--- title: "L-Carnitine Peptide UK - Compare Prices from 21 Suppliers - PeptideSupermarket®" description: "Compare L-Carnitine prices from 21 UK suppliers, from £6.00. Find the cheapest deals, read reviews and save money." url: "https://peptidesupermarket.co.uk/peptide/l-carnitine" site: "PeptideSupermarket®" country: "United Kingdom" --- [Home](https://peptidesupermarket.co.uk) › [Peptides](https://peptidesupermarket.co.uk/compare-peptide-prices-uk) › L-Carnitine Search # L-Carnitine Price Comparison Live prices from 21 UK suppliers, from £6.00, compared side by side so you never overpay. [GLP-1 & metabolic research](https://peptidesupermarket.co.uk/compare-peptide-prices-uk) Prices checked 10 hours ago We compare prices & may earn a commission. [Full disclosure](https://peptidesupermarket.co.uk/disclosure). Best Price £6.00 Average £33.85 Highest £72.50 You Could Save 92% 14 results 600mg Compare 14 prices for L-Carnitine. Cheapest: £6.00. Average: £33.85. | Compare | Supplier | Price | Price / mg | Stock | Delivery | Quality | Coupon | Visit | | --- | --- | --- | --- | --- | --- | --- | --- | --- | | | 95 Confidence [Alpha Peptides®](https://peptidesupermarket.co.uk/suppliers/alpha-peptides) ★★★★★ 5.0 (4) L-Carnitine | £20.00 | £0.03/mg | In Stock | Free over £100 | Lab Tested | — | Visit | | | 87 Confidence [PeptideStock](https://peptidesupermarket.co.uk/suppliers/peptidestockcouk) ★★★★★ 4.6 (14) L-Carnitine | £17.99 | £0.03/mg | Out of Stock | Free over £75 | Lab Tested | — | Visit | | | 77 Confidence [Lucid Peptides](https://peptidesupermarket.co.uk/suppliers/lucid-peptides) L-Carnitine 600mg | £17.95 | £0.03/mg | Out of Stock | Free | — | — | Visit | | | 63 Confidence [Opti-Gen Peptides](https://peptidesupermarket.co.uk/suppliers/opti-gen-peptides) Best ★★★★★ 4.8 (8) L-Carnitine 600mg | £6.00 | £0.01/mg | In Stock | Free | — | — | Visit | | | 50 Confidence [Precision Peptide](https://peptidesupermarket.co.uk/suppliers/precision-peptide) ★★★★★ 5.0 (1) L-Carnitine 600mg | £15.00 | £0.03/mg | In Stock | Free | — | — | Visit | | | 50 Confidence [Precision Peptide](https://peptidesupermarket.co.uk/suppliers/precision-peptide) ★★★★★ 5.0 (1) L-Carnitine 600mg | £45.00 | £0.08/mg | In Stock | Free | — | — | Visit | | | 50 Confidence [Absolute BioLab](https://peptidesupermarket.co.uk/suppliers/absolute-biolab) L-Carnitine 600mg | £15.00 | £0.03/mg | In Stock | Free over £100 | — | — | Visit | | | 50 Confidence [Genopept](https://peptidesupermarket.co.uk/suppliers/genopept) L-Carnitine 600mg | £20.00 | £0.03/mg | In Stock | Free over £200 | Lab Tested | — | Visit | | | 50 Confidence [mrpeptides](https://peptidesupermarket.co.uk/suppliers/mrpeptides) L-Carnitine 600mg | £35.00 | £0.06/mg | In Stock | Free over £100 | Lab Tested | — | Unavailable | | | 50 Confidence [Research Peptides](https://peptidesupermarket.co.uk/suppliers/research-peptides) L-Carnitine 600mg | £49.99 | £0.08/mg | In Stock | Free | Lab Tested | — | Visit | | | 50 Confidence [Biolabs](https://peptidesupermarket.co.uk/suppliers/biolabs) L-Carnitine 600mg | £51.53 | £0.09/mg | In Stock | Free | — | — | Visit | | | 50 Confidence [Biolabshopuk](https://peptidesupermarket.co.uk/suppliers/biolabshopuk) L-Carnitine 600mg | £53.99 | £0.09/mg | In Stock | Free | — | — | Unavailable | | | 50 Confidence [Biolabshopofficial](https://peptidesupermarket.co.uk/suppliers/biolabshopofficial) L-carnitine 600mg | £53.99 | £0.09/mg | In Stock | Free | — | — | Unavailable | | | 50 Confidence [Peptides Distro](https://peptidesupermarket.co.uk/suppliers/peptides-distro) L-Carnitine 600mg | £72.50 | £0.12/mg | In Stock | Free | — | — | Unavailable | More ways to compare L-Carnitine Different views of the same live UK pricing, tuned for how you like to shop. [Best L-Carnitine Prices Best prices ranked](https://peptidesupermarket.co.uk/best-l-carnitine-prices) [Cheapest L-Carnitine Prices Cheapest suppliers compared](https://peptidesupermarket.co.uk/cheapest-l-carnitine-prices) [Where to Buy L-Carnitine Full buyer's guide](https://peptidesupermarket.co.uk/where-to-buy-l-carnitine) [Buy L-Carnitine Online UK Cheap Today's hottest deals](https://peptidesupermarket.co.uk/buy-l-carnitine-online-uk-cheap) [L-Carnitine Price Comparison Live price dashboard](https://peptidesupermarket.co.uk/l-carnitine-price-comparison) [L-Carnitine UK Supplier Verified UK supplier directory](https://peptidesupermarket.co.uk/l-carnitine-uk-supplier) [L-Carnitine For Sale Browse listings for sale](https://peptidesupermarket.co.uk/l-carnitine-for-sale) Compare another peptide Search PeptideSupermarket® compares prices but doesn't sell products. More All purchases are made directly from third-party suppliers; your relationship is solely with them. We accept no liability for the quality, purity, or legality of any products listed. We may earn a commission when you click through to a supplier and make a purchase. This does not affect pricing information displayed. By using this site you accept responsibility for ensuring purchases comply with applicable laws in your jurisdiction. [Read our full disclosure](https://peptidesupermarket.co.uk/disclosure). ## L-Carnitine Profile Established FDA Approved Amino Acid Derivative | Fatty Acid Transporter ### Overview L-Carnitine is an amino acid derivative naturally produced in the body and essential for transporting long-chain fatty acids into mitochondria for energy production. Injectable forms bypass digestive absorption limitations of oral supplements. ### Mechanism of Action Acts as a carrier molecule, shuttling long-chain fatty acids across the inner mitochondrial membrane via the carnitine palmitoyltransferase (CPT) system. This is the rate-limiting step in fatty acid oxidation for energy production. ### Key Benefits - Enhanced fatty acid transport to mitochondria - Improved energy production from fats - Better bioavailability than oral forms - Support for exercise recovery - Potential cognitive benefits ### Quick Stats Typical Dose 50-200mg daily Frequency Once daily or pre-workout Cycle Duration 8-16 weeks (can be used continuously) Storage Lyophilized: -20°C; Reconstituted: 2-8°C for 2-4 weeks ## Molecular Information Molecular Weight 161.20 Da Type Quaternary ammonium compound Half-Life ~2-3 hours (injectable) ## Research Indications The following information is derived from published scientific literature and is provided for educational and research reference purposes only. It does not constitute medical advice, diagnosis, or treatment recommendations. These peptides are not approved for human use and are sold exclusively for in-vitro laboratory research. Metabolic Performance Clinical Uses ## Dosing Protocols ### injectable Subcutaneous or intramuscular injection provides superior bioavailability compared to oral supplementation, which is limited to ~15-20% absorption. | Goal | Dose | Frequency | Route | | --- | --- | --- | --- | | Standard Protocol | 50-100mg | Daily | SubQ | | Advanced Protocol | 100-200mg | Daily | SubQ or IM | | Pre-Workout | 100-200mg | 30-60 min before exercise | SubQ | #### Key Tips - ~100% bioavailability vs ~15-20% oral - Rapid absorption - Precise dosing control Reconstitution Instructions ## Peptide Interactions #### Thyroid Hormones Monitor L-Carnitine may affect thyroid hormone action. Those on thyroid medication should monitor levels. #### Anticoagulants Monitor May enhance effects of warfarin and similar medications. ## What to Expect Immediate Injectable form provides rapid absorption within 30-60 minutes Week 1-2 Potential improvements in energy and exercise capacity Week 4-8 Cumulative benefits on fat metabolism and recovery Week 8-16 Full metabolic optimization when combined with exercise ## Side Effects & Safety #### Common Side Effects - Injection site reactions - Mild nausea - Body odor (fishy smell at high doses) #### Monitoring - Generally well-tolerated with established safety profile - FDA-approved for carnitine deficiency - Monitor thyroid function if on thyroid medication #### Stop Signs - Allergic reactions (rare) - Severe gastrointestinal distress - Unusual muscle weakness #### Contraindications - Seizure disorders (may lower seizure threshold) - Hypothyroidism (may affect thyroid function) - Allergy to carnitine products ## Quality Checklist #### Good Signs - White crystalline powder - Clear, colorless solution after reconstitution - Certificate of Analysis with purity testing #### Warning Signs - Should dissolve completely without residue #### Bad Signs - Discolored powder - Cloudy or particulate solution - Strong unusual odor ## Research & References ### Key References 1. 2018 #### L-Carnitine Supplementation and Exercise Meta-analysis showing modest benefits of L-carnitine on exercise performance and recovery markers. 2. 2012 #### Carnitine Metabolism and Function Comprehensive review of carnitine's role in fatty acid transport and energy metabolism. [Search PubMed for L-Carnitine](https://pubmed.ncbi.nlm.nih.gov/?term=%28%22L-Carnitine%22%20OR%20%22Levocarnitine%22%20OR%20%22L-Carnitine%20Injectable%22%20OR%20%22Carnitine%22%29) --- *Add `.md` to any page URL on peptidesupermarket.co.uk for its Markdown version. Index of the site: https://peptidesupermarket.co.uk/llms.txt - full text: https://peptidesupermarket.co.uk/llms-full.txt.*