L-Carnitine 1200mg

L-Carnitine is a small-molecule research compound — not a peptide. It is a quaternary ammonium amino-acid derivative essential for the transport of long-chain fatty acids across the mitochondrial inner membrane for β-oxidation. The molecule was identified in muscle tissue in the 1900s and has been a research staple in mitochondrial metabolism ever since. We supply L-Carnitine because the longevity-research community studies it alongside other mitochondrial-targeted compounds like MOTS-C and SS-31; the same independent third-party testing discipline we apply to peptides applies here. This guide explains what L-Carnitine is, the research context, and how its quality is independently verified.

L-Carnitine is (R)-3-hydroxy-4-(trimethylammonio)butanoate, a quaternary ammonium compound with the empirical formula C7H15NO3 and a molecular weight of approximately 161.2 g/mol. The 'L' designates the biologically active enantiomer; the D-enantiomer is essentially inactive and at higher concentrations can competitively inhibit L-Carnitine transport — making L-stereochemistry verification an essential quality criterion. It is supplied as a hygroscopic crystalline solid for laboratory reconstitution.

L-Carnitine is sold strictly for laboratory and research use. It is not approved by the FDA or any other regulatory body for human or veterinary use in this form, and nothing in this guide constitutes guidance for human administration.

Published research on L-Carnitine centers on its role as the obligatory shuttle molecule in mitochondrial fatty-acid β-oxidation. Long-chain fatty acids cannot cross the mitochondrial inner membrane unaided; they must be esterified to L-Carnitine on the outer side by carnitine palmitoyltransferase I (CPT1), translocated across the inner membrane by the carnitine-acylcarnitine translocase, then de-esterified on the matrix side by CPT2. Without L-Carnitine, mitochondrial fatty-acid metabolism halts. The molecule is studied across cardiac, skeletal-muscle, and hepatic contexts where fatty-acid oxidation is the dominant energy pathway, and in metabolic-disease research where carnitine-pool dynamics shift. Researchers should evaluate primary sources in their specific subfield directly.

L-Carnitine quality verification has a stereochemistry component that does not appear for most other small molecules. Every batch of MHS Longevity L-Carnitine is submitted to an independent third-party laboratory before release:

L-Carnitine as a crystalline solid is more thermally stable than most peptides — room-temperature storage of the sealed solid is acceptable, though refrigerated storage extends shelf life. The compound is hygroscopic and will absorb atmospheric moisture if left exposed; tightly sealed containers and minimal exposure to humid air preserve dry-state stability. Reconstituted solutions are typically held at 2–8°C and used within the documented stability window. Standard handling precautions for small-molecule research compounds apply.