01
7.5/ 10PepFinder Score
| Listing as named | Size | Price | Per mg | Stock | |
|---|---|---|---|---|---|
| L-Carnitine | 20ml | US$65.00 | — | In stock | On their site ↗ |
Prices as last checked on their site. The supplier confirms the final price and availability.
Market data · 22 suppliers · United States
Buy L-Carnitine USA : 22 suppliers prices compared
22 of the suppliers we track list L-Carnitine in or shipping to the US. They are ranked by PepFinder Score, which combines reliability, selection, pricing, delivery, support and customer reviews, and shown with the prices they list per mg. Stores based in the US come before those shipping in from abroad, whatever their score. We don't sell L-Carnitine, and we give no guidance on its use. Only prices listed in USD are shown here; stores that price in other currencies are on All regions.Also known as Levocarnitine, Carnitine. Stores list it under any of these names, and all of them are matched here.
Prices checked 25 Sept 2026 · 40 listings · 38 in stock · Other compounds sold by peptide stores
USD · 10 suppliersmedian US$0.10/mg
US$0.01/mgUS$0.28/mg
Each currency is shown separately; prices are never converted.
Regulatory status
Levocarnitine is a licensed prescription medicine for carnitine deficiency in the UK and US, and a legal food supplement at oral doses. Injectable vials sold as 'research' products are not approved medicines.
In United States the regulator is the U.S. Food and Drug Administration (FDA). Rules on buying, importing and using this product differ by country. Suppliers list it for laboratory research; nothing here is medical advice.
Showing 22 of 22 suppliers · prices in USD only, never converted
- 02
99PurityPeptides
US basedThird-party testing statedCOA page linked, not reviewed58 products tracked · Delivery dispatch promptly via UPS within 1 to 3 business days · Ships to 1 country
Pays byCardPayPal4.8 Trustpilot(57)7.2/ 10PepFinder ScoreFrom US$0.13/mg (600mg)
Listing as named Size Price Per mg Stock L-Carnitine 200mg – Research Grade Amino Acid Compound 200mg US$55.00 US$0.28/mg In stock On their site ↗ L-Carnitine 400mg – Research Grade Amino Acid Compound 400mg US$59.99 US$0.15/mg In stock On their site ↗ L-Carnitine 600mg – Research Grade Amino Acid Compound 600mg US$75.00 US$0.13/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 03
Pure Lab Peptides
US basedThird-party testing statedCOA page linked, not reviewed104 products tracked
Pays byCardBank transfer7.2/ 10PepFinder ScoreFrom US$0.12/mg (200mg)
Listing as named Size Price Per mg Stock L-Carnitine 200mg 200mg US$24.99 US$0.12/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 04
Panda Peptides
US basedThird-party testing statedCOA page linked, not reviewed51 products tracked · Ships to 1 country
4.8 Trustpilot(77)6.9/ 10PepFinder ScoreListing as named Size Price Per mg Stock L-Carnitine 60mg-ml-10ml US$24.99 — In stock On their site ↗ L-Carnitine 600mg-ml-10ml US$39.99 — Out of stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 05
Leo Research
US basedThird-party testing statedCOA page linked, not reviewed58 products tracked · Delivery Please allow 48 hours for final delivery resolution. · Ships to 1 country
Pays byCard6.5/ 10PepFinder ScoreListing as named Size Price Per mg Stock L-Carnitine 20ml 20ml US$50.00 — In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 06
Solas Science
US basedThird-party testing statedCOA page linked, not reviewed28 products tracked
Pays byCard4.7 Trustpilot(29)6.5/ 10PepFinder ScoreListing as named Size Price Per mg Stock L-Carnitine As listed US$40.00 — In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 07
Proxiva Peptides
US basedThird-party testing statedCOA page linked, not reviewed41 products tracked · Ships to 1 country
Pays byCardBank transfer6.4/ 10PepFinder ScoreListing as named Size Price Per mg Stock L – Carnitine As listed US$55.00 — In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 08
6.4/ 10PepFinder ScoreListing as named Size Price Per mg Stock L-CARNITINE As listed US$56.99 — In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 09
EZ Peptides
US basedThird-party testing statedCOA page linked, not reviewed46 products tracked · Ships to 1 country
Pays byCard6.3/ 10PepFinder ScoreListing as named Size Price Per mg Stock L-Carnitine 500mg-mL (10mL) 500mg US$48.00 — In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 10
6.3/ 10PepFinder ScoreListing as named Size Price Per mg Stock L-carnitine 25 ml (price per box) 25 ml US$59.99 — In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 11
NextGenPeps
US basedThird-party testing statedCOA page linked, not reviewed72 products tracked · Ships to 1 country
Pays byCardPayPal3.4 Trustpilot(23)6.2/ 10PepFinder ScoreListing as named Size Price Per mg Stock L-Carnitine As listed US$63.00 — In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 12
6.1/ 10PepFinder ScoreFrom US$0.11/mg (600mg)
Listing as named Size Price Per mg Stock L-CARNITINE 600mg 600mg US$64.95 US$0.11/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 13
Nationwide Peptides
US basedThird-party testing statedCOA page linked, not reviewed134 products tracked
Pays byCard3.8 Trustpilot(2)5.9/ 10PepFinder ScoreFrom US$0.08/mg (1200 mg)
Listing as named Size Price Per mg Stock L-Carnitine Peptide 200 mg US$45.00 US$0.23/mg In stock On their site ↗ L-Carnitine Peptide 400 mg US$50.00 US$0.13/mg In stock On their site ↗ L-Carnitine Peptide 600 mg US$53.00 US$0.09/mg In stock On their site ↗ L-Carnitine Peptide 1200 mg US$101.00 US$0.08/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 14
5.6/ 10PepFinder ScoreFrom US$0.10/mg (600mg)
Listing as named Size Price Per mg Stock L-Carnitine 600mg 600mg US$59.99 US$0.10/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 15
4.8/ 10PepFinder ScoreFrom US$0.01/mg (5000MG)
Listing as named Size Price Per mg Stock L-Carnitine 5000MG 5000MG US$60.00 US$0.01/mg Unknown On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 16
7.0/ 10PepFinder ScoreFrom US$0.02/mg (5000mg)
Listing as named Size Price Per mg Stock L-Carnitine 5000mg 5000mg US$77.00 US$0.02/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 17
Third-party testing statedCOA page linked, not reviewed82 products tracked · Ships to the US
Pays byCardBank transferCrypto6.3/ 10PepFinder ScoreFrom US$0.10/mg (600mg)
Listing as named Size Price Per mg Stock Buy L-Carnitine – 600mg 600mg US$61.00 US$0.10/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 18
6.1/ 10PepFinder ScoreFrom US$0.10/mg (600 MG)
Listing as named Size Price Per mg Stock L-CARNITINE 600 MG 600 MG US$60.00 US$0.10/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 19
Third-party testing statedCOA page linked, not reviewed283 products tracked · Ships to the US
Pays byCardCryptoPayPalWarning: Not confirmed as Limitless Life Nootropics Details
5.0/ 10PepFinder ScoreFrom US$0.08/mg (1200 mg)
Listing as named Size Price Per mg Stock L-Carnitine Peptide 200 mg US$45.00 US$0.23/mg In stock On their site ↗ L-Carnitine Peptide 400 mg US$50.00 US$0.13/mg In stock On their site ↗ L-Carnitine Peptide 600 mg US$53.00 US$0.09/mg In stock On their site ↗ L-Carnitine Peptide 1200 mg US$101.00 US$0.08/mg In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 20
Third-party testing statedCOA page linked, not reviewed63 products tracked · Ships to the US
4.6 Trustpilot(18)–PepFinder ScoreListing as named Size Price Per mg Stock L-Carnitine As listed US$35.00 — In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
- 21Third-party testing statedCOA page linked, not reviewed
53 products tracked · Ships to the US
Pays byBank transferCrypto–PepFinder ScoreListing as named Size Price Per mg Stock L-Carnitine 200mg/10ml | 10-Vial Kit | 2,000mg Total | Fatty Acid Oxidation Research 200mg US$190.00 — In stock On their site ↗ L-Carnitine 200mg/10ml | 20-Vial Kit | 4,000mg Total | Fatty Acid Oxidation Research 200mg US$330.00 — In stock On their site ↗ L-Carnitine 400mg/10ml | 10-Vial Kit | 4,000mg Total | Fatty Acid Oxidation Research 400mg US$210.00 — In stock On their site ↗ L-Carnitine 400mg/10ml | 20-Vial Kit | 8,000mg Total | Fatty Acid Oxidation Research 400mg US$370.00 — In stock On their site ↗ LC1200 L-Carnitine 1200mg/mL | 10-Vial Kit | Fatty Acid Oxidation Research 1200mg US$240.00 — In stock On their site ↗ LC2000 L-Carnitine 2000mg/mL | 10-Vial Kit | Fatty Acid Oxidation Research 2000mg US$270.00 — In stock On their site ↗ + 4 more on the full catalogue.
Prices as last checked on their site. The supplier confirms the final price and availability.
- 22Third-party testing statedCOA page linked, not reviewed
43 products tracked · Ships to the US
Pays byCardCrypto–PepFinder ScoreListing as named Size Price Per mg Stock L-Carnitine – Premium Research Compound As listed US$44.99 — In stock On their site ↗ Prices as last checked on their site. The supplier confirms the final price and availability.
Told when L-Carnitine gets cheaper in the US
Set a target price in USD and we check every validated listing daily. Free with an account.
At a glance · 25 Sept 2026
- Suppliers serving the US
- 22 list L-Carnitine, 38 listings in stock
- Price per mg (USD)
- US$0.01/mg to US$0.28/mg, median US$0.10/mg, across 18 listings from 10 suppliers
- Test certificates
- Not yet collected by PepFinder for L-Carnitine; check each supplier's site. How to read a COA
- Legal status in the US
- The FDA treats research peptides sold for human use as unapproved new drugs and has said in 2026 warning letters that research-use-only labels do not change that. Full summary with sources
What L-Carnitine is
L-Carnitine (levocarnitine) is a small amino-acid derivative that the body makes and that meat supplies, and its job is to carry long-chain fatty acids into mitochondria so they can be burned. It is a licensed prescription medicine for carnitine deficiency in the UK and the US, a legal food supplement at oral doses, and, in the form of injectable vials sold by peptide stores, an unlicensed injectable marketed for fat loss. It is not a peptide. The trial record shows a modest average weight loss of around a kilogram in overweight adults, a muscle carnitine rise that took months of oral dosing with carbohydrate, and a gut-bacteria concern about TMAO that is still being argued over. Read the full L-Carnitine guide, with the published research and references.
L-Carnitine market over time
The median listed price per mg across every tracked supplier listing L-Carnitine in each currency, recorded daily from validated listings only. Days with too few listings to publish are left out, not estimated. How we validate prices
USD · median per mg
No validated daily statistics yet. A trend appears once there is more than one day of data.
Catalogue changes, last 30 days
154 listings added · 0 withdrawn
- 25 Sept 2026Zenith BiopeptidesNew listing: L-CARNITINE 600MG (600MG)
- 25 Sept 2026Xcel PeptidesNew listing: L-Carnitine
- 25 Sept 2026Warrior PepsNew listing: L-Carnitine
- 25 Sept 2026Vital Core Researcher AccessNew listing: L-Carnitine
- 25 Sept 2026Velonix LabsNew listing: L-CARNITINE 10ml (10ml)
- 25 Sept 2026VPeptideNew listing: Neuro Drive Blend (L-Carnitine/CDP-Choline) — 20 mL (single-vial)
- 25 Sept 2026VPeptideNew listing: Neuro Drive Blend (L-Carnitine/CDP-Choline) — 20 mL (10-pack)
- 25 Sept 2026V1 PeptidesNew listing: L-CARNITINE
- 25 Sept 2026Union BiolabsNew listing: Creatine Monohydrate Gummies 5000mg with BCAAs, L-Carnitine, Taurine, B12 & B6 (5000mg)
- 25 Sept 2026UK Peptide LabNew listing: L-Carnitine
Before you choose a L-Carnitine supplier
Price per mg is only half the comparison. Check that the supplier publishes a certificate of analysis for the batch it is selling, ideally from an independent laboratory, and that the certificate confirms identity as well as purity: our guide on how to read a COA shows what to look for. A price far below the rest of the list is more often a warning than a bargain; peptide prices explained sets out why.
For what L-Carnitine is and what published studies have found, see our L-Carnitine guide. Handling questions are covered in how to store peptides, and the peptide calculator converts a vial size and water volume into concentration and syringe units. Rules on buying and importing differ by country: read are peptides legal in the US? and see all suppliers serving the US.
Checking a L-Carnitine certificate of analysis
- The certificate names a laboratory you can find independently, and ideally one with no stake in the result.
- It carries a batch or lot number that matches the product page or the vial label, and a test date.
- It confirms identity by mass spectrometry, not only purity by HPLC. Purity alone does not show the vial contains L-Carnitine.
- It includes the chromatogram and mass spectrum, not just a summary table.
- Where the laboratory offers online verification of its reports, the report number checks out.
Red flags
- No certificates at all, or certificates available only “on request”.
- The same certificate used for several products or several years of stock.
- Payment only by cryptocurrency or bank transfer, with a discount for paying that way.
- A price far below every other supplier on this page.
- No company name, address or way to contact the business other than a web form.
- Vials labelled only with a code rather than the product name and strength.
How to spot a fake peptide supplier explains each of these in more detail, and third-party peptide testing covers what independent results can and cannot prove.
Vials, capsules and pre-mixed products
Most research peptides are sold as freeze-dried (lyophilised) powder in sealed vials, which is mixed with a diluent such as bacteriostatic water before use in the lab. Some suppliers also sell pre-mixed solutions, nasal sprays or capsules under the same name. These are different products with different stability and dosing, so compare price per mg only between the same form, and check which form a listing is before comparing it with the rest of the table.
L-Carnitine in the US: questions
Where can I buy L-Carnitine in the US?
22 of the suppliers PepFinder tracks list L-Carnitine and are based in or ship to the US. The highest rated are Atomik Labz, 99PurityPeptides, Pure Lab Peptides. The list on this page is ranked by PepFinder Score, which weighs reliability, delivery, pricing, support and customer reviews, with stores based in the US placed before those shipping in from abroad; nobody pays to be included or to rank higher.
How much does L-Carnitine cost in the US?
Listed prices in USD run from US$0.01/mg to US$0.28/mg, median US$0.10/mg, across 18 listings from 10 suppliers. Compare price per mg rather than price per vial, and only within one currency; a price far below the rest is more often a warning than a bargain.
What sizes is L-Carnitine sold in?
Suppliers on this page list L-Carnitine in 60mg-ml-10ml, 200mg, 200 mg, 400mg, 400 mg, 500mg. Most research peptides are sold as freeze-dried powder in sealed vials; capsules, sprays and pre-mixed solutions are different products, so compare price per mg only between the same form.
Is it legal to buy L-Carnitine in the US?
The FDA treats research peptides sold for human use as unapproved new drugs and has said in 2026 warning letters that research-use-only labels do not change that. Our page on whether peptides are legal in the US sets out the rules with a link to every source. This is general information, not legal advice.
Can L-Carnitine be shipped to the US?
The FDA says it is illegal in most circumstances for individuals to import drugs for personal use, and shipments it considers unapproved drugs can be refused entry. Each supplier on this page shows where it is based, so you can see whether an order would cross a border.
How do I check a L-Carnitine supplier's test results?
Ask for a certificate of analysis for the batch being sold, and check that it names the laboratory, the batch number and the test date, and that it confirms identity by mass spectrometry as well as purity by HPLC. PepFinder has not yet collected certificates for L-Carnitine from these suppliers, so check each supplier's own site.
How this list is built: suppliers appear because they list L-Carnitine on their own website, read by our catalogue checks; nobody pays to be included or to move up. Ranking is by PepFinder Score. Prices, sizes and stock are as each site listed them when checked and may have changed. Provisional scores are based on incomplete research.