L-Carnitine 500 mg vial
- Ion Peptides$40Listed price · deal not verifiedCOA tested Jul 18, 2026
- EZ Peptides$48Listed price · deal not verifiedCOA tested Jun 12, 2026
L-Carnitine is commonly sold or discussed for general wellness, nutrition, antioxidant, or energy goals.
Also known as l carnitine · l-carnitine
Current picks · Nov 14, 2026
Up to three of the lowest effective prices per exact product among vendors that passed the trust floor, were in stock and checked within 72 hours, and have a COA on file for that product and strength tested within 12 months. Affiliate relationships never affect picks or their order.
Same format. Same amount.
1 of 4 exact products have at least one pick. Vendor counts reflect the current price observations. Testing records for every vendor and strength: L-Carnitine COAs →
What it is
(R)-carnitine is the (R)-enantiomer of carnitine. It has a role as a water-soluble vitamin (role), an antilipemic drug, a nutraceutical, a nootropic agent and a Saccharomyces cerevisiae metabolite. It is a conjugate base of a (R)-carnitinium. It is an enantiomer of a (S)-carnitine. The listed molecular formula is C7H15NO3. PepGrades separately preserves the catalog category because a chemical identity record does not establish a use, outcome, or product quality.
This label describes the available research record, not whether the compound is safe or effective for an individual.
Research context
5 registered studies were found under this name in the current review. Each study still needs to be checked for the exact compound identity, population, endpoints, and results.
Search indexed research for this compound ↗Market context
L-Carnitine is commonly sold or discussed for general wellness, nutrition, antioxidant, or energy goals. That describes market demand, not proof that the compound is safe or effective.
Market demand and online discussion do not establish product quality, safety, or effectiveness.Vendor directory
Grades describe the vendor record overall, not a test of every product. Lowest prices are effective single-package prices across formats; open a comparison for the exact product.
| Vendor | Grade | Offers | In stock | Lowest effective package |
|---|---|---|---|---|
| EZ Peptides | Grade A- | 1 | 1 | $48 · 500 mg vialObserved Nov 14, 2026 |
| Simple Peptide | Grade B | 1 | 1 | $60 · 5000 mg vialEarlier observation Sep 27, 2026 |
| Coffee and Peppers | Grade B | 1 | 0 | $69.99 · 600 mg vialEarlier observation Oct 4, 2026 · out of stock |
| Ion Peptides | Grade B | 1 | 1 | $40 · 500 mg vialObserved Nov 14, 2026 |
| AIO Peptides | Not graded | 1 | 1 | $51.20 · 5000 mg vialObserved Nov 14, 2026 |
19 tracked vendors list L-Carnitine without a current offer: Peptide Plugs (Grade A-), Orbitrex Peptides (Grade A-), Bulk Peptide Supply (Grade B+), Ameano Peptides (Grade B+), Panda Peptides (Grade B+), Oasis Peptides (Grade B+), RIVN Peptides (Grade B+), SaiyanMed (Grade B+), Ignite Peptides (Grade B), Biolongevity Labs (Grade B), Chameleon Peptides (Grade B), Eternal Peptides (Grade B), Nationwide Peptides (Grade B+), Vital Core Research (Grade B), NextechLabs (Grade C), Swiss Chems (Grade C), Atomik Labz (Not graded), Northline Labs (Not graded), Nova Life Peptides (Not graded).
Sources and review
Last editorial review: Aug 30, 2026. Sources support the compound guide only and do not affect vendor grades.