L-Carnitine
Mitochondrial Fatty-Acid Transport Cofactor
Quaternary ammonium compound required for long-chain fatty-acid transport into mitochondria. Available in two concentrations and a 5-pack.
Fat Loss / Metabolic
Category
From $35.99
Price
Research
Grade
Price
From $35.99
✓ 10% off via PeptidesMuscle
Suggested Protocol
Research dosing typically runs 1-2 grams parenteral per session (2.5-5mL at 400mg/mL) for acute muscle-carnitine loading studies, or 500mg-1g daily for chronic protocols. Wall et al. (J Physiol 2011) showed that 80mg/kg IV carnitine with insulin co-infusion produced measurable muscle carnitine increase; without insulin, the increase was negligible due to sodium-dependent transport saturation.
L-Carnitine is a small quaternary ammonium compound — β-hydroxy-γ-trimethylaminobutyric acid, MW 161 Da. It is not a peptide, not an incretin, and not a receptor agonist. It is a biochemical substrate: specifically, the obligate cofactor used by carnitine palmitoyltransferase-1 (CPT-1) to shuttle long-chain fatty acyl-CoA species across the mitochondrial inner membrane for β-oxidation. No carnitine means no long-chain fat oxidation. That is the entire mechanistic basis for its presence in the fat-loss category.
Available Sizes
Specifications
| Product | L-Carnitine |
|---|---|
| Category | Fat Loss / Metabolic |
| Format | Lyophilized powder |
| Price | From $35.99 |
Study-Observed Effects
Quaternary ammonium compound — not a peptide, not a GLP-1 analog
CPT-1 substrate enabling long-chain fatty-acyl-CoA mitochondrial import
400mg/mL standard-concentration solution format for injection-route research
Parenteral route bypasses ~80% first-pass hepatic extraction that limits oral absorption
Wall & Stephens (Nottingham) literature on muscle carnitine loading
Endogenous cofactor — research subjects already produce 75% of physiological demand
Standard Protocol
Research dosing typically runs 1-2 grams parenteral per session (2.5-5mL at 400mg/mL) for acute muscle-carnitine loading studies, or 500mg-1g daily for chronic protocols. Wall et al. (J Physiol 2011) showed that 80mg/kg IV carnitine with insulin co-infusion produced measurable muscle carnitine increase; without insulin, the increase was negligible due to sodium-dependent transport saturation.
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