--- title: "Where to Buy L-Carnitine in the UK — 9 Trusted Suppliers - PeptideSupermarket®" description: "Where to buy L-Carnitine in the UK: compare 9 trusted suppliers from £6.00. Lab-tested options, live pricing and a 30-day price history." url: "https://peptidesupermarket.co.uk/where-to-buy-l-carnitine" site: "PeptideSupermarket®" country: "United Kingdom" --- [Home](https://peptidesupermarket.co.uk) › [Peptides](https://peptidesupermarket.co.uk/compare-peptide-prices-uk) › [L-Carnitine](https://peptidesupermarket.co.uk/peptide/l-carnitine) › Where to Buy L-Carnitine in the UK UK Buyer's Guide · October 2026 # Where to Buy L-Carnitine in the UK Looking for where to buy **L-Carnitine** in the UK? This guide compares 9 trusted suppliers, with live prices from **£6.00** and a 30-day price history so you can buy with confidence. Cheapest Price £6.00 at Opti-Gen Peptides Average Price £25.85 600mg dosage Highest Price £51.53 at Biolabs UK Suppliers 9 compared ### 30-Day L-Carnitine Price Trend Based on the 600mg dosage — cheapest, average & highest listed price. Cheapest Average Highest £54 £34 £15 28 Sep 12 Oct 27 Oct 30-Day Low £15.00 Average £26.30 30-Day High £53.99 ## The best places to buy L-Carnitine in the UK There are 9 UK suppliers stocking L-Carnitine in our index, with prices for the 600mg dosage ranging from **£6.00** up to **£51.53** (average **£25.85**). [Opti-Gen Peptides](https://peptidesupermarket.co.uk/suppliers/opti-gen-peptides) is the cheapest option at the time of writing, working out at roughly £0.01/mg. The supplier cards above highlight a few vendors we'd shortlist, and you can open any supplier's profile to read their full delivery, payment and lab-testing details before you buy. ## What to look for in a L-Carnitine supplier Buying research peptides is only worthwhile if you can trust what arrives. We'd prioritise suppliers that offer: - **Third-party lab testing** — an independent certificate of analysis confirming purity and concentration. - **UK-based dispatch** — faster delivery, no customs delays, and easier returns. - **Transparent pricing** — clear per-vial and per-mg costs, with no surprises at checkout. - **Verified reviews** — a track record from real customers you can actually check. - **Secure payment and clear policies** — reputable vendors are upfront about shipping times and refunds. ## How much does L-Carnitine cost? Expect to pay around **£25.85** for the 600mg dosage, though shopping around can bring that down to **£6.00**. At the top end, Biolabs charges up to **£51.53** — a spread of about **88%** across the market. The price table and 30-day trend above show exactly where L-Carnitine is cheapest today and whether prices are moving. ## How to store L-Carnitine after delivery Most research peptides ship lyophilised (freeze-dried) and should be kept cool and dark. Once reconstituted, storage in a fridge and use within the supplier's recommended window helps preserve integrity. Always follow the handling guidance provided by your chosen vendor. ## Frequently asked questions **Is it legal to buy L-Carnitine in the UK?** Research peptides are sold for in-vitro laboratory use only. It's your responsibility to ensure any purchase complies with the law in your jurisdiction. **How quickly will L-Carnitine arrive?** Most UK suppliers dispatch within one to three working days — check each supplier's profile for their exact delivery estimate. > For in-vitro laboratory research use only. We compare suppliers — we don't sell, supply or ship L-Carnitine or any other peptide. ## Compare all L-Carnitine suppliers Choose a dosage to see live prices, cheapest first. Compare dosage | # | Supplier | Price | Per mg | Stock | Lab Tested | | | --- | --- | --- | --- | --- | --- | --- | | 1 | 95 Confidence [Alpha Peptides®](https://peptidesupermarket.co.uk/suppliers/alpha-peptides) Cheapest ★ 5.0 | £20.00 | £0.03 | In Stock | — | [View Deal](https://peptidesupermarket.co.uk/go/019da535-b26d-7358-a60d-c9dcd5653969?loc=keyword_price_table) | | 2 | 87 Confidence [PeptideStock](https://peptidesupermarket.co.uk/suppliers/peptidestockcouk) ★ 4.6 | £17.99 | £0.03 | Out of Stock | — | [View Deal](https://peptidesupermarket.co.uk/go/01a16b3d-b349-714a-986e-954b5451e38e?loc=keyword_price_table) | | 3 | 77 Confidence [Lucid Peptides](https://peptidesupermarket.co.uk/suppliers/lucid-peptides) | £17.95 | £0.03 | Out of Stock | — | [View Deal](https://peptidesupermarket.co.uk/go/019f5ed9-e20a-7011-bf78-520906b601ab?loc=keyword_price_table) | | 4 | 63 Confidence [Opti-Gen Peptides](https://peptidesupermarket.co.uk/suppliers/opti-gen-peptides) ★ 4.8 | £6.00 | £0.01 | In Stock | — | [View Deal](https://peptidesupermarket.co.uk/go/01a09135-eca3-72a8-9191-1c67a115eaf1?loc=keyword_price_table) | | 5 | 50 Confidence [Precision Peptide](https://peptidesupermarket.co.uk/suppliers/precision-peptide) ★ 5.0 | £15.00 | £0.03 | In Stock | — | [View Deal](https://peptidesupermarket.co.uk/go/019f52e5-a733-73d3-885d-e9a93e0950da?loc=keyword_price_table) | | 6 | 50 Confidence [Precision Peptide](https://peptidesupermarket.co.uk/suppliers/precision-peptide) ★ 5.0 | £45.00 | £0.08 | In Stock | — | [View Deal](https://peptidesupermarket.co.uk/go/019f52e5-a7b5-727e-8956-0fc618207c95?loc=keyword_price_table) | | 7 | 50 Confidence [Absolute BioLab](https://peptidesupermarket.co.uk/suppliers/absolute-biolab) | £15.00 | £0.03 | In Stock | — | [View Deal](https://peptidesupermarket.co.uk/go/019f9cfe-a79b-71f1-80b9-5ade6c002374?loc=keyword_price_table) | | 8 | 50 Confidence [Genopept](https://peptidesupermarket.co.uk/suppliers/genopept) | £20.00 | £0.03 | In Stock | — | [View Deal](https://peptidesupermarket.co.uk/go/01a0f557-d08a-7306-8fc1-897ac95ec3f2?loc=keyword_price_table) | | 9 | 50 Confidence [Research Peptides](https://peptidesupermarket.co.uk/suppliers/research-peptides) | £49.99 | £0.08 | In Stock | | [View Deal](https://peptidesupermarket.co.uk/go/019ea82b-69ec-7208-8061-5ddf43080a98?loc=keyword_price_table) | | 10 | 50 Confidence [Biolabs](https://peptidesupermarket.co.uk/suppliers/biolabs) | £51.53 | £0.09 | In Stock | — | [View Deal](https://peptidesupermarket.co.uk/go/019f5cba-dd29-7258-b643-3d23bd0f1ba5?loc=keyword_price_table) | ## Recommended L-Carnitine suppliers Verified UK vendors we'd shortlist for L-Carnitine, based on price, reviews and lab testing. [Alpha Peptides®](https://peptidesupermarket.co.uk/suppliers/alpha-peptides) Best Price 95/100 £20.00 600mg - ★ 5.0 (4 reviews) [View profile](https://peptidesupermarket.co.uk/suppliers/alpha-peptides) [View deal](https://peptidesupermarket.co.uk/go/019da535-b26d-7358-a60d-c9dcd5653969?loc=keyword_spotlight) [PeptideStock](https://peptidesupermarket.co.uk/suppliers/peptidestockcouk) Runner-up 87/100 £17.99 600mg - ★ 4.6 (14 reviews) - Trading since 2026 - 1–2 day UK delivery - Lab tested by Peptideverify [View profile](https://peptidesupermarket.co.uk/suppliers/peptidestockcouk) [View deal](https://peptidesupermarket.co.uk/go/01a16b3d-b349-714a-986e-954b5451e38e?loc=keyword_spotlight) [Lucid Peptides](https://peptidesupermarket.co.uk/suppliers/lucid-peptides) Also worth a look 77/100 £17.95 600mg [View profile](https://peptidesupermarket.co.uk/suppliers/lucid-peptides) [View deal](https://peptidesupermarket.co.uk/go/019f5ed9-e20a-7011-bf78-520906b601ab?loc=keyword_spotlight) ### More ways to buy L-Carnitine - [L-Carnitine full price comparison](https://peptidesupermarket.co.uk/peptide/l-carnitine) - [Best L-Carnitine Prices](https://peptidesupermarket.co.uk/best-l-carnitine-prices) - [Cheapest L-Carnitine Prices](https://peptidesupermarket.co.uk/cheapest-l-carnitine-prices) - [Buy L-Carnitine Online UK Cheap](https://peptidesupermarket.co.uk/buy-l-carnitine-online-uk-cheap) - [L-Carnitine Price Comparison](https://peptidesupermarket.co.uk/l-carnitine-price-comparison) - [L-Carnitine UK Supplier](https://peptidesupermarket.co.uk/l-carnitine-uk-supplier) - [L-Carnitine For Sale](https://peptidesupermarket.co.uk/l-carnitine-for-sale) ### Compare prices for other peptides - [Retatrutide](https://peptidesupermarket.co.uk/where-to-buy-retatrutide) - [GHK-Cu](https://peptidesupermarket.co.uk/where-to-buy-ghk-cu) - [BPC-157](https://peptidesupermarket.co.uk/where-to-buy-bpc-157) - [NAD+](https://peptidesupermarket.co.uk/where-to-buy-nad) - [Mots-C](https://peptidesupermarket.co.uk/where-to-buy-mots-c) - [Tirzepatide](https://peptidesupermarket.co.uk/where-to-buy-tirzepatide) ## Compare every L-Carnitine deal in one place Live prices from verified UK suppliers, updated continuously. 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