Peptide Schedule
L-CarnitineSmall moleculeNo amino acid sequence. Icon reflects category theme only.L-Carnitine Dosage Calculator
L-Carnitine is a naturally occurring amino acid derivative that plays a central role in shuttling long-chain fatty acids into the mitochondria for beta-oxidation — the process your cells use to turn stored fat into usable energy.
250mcg · Daily
Summary: Add 0mL BAC water to your 1000mg vial. Draw to < 0.1 units on a U-100 syringe for a 250mcg dose. This vial will last 0 doses.
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L-Carnitine Pharmacokinetics
Pharmacokinetics — Active Dose Over Time
t½ = ~17 hoursDisclaimer: This curve is a simplified first-order exponential decay model. Actual pharmacokinetics vary based on injection site, individual metabolism, body composition, and other factors. Half-life values are approximate and based on available preclinical and clinical literature. Many research peptides lack formal human pharmacokinetic studies. This is for educational purposes only — not medical advice.
L-Carnitine Dosing Protocol
| Level | Dose / Injection | Frequency |
|---|---|---|
| Beginner | 250mg | Daily |
| Moderate | 500mg | Daily |
| Aggressive | 1000mg | Daily |
Note: Pre-filled injectable solution (200 mg/mL) — no reconstitution needed. FDA-approved as Carnitor for primary and secondary carnitine deficiency. Compounded injectable versions commonly available at 500 mg/mL in 30 mL vials. Oral bioavailability is only 15-18%, which is why injectable administration is strongly preferred for clinical effect.
About L-Carnitine
L-Carnitine is a naturally occurring amino acid derivative that plays a central role in shuttling long-chain fatty acids into the mitochondria for beta-oxidation — the process your cells use to turn stored fat into usable energy. Your body makes it from lysine and methionine in the liver and kidneys, and you get some from red meat and dairy. But endogenous production and dietary intake don't always keep up with demand, especially during intense exercise or caloric restriction. The FDA approved injectable levocarnitine (brand name Carnitor) back in 1999 for treating primary and secondary carnitine deficiency. That's the clinical use case. But L-Carnitine injections have gained traction in wellness and body composition circles because of a straightforward pharmacokinetic reality: oral supplements have a bioavailability of only 15-18%, while injectable delivery bypasses the gut entirely and achieves 100% bioavailability. At oral doses above 2 grams, absorption actually gets worse because intestinal transporters saturate. A 2020 meta-analysis of 37 randomized controlled trials found that L-Carnitine supplementation reduced body weight by an average of 1.21 kg compared to placebo, with more pronounced effects in overweight and obese individuals. The weight loss isn't dramatic on its own — nobody's losing 20 pounds from carnitine alone — but the effect is real and additive when stacked with caloric deficit and exercise. A separate dose-response analysis suggested 2,000 mg per day as the sweet spot for measurable fat loss effects. One thing worth knowing: about 76% of an injected dose gets excreted through the kidneys within 24 hours. The body tightly regulates circulating carnitine levels through renal reabsorption, which becomes less efficient as plasma concentrations rise. This means you're not building up indefinitely — the system has a built-in ceiling. That same renal clearance is why L-Carnitine is generally well tolerated, but also why consistent daily dosing matters more than occasional large boluses.