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Non-nutrient/non-botanical · Supplement ingredient

L-Carnitine

L-Carnitine is listed on 1,240 U.S. supplement product labels in the NIH DSLD, #180 of 4,614 by label frequency.

1,240
Products
#180 of 4,614
By frequency

How common is L-Carnitine?

Number of supplement labels listing L-Carnitine vs nearby non-nutrient/non-botanical ingredients

products
Source NIH Dietary Supplement Label Database (DSLD) As of 2026

Products containing L-Carnitine

L-Carnitine 1000
GNC Total Lean
6 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 1000
GNC Total Lean
6 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 1000
GNC Total Lean
6 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 1000
GNC Total Lean
6 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 1000 mg
NOW
7 ingredients · Amino acid/Protein
Off Market
L-Carnitine 1000 mg
NOW
7 ingredients · Amino acid/Protein
Off Market
L-Carnitine 1000 mg
MET-Rx
10 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 1000 mg
NOW
6 ingredients · Amino acid/Protein
Off Market
L-Carnitine 1000 mg
MET-Rx
10 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 1000 mg
MET-Rx
10 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 1000 Natural Vanilla
MRM
12 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 1000 Natural Vanilla
MRM
12 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 1000 Tropical Berry
MRM
12 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 1000 Tropical Berry
MRM
12 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 1500 Berry
PS ProSupps
14 ingredients · Other Combinations
Off Market
L-Carnitine 1500 Vanilla
PS ProSupps
14 ingredients · Other Combinations
Off Market
L-Carnitine 2000 mg
BIOVEA
10 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 2000 mg
BIOVEA
9 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 250 As L-Carnitine Tartrate
Jarrow Formulas
5 ingredients · Amino acid/Protein
Off Market
L-Carnitine 250 mg
Douglas Laboratories
4 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 250 mg
Jarrow Formulas
4 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 250 mg
Windmill
7 ingredients · Other Combinations
Off Market
L-Carnitine 250 mg
Jarrow Formulas
4 ingredients · Amino acid/Protein
Off Market
L-Carnitine 250 mg
Douglas Laboratories
4 ingredients · Amino acid/Protein
Off Market
L-Carnitine 250 mg
Good 'N Natural
5 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 250 mg
NOW
5 ingredients · Amino acid/Protein
Off Market
L-Carnitine 250 mg
Jarrow Formulas
5 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 250 mg
Jarrow Formulas
5 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 250 mg
BIOVEA
4 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 250 mg
BIOVEA
5 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 250 mg
NOW
5 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 250 mg
Good 'N Natural
4 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 250 mg
Douglas Laboratories
5 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 250 mg
NOW
5 ingredients · Amino acid/Protein
Off Market
L-Carnitine 250 mg
Klaire Labs
5 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 250 mg
Windmill Natural Vitamins
7 ingredients · Other Combinations
Off Market
L-Carnitine 500
MaritzMayer Laboratories
6 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 500
PL Progressive Laboratories
5 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 500 As L-Carnitine Tartrate
Jarrow Formulas
5 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 500 As L-Carnitine Tartrate
Jarrow Formulas
5 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 500 As L-Carnitine Tartrate
Jarrow Formulas
5 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 500 mg
Vitamin World
6 ingredients · Amino acid/Protein
Off Market
L-Carnitine 500 mg
GNC
2 ingredients · Amino acid/Protein
Off Market
L-Carnitine 500 mg
GNC
2 ingredients · Amino acid/Protein
Off Market
L-Carnitine 500 mg
GNC
2 ingredients · Amino acid/Protein
Off Market
L-Carnitine 500 mg
Viva Vitamins
8 ingredients · Other Combinations
Off Market
L-Carnitine 500 mg
NOW
5 ingredients · Non-Nutrient/Non-Botanical
Off Market
L-Carnitine 500 mg
PhysioLogics
9 ingredients · Amino acid/Protein
Off Market
L-Carnitine 500 mg
Nature's Bounty
7 ingredients · Amino acid/Protein
Off Market
L-Carnitine 500 mg
Sundown Naturals
9 ingredients · Amino acid/Protein
Off Market

Nearby Ingredients in Non-nutrient/non-botanical

Other ingredients in the Non-nutrient/non-botanical category cataloged in the NIH DSLD. Useful for comparing how common different nutrients are across the US supplement market.

Compare L-Carnitine vs Magnesium →

Nationwide ingredients with similar DSLD presence

Two peer sets for L-Carnitine: closest on total DSLD label listings (1,240 here) and closest on distinct brands that list it (357 here). Peers exclude the same DSLD category, and rows stay link-disjoint so each axis is a distinct neighborhood.

Similar label frequency

Nearest other ingredients by distinct DSLD product labels (floored at ≥50), outside this category.

Similar brand breadth

Nearest other ingredients by distinct brands listing them (floored at ≥100 brands), distinct from the label-frequency row.

Frequently asked about L-Carnitine

How many supplement products contain L-Carnitine?
1,240 supplement product labels in the NIH DSLD currently lists L-Carnitine as an ingredient. By label frequency it ranks #180 of 4,614 among ingredients PlainVitamins ranks (same sort as /rankings/most-common-ingredients). Browse them below.

Source: NIH Office of Dietary Supplements, Dietary Supplement Label Database (DSLD). Regulatory reference: Source: Dietary Supplement Health and Education Act (DSHEA), 1994, 21 U.S.C. § 321(ff).

Disclaimer, Not Medical Advice: Information on this page is based on manufacturer-declared label data and is provided for educational and reference purposes only. It does not constitute medical, nutritional, or health advice. Consult a licensed healthcare provider before starting, stopping, or combining any supplement, especially if you are pregnant, nursing, take prescription medication, or have a medical condition.

Every figure on PlainVitamins is rendered directly from the NIH Dietary Supplement Label Database (DSLD), no number is typed in by an editor. Ingredient figures are computed directly from the NIH DSLD, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.