, and is not for human or veterinary use.

Is there a Certificate of Analysis for Vitamin B12?

Not yet. No independent analytical report has been published for this material, so no purity figure is quoted. If one is published it will appear on this page and on our COA page.

What do the cited studies show?

They describe how cobalamin-dependent enzymes use the cobalt-carbon bond and how the MMACHC chaperone removes cyanide or an alkyl group from a cobalamin so that it can be rebuilt into the active cofactors. They are biochemical and cell-biology studies and none tests the supplied material.

Is this page medical advice? Can I use Vitamin B12 for my health?

No, and no. This article is educational only. We do not provide dosing, medical recommendations, or health claims. Our products are sold strictly for laboratory research, not for personal use of any kind.

Where do I find Vitamin B12 specs, purity certificates and pricing?

Open the shop listing via “View product details.” There you will see concentration, purity grade, and available SKUs with current pricing. No current Certificate of Analysis is published for Vitamin B12 yet; published certificates are listed at /coa.

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Continue Vitamin B12 research

Analytical evidence, comparisons and current research for this compound. Research use only.

Research area Cognitive & longevity research The neuropeptide and longevity research area - nootropic and geroprotective peptides and related compounds studied in cognition… Explore the research area →

Scientific sources & further reading

Primary literature and registries for Vitamin B12, plus mainstream coverage of the peptide category. Research use only - not medical advice.

Databases & literature:

PubMed: peer-reviewed literature on Vitamin B12

ClinicalTrials.gov: registered studies on Vitamin B12

Vitamin B12: Wikipedia (search)

Peptides in the news:

WebMD: consumer health reference

BBC News: Health

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Sky News: “Can peptides make America healthy again?”

Sky News: “Inside the exploding US peptides craze” (video)

Sky News Australia: “Black market peptide trade explodes as influencers fuel uptick in use”

Sky News Australia: “Backyard peptide boom sparks alarm” (video)

Sky News Australia: “Oprah reveals struggle with shame of weight-loss drugs”

Ready to order? View full product specs

Access concentration, batch info, variants, and current pricing on our shop.

Also known as: Vitamin B12, cobalamin, B12, B125, B1210

PRECISION. PURITY. PERFORMANCE.

Research peptides. Third-party Certificates of Analysis (Janoshik Analytical & Freedom Diagnostics) are published on the website. Supplied strictly for laboratory research use.

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