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.

The amounts printed most often
Amount per serving	Products	For example
500 mg	260	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 mg	188	L-Carnitine Cherry (GNC Pro Performance); L-Carnitine 1000 Tropical Berry Flavor (MRM); Liquid Carnitine 1000 Natural Vanilla Flavor (Iron-Tek)
250 mg	99	Q-Sorb Co Q-10 & L-Carnitine (Vitamin World); Carnisol Energy (ENP); Torch Pre-Burn Pre-Workout Drink Wildberry (Market America)
2,000 mg	66	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 mg	62	Amino Supreme (Bricker Labs); Choline Cocktail (Twinlab); Performance Edge (Bronson)
3,000 mg	60	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 mg	57	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 mg	55	TheraBetic Multi-Vitamin (Windmill); Cholo-SYN (Douglas Laboratories); Metapan (Marco Pharma Int'l)
10 mg	46	MaxAmino 1200 (Vitabase); Time-Released Mega Men Diabetic Support (GNC Mega Men); Spark Energy Drink Mix Watermelon (Advocare)
25 mg	44	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).

Liquid L-Carnitine 3150 Mandarin OrangeRich Piana 5% Nutrition3,150 mg
Liquid L-Carnitine 3150 WatermelonRich Piana 5% Nutrition3,150 mg
Triple Strength L- Carnitine Liquid 3000 mg Citrus FlavorNOW Sports3,000 mg
Re-Pump Fruit PunchGNC Beyond Raw3,000 mg
Re-Pump WatermelonGNC Beyond Raw3,000 mg
Raspberry Flavor L-CarnitineThe Vitamin Shoppe Next Step3,000 mg
100% Platinum Carnitine Tropical CitrusMuscleTech Essential Series3,000 mg
L-Carnitine 3000 Blue Raspberry1 Up Nutrition3,000 mg

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)
Year	Products	Median per serving
2011	28	500 mg
2012	70	500 mg
2013	99	250 mg
2014	89	333 mg
2015	97	500 mg
2016	91	1,000 mg
2017	64	500 mg
2018	83	500 mg
2019	80	500 mg
2020	120	500 mg
2021	76	500 mg
2022	102	500 mg
2023	100	500 mg
2024	111	500 mg
2025	128	500 mg

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

In which products and brands?

Products listing L-carnitine by DSLD product type

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 18 of 39), each with the amount its label prints; an amount far outside what other labels print is marked as a possible slip.

L-Carnilit Cmplx Lemon LimeFaktrition3,000 mg
L-CarnitineGNC Pro Performance · off the market500 mg
L-CarnitineOL Olympian Labs · off the market1,000 mg
L-CarnitineDouglas Laboratories500 mg
L-CarnitineBioGenesis Nutraceuticals · off the market750 mg
L-CarnitineMetabolic Maintenance500 mg
L-CarnitineThorne Research · off the market330 mg
L-CarnitineThorne FX · off the market330 mg
L-CarnitineKaruna500 mg
L-CarnitineRSP500 mg
L-CarnitineEXOS Performance Nutrition · off the market330 mg
L-CarnitineAllergy Research Group250 mg
L-CarnitineGNC Women's Ultra Mega500 mg
L-CarnitineHard Rhino2,000 mg
L-CarnitineMyTrition500 mg
L-CarnitineOrtho Molecular Products500 mg
L-CarnitineSpring Valley500 mg
L-CarnitineKaged Muscle500 mg
L-CarnitineArazo Nutrition1,000 mg
L-CarnitineMental Refreshment1,000 mg
L-CarnitineNature's Sunshine885 mg
L-CarnitineHerbadiet1,000 mg
L-CarnitineBRI Nutrition · off the market1,000 mg
L-CarnitineMoss Nutrition500 mg
L-CarnitineProlab · off the market500 mg
L-CarnitineCardiovascular Research250 mg
L-CarnitineTotally Products1,000 mg
L-CarnitineMetagenics500 mg
L-CarnitinePure Encapsulations680 mg
L-CarnitineGNC Women's500 mg
L-CarnitineThorne330 mg
L-CarnitineThe Asylum Cabinet by Insane Labz750 mg
L-CarnitineBulkSupplements.com1,000 mg
L-CarnitineNOW635 mg
L-CarnitineEarthborn Elements900 mg
L-CarnitineMDLogic Sport500 mg
L-Carnitine + TartrateALLMAX1,470 mg
L-Carnitine 1,000 mgH-E-B1,000 mg
L-Carnitine 1,000 mg Natural VanillaMRM1,000 mg
L-Carnitine 10 1100 mg Raspberry FlavorBricker Labs · off the market1,100 mg
L-Carnitine 10 1100 mg Vanilla Tart FlavorBricker Labs1,100 mg
L-Carnitine 10 3000 mg Raspberry FlavorBricker Labs · off the market300 mg
L-Carnitine 1000Vitamin World · off the market1,000 mg
L-Carnitine 1000GNC Total Lean1,000 mg
L-Carnitine 1000 mgMET-Rx1,000 mg
L-Carnitine 1000 mgArazo Nutrition · off the market1,000 mg
L-Carnitine 1000 mgGNC Total Lean1,000 mg
L-Carnitine 1000 mgAllergy Research Group1,000 mg
L-Carnitine 1000 mgNutriCology1,000 mg
L-Carnitine 1000 mgAmazing Muscle1,000 mg