20% below the 500 mg middle price
KMD Analytical, 2026-08-18
9 sellers, $0.070 to $0.206 per milligram, middle price $0.087, read 2026-09-30.
Some seller links may pay this site when you buy through them. A payment never changes a seller's tier or rank, and no seller has a say in any page.
Best value with a certificate: Heartland Bio Labs, $35.0 for 500 mg, $0.070 per mg. L-Carnitine 500 mg middle price is $0.087 per mg across 9 sellers.
20% below the 500 mg middle price
KMD Analytical, 2026-08-18
20% below the 500 mg middle price
Freedom Diagnostics, 2026-07-20
3% below the 500 mg middle price
Freedom Diagnostics, BioRegen, 2026-06-20
10% above the 500 mg middle price
Janoshik Analytical, 2026-06-10
15% above the 500 mg middle price
Freedom Diagnostics, Chromate, 2025-06-08
137% above the 500 mg middle price
MZ Biolabs, 2022-06-09
12% below the 500 mg middle price
Site says it tests; the certificates sit behind a login or a bot wall and none could be read
8% below the 500 mg middle price
Site says it tests; the certificates sit behind a login or a bot wall and none could be read
3% above the 500 mg middle price
Site says it tests; the certificates sit behind a login or a bot wall and none could be read
49% above the 500 mg middle price
Site says it tests; no certificate could be found
10 of 10 listings at 500 mg, sorted grade first, then price per mg.
L-Carnitine 500 mg was first read on 2026-09-30. Middle price $0.087 per milligram across 9 sellers. A week-by-week line appears after the next finished weekly walk. One week is a snapshot, not a history.
The figure is the same ungated market median the range on this page uses: every seller found. Certificate tier still ranks the cards. The purity gate is written and off, so this is not a tested-sellers-only series.
We never charge for knowledge. No vendor has a say in what a page says. Sellers are ranked by the certificate they publish, then by price. Every size of L-Carnitine · Laboratories named