L-Carnitine is a botanical extract derived from Biosynthetic from lysine & methionine; also from red meat, standardized to L-Carnitine (pure). With CAS registry number 541-15-1, this ingredient belongs to the Fat Oxidation & Thermogenesis category of weight management actives. L-Carnitine is the essential cofactor for transporting long-chain fatty acids across the inner mitochondrial membrane for β-oxidation (fat burning). Without carnitine, fatty acids cannot enter mitochondria. The carnitine shuttle (CPT I → translocase → CPT II) is the rate-limiting step for fat oxidation. L-Carnitine is the "fat transporter" — fundamental to any weight management formula. As a B2B manufacturer, Shaanxi Baisifu Biological Engineering Co., Ltd. supplies L-Carnitine in bulk quantities with full Certificate of Analysis (COA), ensuring consistent L-Carnitine (pure) content and regulatory compliance for dietary supplement, functional food, and nutraceutical applications.
Standard specifications for L-Carnitine bulk supply from Baisifu:
L-Carnitine is the essential cofactor for transporting long-chain fatty acids across the inner mitochondrial membrane for β-oxidation (fat burning). Without carnitine, fatty acids cannot enter mitochondria. The carnitine shuttle (CPT I → translocase → CPT II) is the rate-limiting step for fat oxidation. L-Carnitine is the "fat transporter" — fundamental to any weight management formula.
Level II. Studies consistently show improved fat oxidation during exercise. Weight loss without exercise is inconsistent (<0.5 kg). With aerobic exercise: 1-3 kg additional fat loss over 12 weeks (Poortmans & Wuyts, 2016).
Excellent safety profile. FDA GRAS. EFSA approved ≤2 g/day. Very high doses (>6 g/day) may cause oxidative stress and fishy body odor (trimethylamine). No hepatotoxicity or cardiovascular risk. Vegetarians often have suboptimal carnitine levels.
Shaanxi Baisifu Biological Engineering Co., Ltd. manufactures and supplies L-Carnitine (CAS 541-15-1) in bulk quantities for: • Dietary supplement manufacturers (capsules, softgels, tablets, powders)
• Functional food & beverage producers
• Nutraceutical brands seeking L-Carnitine (pure) standardized ingredient
• Cosmetics companies (anti-cellulite, metabolic support topical) Each batch includes full Certificate of Analysis (COA) with:
• L-Carnitine (pure) content verification (HPLC/UV)
• Heavy metals, microbial, moisture compliance
• Pesticide residue testing (where applicable)
• Stability data and shelf life confirmation Available forms: powder extract, oil-based softgel fill, microencapsulated powder
Minimum order: 1 kg (sample quantities available)
Lead time: 7–15 business days
Packaging: 25 kg/drum, double-layer PE bag + fiber drum, nitrogen flush available
Q1: Does L-Carnitine work without exercise?
L-Carnitine transports fatty acids into mitochondria, but without exercise to increase energy demand, fat burning is limited. Best results: 1-3 kg additional fat loss when combined with aerobic exercise 3+ times per week.
Q2: What form of L-Carnitine is best for weight loss?
L-Carnitine Tartrate — highest bioavailability, most stable, clinically validated. Acetyl-L-Carnitine adds cognitive benefits but costs more. Propionyl-L-Carnitine targets cardiovascular fitness. For pure weight management: Tartrate.
Q3: Can L-Carnitine be combined with Green Tea Extract?
Yes — this is the most popular and evidence-backed weight-loss stack. L-Carnitine ensures fatty acids reach mitochondria; EGCG activates AMPK to drive oxidation. Synergistic, not merely additive.
For complementary weight management formulations, consider combining L-Carnitine with: Green Tea Extract, Lotus Leaf Extract, Capsaicin, CLA. Multi-ingredient stacks targeting different mechanisms (lipase inhibition, AMPK activation, thermogenesis, appetite suppression) produce synergistic effects superior to single-ingredient products.
About Baisifu: Shaanxi Baisifu Biological Engineering Co., Ltd. (No.69, Jinye Road, Xi'an, 710065, Shaanxi, China | Tel: 0086-29-81110978) is a GMP/ISO-certified manufacturer of botanical extracts, food flavors, amino acids, peptides, and biopesticides with 1,000+ products exported to US/EU B2B markets.
Disclaimer: This content is for informational and B2B product development purposes only. L-Carnitine (CAS 541-15-1) is a raw ingredient for dietary supplement and functional food formulation, not a finished consumer product. Claims cited are from published research and regulatory approvals — they do not constitute medical advice or guarantee specific outcomes. Consult regulatory experts for target market compliance.
| Parameter | Specification |
|---|---|
| L-Carnitine | ≥99.8% |
| Form | Tartrate / Acetyl-L-Carnitine / Propionyl-L-Carnitine |
| Appearance | White crystalline powder |
| Solubility | Highly water-soluble |
| pH | 5.5-7.0 (1% solution) |
| Residue on Ignition | ≤0.5% |
| Heavy Metals | ≤10 ppm |
| Assay | 97-103% |
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