Name: L-Carnitine 500mg 10ml (10 Vials / Kit)
Brand: HK Peptide
SKU: HK-LC500
Price: 70.00 USD
Availability: InStock

What is L-Carnitine?

L-Carnitine is synthesized endogenously from the amino acids lysine and methionine and is also obtained from the diet. It is supplied here as a sterile liquid solution rather than a lyophilized powder, reflecting its high aqueous solubility and stability compared with many peptide compounds.

How it is understood to work

L-Carnitine functions through the carnitine shuttle: carnitine palmitoyltransferase I converts long-chain fatty acyl-CoA to fatty acylcarnitine for transport across the inner mitochondrial membrane, where carnitine palmitoyltransferase II regenerates the acyl-CoA for beta-oxidation. This positions carnitine availability as a rate-influencing factor in mitochondrial fat oxidation.

Research status

L-Carnitine is studied extensively in metabolic and exercise physiology research, including fat oxidation, endurance capacity, and recovery from exercise-induced stress, as well as in models of mitochondrial and metabolic dysfunction. Its basic biochemistry is well established, and pharmaceutical-grade levocarnitine is also used clinically for defined carnitine-deficiency conditions, though the research use here is distinct from any clinical application.

This listing: HK Peptide L-Carnitine

Brand: HK Peptide
Kit: 10 vials
Price per vial: $7.00

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: L-Carnitine
Also known as: Levocarnitine
Class: Amino-acid derivative (quaternary ammonium compound)
Form: Pre-mixed solution
Per vial: 500mg 10ml
Molecular formula: C₇H₁₅NO₃
Molecular weight: 161.2 g/mol
Stated purity: ≥99% (HPLC)
Appearance: Clear sterile solution

Handling & storage

Supplied as a clear, sterile solution rather than a powder; store at 2-8C protected from light, and inspect each vial before use, discarding it if the solution appears cloudy or discolored.

Questions

Why is this L-Carnitine a liquid instead of a lyophilized powder like most peptides in this catalog?

L-Carnitine is a small, highly water-soluble molecule that is chemically stable in solution, so it is manufactured and supplied pre-dissolved rather than freeze-dried.

Is research-grade L-Carnitine the same molecule as over-the-counter carnitine supplements?

It is the same core compound, but this material is manufactured and tested to research-grade specifications for laboratory use and is not formulated or labeled as a dietary supplement.

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