L-Carnitine
Also known as: Levocarnitine · L-3-hydroxy-4-trimethylaminobutyrate
An amino-acid-derived compound cited in the literature for its role in fatty-acid transport and energy metabolism.
L-Carnitine at a glance
| Name | L-Carnitine |
|---|---|
| Also known as | Levocarnitine, L-3-hydroxy-4-trimethylaminobutyrate |
| Category | Energy & metabolism |
| Type | Amino / injectable |
| Sequence | Amino acid derivative (quaternary ammonium compound) |
| Typical dose | Supplement figures are commonly cited around 500-2000 mg per day; not a recommendation |
| Frequency | Once or split through the day in cited use |
| Route | Oral supplement most commonly; an injectable prescription form exists for deficiency |
| Half-life | Reported on the order of hours; varies with formulation and route. |
Overview
L-Carnitine is a naturally occurring compound synthesized from lysine and methionine that plays a central role in shuttling long-chain fatty acids into mitochondria. It is available as a dietary supplement and, in a prescription form, for specific deficiency states; this entry is educational context only.
How it’s thought to work
- Commonly cited as transporting long-chain fatty acids across the mitochondrial membrane.
- Supports beta-oxidation for energy production in the literature.
- Reported to influence the acyl-CoA to CoA ratio in cells.
- Described as a factor in cellular energy substrate handling.
Researched uses
- Primary and secondary carnitine deficiency (prescription indication for levocarnitine)
- Studied for exercise and recovery endpoints
- Explored in the literature for cardiovascular and metabolic contexts
Commonly cited protocol
| Typical dose | Supplement figures are commonly cited around 500-2000 mg per day; not a recommendation |
|---|---|
| Frequency | Once or split through the day in cited use |
| Route | Oral supplement most commonly; an injectable prescription form exists for deficiency |
| Notes | Most often taken orally, so consumer injection-unit math does not apply. |
Reconstitution
Typically taken orally as a supplement, so vial reconstitution and insulin-syringe unit conversions do not apply.
Cautions
- Available as a dietary supplement; the injectable form is prescription-only for deficiency states.
- High oral intake has been associated with gastrointestinal effects in the literature.
- Supplement quality and labeling accuracy vary by manufacturer.
- Educational context only; not medical advice.
L-Carnitine FAQ
What is L-Carnitine?
An amino-acid-derived compound cited in the literature for its role in fatty-acid transport and energy metabolism.
How does L-Carnitine work?
Commonly cited as transporting long-chain fatty acids across the mitochondrial membrane. Supports beta-oxidation for energy production in the literature. Reported to influence the acyl-CoA to CoA ratio in cells. Described as a factor in cellular energy substrate handling.
What is L-Carnitine used for?
Primary and secondary carnitine deficiency (prescription indication for levocarnitine); Studied for exercise and recovery endpoints; Explored in the literature for cardiovascular and metabolic contexts.
What is a typical L-Carnitine dose?
Supplement figures are commonly cited around 500-2000 mg per day; not a recommendation, Once or split through the day in cited use, Oral supplement most commonly; an injectable prescription form exists for deficiency. This is a commonly cited figure for context only, not medical advice.
How do you reconstitute L-Carnitine?
Typically taken orally as a supplement, so vial reconstitution and insulin-syringe unit conversions do not apply.
What is the half-life of L-Carnitine?
Reported on the order of hours; varies with formulation and route.