- HPLC-assayed purity of ≥99%
- Certificate of analysis tied to your lot number
- Tracked EU delivery, dispatched the next working day
Tirzepatide + Vitamin B12
Dual GIP/GLP-1 agonist peptide combined with methylcobalamin in one vial
In stock2 formats available
€119Range €119 – €191
This listing is currently unavailable. Contact us and we will tell you when it is back or suggest an equivalent.
Ask about this listing or request its COA- FormLyophilized co-formulated powder, sealed glass vial with flip-off seal
- Research areasIncretin receptor signalling, energy balance and glycaemic models, cofactor co-formulation stability
For laboratory research use only. Sold exclusively for in-vitro laboratory research by qualified professionals. Not for human or veterinary use, and not a medicine, food, cosmetic or dietary supplement. Terms and Conditions
Overview
Key facts
Two well-understood components share this vial: tirzepatide, a 39-residue acylated agonist of both GIP and GLP-1 receptors, and methylcobalamin, the methylated coenzyme form of vitamin B12.
- Form
- Lyophilized co-formulated powder, sealed glass vial with flip-off seal
- Storage
- −20 °C lyophilized; 2–8 °C reconstituted, protected from light at all times
- Available sizes
- 10 mg · 20 mg
For research use only. Not for human consumption.
Two well-understood components share this vial: tirzepatide, a 39-residue acylated agonist of both GIP and GLP-1 receptors, and methylcobalamin, the methylated coenzyme form of vitamin B12. They are chemically unrelated and act through completely separate systems. Tirzepatide is a synthetic peptide built around a GIP backbone whose C20 fatty diacid chain gives it albumin binding and a long half-life in circulation; methylcobalamin is a deep-red cobalt corrinoid serving as cofactor for methionine synthase.
Such blends occur in compounding and research because the two parts address different variables of one experimental system: the incretin agonist drives the metabolic endpoints being studied, while B12 is a co-formulated cofactor that researchers may want to keep constant or manipulate. Combining them also changes the formulation science — the corrinoid is highly light-sensitive and colours the solution, which alters how the vial must be handled and how spectrophotometric data are read.
What sets this listing apart
Tirzepatide + Vitamin B12 combines Tirzepatide and Methylcobalamin (Vitamin B12) in one listing (10/20 mg). Components that are also sold on their own are linked below, each with its own specification and COA.
Same compound, other listings
Specifications
Identity
- Peptide class
- Acylated dual GIP/GLP-1 receptor agonist (twincretin), 39 residues
Supply & purity
- Form
- Lyophilized co-formulated powder, sealed glass vial with flip-off seal
- Available sizes
- 10 mg tirzepatide + B12; 20 mg tirzepatide + B12
Additional detail
- Component 1
- Tirzepatide — dual GIP/GLP-1 receptor agonist peptide
- Component 2
- Methylcobalamin — methylated coenzyme form of vitamin B12
- Purity (peptide)
- ≥99% by HPLC; lot-matched COA available
- CAS number (tirzepatide)
- 2023788-19-2
- Molecular formula (tirzepatide)
- C225H348N48O68
- Molecular weight (tirzepatide)
- 4813.45 g/mol
- CAS number (methylcobalamin)
- 13422-55-4
- Molecular formula (methylcobalamin)
- C63H91CoN13O14P
- Molecular weight (methylcobalamin)
- 1344.38 g/mol
- Research areas
- Incretin receptor signalling, energy balance and glycaemic models, cofactor co-formulation stability
- Storage
- −20 °C lyophilized; 2–8 °C reconstituted, protected from light at all times
Questions about Tirzepatide + Vitamin B12
What does the vial contain?
Tirzepatide — a 39-residue acylated dual GIP/GLP-1 receptor agonist — and methylcobalamin, vitamin B12's methylated coenzyme form. Unrelated chemically and acting via different systems, they are simply supplied together from one lyophilised preparation.
How is it different from plain tirzepatide?
The peptide and its specifications are identical. What differs is the added methylcobalamin, which tints the reconstituted solution, makes it very light-sensitive and disturbs UV-based peptide quantification unless the two are separated chromatographically.
Why is protection from light stressed so strongly?
Light breaks methylcobalamin's cobalt–carbon bond, and this photolysis is quick enough to change the preparation during normal bench work under bright lights. Amber containers, foil wrapping and minimal exposure are standard for any solution containing a corrinoid.
Which purity documents are available?
An independent lab HPLC-tests the peptide component to ≥99% purity, and the lot certificate covering identity and purity is available on request. Keep it with your study records so material and data stay linked.
In what sizes is it sold?
Two: 10 mg or 20 mg of tirzepatide, each with B12. The milligram figure refers to peptide content; the amount of cofactor is recorded in the lot documentation.
