# Amino Blend (Glutamine · Arginine · Ornithine · Lysine)

> Sterile four-amino-acid solution supplied in a 30 mL multi-use research vial

All products are sold strictly for laboratory research use only. Not for human or veterinary use.

- Web page: https://peptidemedixeu.com/en/products/amino-blend/
- Brand: Peptide Medix EU
- Category: [Vitamins & Cofactors](https://peptidemedixeu.com/en/collections/vitamins-cofactors/)
- from €51 (EUR)

## Sizes and prices (EUR)

| Size | Price | SKU |
| --- | --- | --- |
| 30 mL | €51 | AMINO-BLEND-30-ML |

_Catalog prices at build time; the web page and checkout are authoritative._

## Specifications

- **Available size:** 30 mL
- **Components:** L-glutamine, L-arginine, L-ornithine, L-lysine
- **L-glutamine:** C5H10N2O3 · 146.14 g/mol · CAS 56-85-9
- **L-arginine:** C6H14N4O2 · 174.20 g/mol · CAS 74-79-3
- **L-ornithine:** C5H12N2O2 · 132.16 g/mol · CAS 70-26-8
- **L-lysine:** C6H14N2O2 · 146.19 g/mol · CAS 56-87-1
- **Concentrations:** Printed on the lot label for each amino acid
- **Preservative:** Benzyl alcohol, permitting multiple entries into the vial
- **Purity inputs:** Pharmaceutical-grade amino acids; lot-matched COA available
- **Research areas:** Nitrogen balance, urea cycle flux, GH secretagogue physiology, gut barrier and immune cell fuel studies
- **Storage:** 2–8 °C, protected from light; do not freeze
- **Preparation required:** None — supplied as a ready solution, no reconstitution step

## Description

The chemistry of each ingredient is thoroughly established: L-glutamine (C5H10N2O3, 146.14 g/mol), L-arginine (C6H14N4O2, 174.20 g/mol), L-ornithine (C5H12N2O2, 132.16 g/mol) and L-lysine (C6H14N2O2, 146.19 g/mol). Every component is pharmaceutical-grade, and the finished solution contains a preservative, so the vial can be accessed several times over a study instead of being thrown away after one draw.

The four are linked by metabolism rather than by a common effect. Arginase splits arginine into ornithine and urea; ornithine is the substrate of ornithine decarboxylase and the polyamine route; lysine and arginine share, and compete for, the same cationic amino acid carriers; and glutamine is the main nitrogen donor supplying all of them. Research with blends like this addresses nitrogen balance and protein turnover, flux through the urea cycle and polyamine pathway, glutamine as an energy source for enterocytes and lymphocytes, and arginine as a benchmark stimulus in growth hormone secretagogue physiology. What you receive is one 30 mL preserved solution, ready to use without reconstitution, with each component's concentration printed on the lot label; because the vehicle contains benzyl alcohol, planning a vehicle-only arm is advisable.

## Frequently asked questions

### Why combine these four amino acids?

Because their pathways are intertwined. Arginase turns arginine into ornithine, ornithine supplies polyamine synthesis, lysine uses the same transporters as arginine, and glutamine acts as the main carrier of nitrogen in the body. Working with all four lets you study the network as a whole instead of one step in isolation.

### Can I get a certificate of analysis?

Yes. Every lot is documented for the identity and content of each amino acid and for the sterility of the finished solution. The certificate carrying your vial's lot number can be requested before or after you order.

### How do I store and handle the vial?

Store it upright at 2–8 °C, out of the light, and never freeze it. Wipe the stopper before each puncture, use a new sterile needle every time and write down the date of first use. Throw the vial away if the liquid turns cloudy or discoloured or if particles appear.

### Is there a preservative in the solution?

Yes — benzyl alcohol, which allows the vial to be punctured repeatedly over a study without the liquid supporting microbial growth. It also means the vehicle is biologically active, so include a vehicle-only control arm in your design.

### Which research areas use it?

Typical applications are nitrogen-balance and protein-turnover studies, work on glutamine as fuel for the gut barrier and immune cells, urea-cycle and polyamine flux experiments, and use as a reference stimulus arm in growth hormone secretagogue physiology.

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All products offered on this website are intended solely for in-vitro laboratory research and development by qualified professionals. They are not drugs, foods, cosmetics or dietary supplements, and are not intended to diagnose, treat, cure or prevent any disease. Products must not be introduced into humans or animals in any manner. By purchasing, you confirm that you are a qualified researcher and accept full responsibility for handling and storage in accordance with applicable laws.

Peptide Medix EU · https://peptidemedixeu.com/en/products/amino-blend/