PlainVitamins

non-nutrient/non-botanical

L-Carnitine supplements

Half of the 1,338 L-carnitine supplements in the NIH label database that print an amount list 500 mg or less per serving; the middle half list 110.5 mg to 1,000 mg (DSLD version 9.4.0, January 2026). The 198 products whose only supplement ingredient is L-carnitine list a median of 500 mg.

Products listing it
1,9221,338 print an amount; 581 list it inside a blend without an amount
Median per serving
500 mgmiddle half 110.5 mg to 1,000 mg

How much L-carnitine do supplements contain?

The median product lists 500 mg per serving. One in ten lists 25 mg or less, one in ten 2,000 mg or more. The amount printed most often is 500 mg (260 products).

Products by amount of L-carnitine per serving

1,338 products, log scale; extreme 0.2% at each end left out of the drawing.

L-Carnitine: products by amount per serving1 mg3 mg10 mg100 mg1,000 mg
L-Carnitine: products by amount per serving1 mg3 mg10 mg30 mg100 mg1,000 mg
L-Carnitine: products by amount per serving1 mg3 mg10 mg30 mg100 mg300 mg1,000 mg
L-Carnitine: products by amount per serving1 mg3 mg10 mg30 mg100 mg300 mg1,000 mg
L-Carnitine: products by amount per serving1 mg3 mg10 mg30 mg100 mg300 mg1,000 mg
The amounts printed most often
Amount per servingProductsFor example
500 mg260 Liquid L-Carnitine 500 mg (Vitamin World); Active Milk Chocolate (GNC Women's Ultra Mega); Active Vanilla Creme (GNC Women's Ultra Mega)
1,000 mg188 L-Carnitine Cherry (GNC Pro Performance); L-Carnitine 1000 Tropical Berry Flavor (MRM); Liquid Carnitine 1000 Natural Vanilla Flavor (Iron-Tek)
250 mg99 Q-Sorb Co Q-10 & L-Carnitine (Vitamin World); Carnisol Energy (ENP); Torch Pre-Burn Pre-Workout Drink Wildberry (Market America)
2,000 mg66 L-Carnitine 2,000 mg Acai Berry (NOW Shots); Ribo-CarniClear Supersaturated Ribose/Carnitine Liquid (Designs for Health); Best Carnitine Energy (Doctor's Best)
100 mg62 Amino Supreme (Bricker Labs); Choline Cocktail (Twinlab); Performance Edge (Bronson)
3,000 mg60 Triple Strength L- Carnitine Liquid 3000 mg Citrus Flavor (NOW Sports); Re-Pump Fruit Punch (GNC Beyond Raw); Re-Pump Watermelon (GNC Beyond Raw)
1,500 mg57 Triple Strength L-Carnitine 1,500 mg Natural Lemon Flavor (Precision Engineered); Triple Strength L-Carnitine 1500 Natural Lemon Flavor (Body Fortress); PED Performance Energy Drink Raspberry Lemonade (Scientific Nutrition For Advanced Conditioning SNAC)
50 mg55 TheraBetic Multi-Vitamin (Windmill); Cholo-SYN (Douglas Laboratories); Metapan (Marco Pharma Int'l)
10 mg46 MaxAmino 1200 (Vitabase); Time-Released Mega Men Diabetic Support (GNC Mega Men); Spark Energy Drink Mix Watermelon (Advocare)
25 mg44 Thermo Burst Hardcore (GNC Pro Performance); Liquid Amino Complex Natural Orange Flavor (Iron-Tek); Amplified Muscle Igniter 4X (GNC Pro Performance AMP)

Source: Supplement Facts rows of every product's current label, NIH ODS Dietary Supplement Label Database version 9.4.0; amounts in one measure (weight).

Which products list the most L-carnitine?

On-market products, per serving, with a plausible amount: the rule leaves out likely entry slips, such as an amount far beyond every other label with no %DV or strength on the label to back it (each product page still shows its own amount, marked).

Have the amounts changed over the years?

Products whose current label entered DSLD in 2011 list a median of 500 mg; those entered in 2025, 500 mg.

Median L-carnitine per serving by the year the label entered DSLD (years with 20+ products)
YearProductsMedian per serving
201128500 mg
201270500 mg
201399250 mg
201489333 mg
201597500 mg
2016911,000 mg
201764500 mg
201883500 mg
201980500 mg
2020120500 mg
202176500 mg
2022102500 mg
2023100500 mg
2024111500 mg
2025128500 mg

Source: DSLD label entry dates and amounts, current labels.

In which products and brands?

Products listing L-carnitine by DSLD product type

L-Carnitine by product typeOther Combinations1,056Non-Nutrient/Non-Botanical228Amino acid/Protein45Botanical with Nutrients8Fiber and Other Nutrients1
L-Carnitine by product typeOther Combinations1,056Non-Nutrient/Non-Botanical228Amino acid/Protein45Botanical with Nutrients8Fiber and Other Nutrients1
L-Carnitine by product typeOther Combinations1,056Non-Nutrient/Non-Botanical228Amino acid/Protein45Botanical with Nutrients8Fiber and Other Nutrients1
L-Carnitine by product typeOther Combinations1,056Non-Nutrient/Non-Botanical228Amino acid/Protein45Botanical with Nutrients8Fiber and Other Nutrients1
L-Carnitine by product typeOther Combinations1,056Non-Nutrient/Non-Botanical228Amino acid/Protein45Botanical with Nutrients8Fiber and Other Nutrients1

Brands listing it most: GNC Pro Performance AMP (37), AdvoCare (30), PS ProSupps (29), GNC Total Lean (21), Douglas Laboratories (19), BodyTech (19), ALLMAX (19), Body Attack Sports Nutrition (16), NOW Sports (14), Bricker Labs (13).

Every product listing L-carnitine

1,922 products, A to Z by name (page 23 of 39), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

Where next?