Name: Vitamin B12 10mg (10 Vials / Kit)
Brand: HK Peptide
SKU: HK-B12-10
Price: 45.00 USD
Availability: InStock

What is Vitamin B12?

Vitamin B12 is the most structurally complex of the B vitamins, built around a central cobalt ion held within a corrin ring. It cannot be synthesized by humans or animals and must be obtained from the diet or supplementation, making it a common subject of nutritional and metabolic research.

How it is understood to work

B12 serves as an essential cofactor for two enzymes: methionine synthase, which supports methylation reactions and DNA synthesis, and methylmalonyl-CoA mutase, which participates in fatty acid and amino acid breakdown. Disruption of either pathway is studied for its downstream effects on hematopoiesis and neuronal maintenance.

Research status

B12 is widely studied in hematology (its role in preventing megaloblastic anemia), neuroscience (myelin maintenance and cognitive function), and one-carbon metabolism research. Its biology is well established relative to many research compounds, though ongoing studies continue to examine cellular uptake, methylation crosstalk, and status in specific research populations.

This listing: HK Peptide Vitamin B12

Brand: HK Peptide
Kit: 10 vials × 10 mg (100 mg in total)
Price per vial: $4.50
Price per mg: $0.45
Other strengths: 2mg $9.00

Lab testing

There is no public lab report for this listing yet. We can ask the brand for the batch COA before you order. Many buyers also split an independent HPLC test with others who bought the same batch.

Request the batch COA · How group testing works

Bought through escrow: the brand is only paid after you confirm delivery. If the parcel never arrives, or an independent test shows the wrong compound or a significant under-fill, open a claim before releasing payment.

Specifications

Compound: Vitamin B12
Also known as: Cobalamin
Class: Water-soluble B-vitamin (cobalt-containing)
Form: Lyophilized (freeze-dried) powder
Per vial: 10mg
Type: Water-soluble cobalt-containing vitamin (cobalamin)
Stated purity: ≥99% (HPLC)
Appearance: White lyophilized powder

Handling & storage

Provided as a lyophilized powder; store sealed vials at -20C away from light, and refrigerate any reconstituted solution, using it within the timeframe set by the study protocol.

Concentration check: adding 2 ml of bacteriostatic water to one 10 mg vial gives 5 mg/ml. The Research Lab calculator in your dashboard works this out for any volume.

Questions

Why are there two pack sizes (2mg and 10mg)?

Both contain the same cobalamin compound at the stated purity; the difference is simply total mass per vial for different study-scale requirements.

Is this the same molecule found in over-the-counter B12 supplements?

It is the same cobalamin chemical class; research-grade material here is intended strictly for laboratory use and is not formulated, dosed, or labeled as a consumer supplement.

How much Vitamin B12 is in this kit?

10 vials of 10 mg each, so 100 mg in total. The lab testing section above shows what the brand’s tested vial actually contained.

For laboratory research use only. Not for human or veterinary use. Nothing on this page is medical advice.