L-Carnitine
metabolicL-Carnitine is a research-use-only peptide. PeptideSource compares suppliers on purity, COAs, and price-per-mg.
Also known as: L-carnitine, Levocarnitine
L-Carnitine is a naturally occurring compound derived from lysine and methionine, primarily found in the liver and kidneys. It plays an essential role in energy production by transporting long-chain fatty acids into the mitochondria, where they are oxidized to produce energy. Research on L-Carnitine began with its potential in enhancing athletic performance and weight management. Early studies explored its effects on metabolism and muscle recovery, highlighting its importance in cellular energy processes. Beyond that, work continues on its broader applications in metabolic health and disease management. Today, it is primarily studied for its effects on:
- Enhancing athletic performance
- Weight management
- Metabolic health
- Muscle recovery
- Energy production
L-Carnitine is often studied for its potential benefits in various metabolic conditions.
PeptideSource editorial · Updated Jul 18, 2026
For research use only. PeptideSource does not sell peptides directly. Compare third-party supplier listings at your own discretion.
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| Shop now | Shop | Shop | Shop | Shop | Shop |
| Product | L-Carnitine /ml | L-Carnitine /ML | L-Carnitine - | L-carnitine 25 ml price per | L-Carnitine |
| Size | 500 mg | 400 mg | 600 mg | — | — |
| Price | $39.99 | $36.00 | $61.00 | $59.99 | $49.00 |
| Price/mg | $0.08/mg | $0.09/mg | $0.10/mg | — | — |
| Price change | 0% (10d) | 0% (16d) | 0% (10d) | 0% (16d) | 0% (10d) |
| Stock | In stock | Out of stock | In stock | In stock | In stock |
| Shipping | UPS 2nd Day Air | 2–5 days | Same-day dispatch before 1PM PST | 3–5 days | Same-day dispatch before 12PM EST |
| Reviews | 5.0(6) | 4.8(271) | — | 2.6(12) | 5.0(1) |
| Purity | 99% | — | 99% | 99% | — |
| COA | — | — | — | — | — |
| Bulk discount | — | — | — | — | — |
