L-Carnitine (Injectable)Weight LossSafety Rating 8/10

Primary research areaFat metabolism enhancement

Research-literature reference data, NOT patient instructions. Not for human use. Consult a licensed clinician for any human application.

Research dose rangeInjectable: 500–2000 mg SC or IV, 3–5x/week. Often added to Lipo-C blends. Oral: 500–3000 mg/day (lower bioavailability).
AdministrationInjection / Oral
Safety8/10 · FDA-approved (Carnitor)
NCAA D1Permitted

Price Comparison

Compare vendors · per 500mg

5 vendors competing

VendorPrice$ / mgUpdated
Optimum FormulaBest $/mgCOA ✓ · 3P$22.49$24.99−10% · code PEPTIDEPRICES$0.0562May 14, 2026Buy →
BioLongevity LabsCOA ✓ · 3POut of stock$59.97$0.0999Apr 16, 2026Buy →
Liv Pure WellnessCOA ✓$120.00$0.10Apr 14, 2026Buy →
Liv Pure WellnessCOA ✓$75.00$0.13Apr 14, 2026Buy →
Behemoth LabzCOA ✓ · 3P$103.19$0.21May 14, 2026Buy →

Overview

About L-Carnitine

Mechanism of action

Amino acid derivative; essential transporter of long-chain fatty acids into mitochondrial matrix for beta-oxidation (fat burning); enhances mitochondrial energy production; antioxidant; reduces ammonia levels; enhances insulin sensitivity.

Safety profile

Generally very safe. High doses: fishy body odor (TMAO production), GI discomfort. IV: occasional nausea. Rare hypersensitivity. · FDA-approved for deficiency; fishy odor; GI side effects mild; very safe at therapeutic doses

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