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

L-Carnitine 500 mgNatrol500 mg
L-Carnitine 500 mgFinest Nutrition500 mg
L-Carnitine 500 mgSundown500 mg
L-Carnitine 500 mgVillage Vitality500 mg
L-Carnitine 500 mgGNC500 mg
L-Carnitine 500 mgViva Vitamins500 mg
L-Carnitine 500 mgNature's Bounty500 mg
L-Carnitine 500 mgSolgar1,000 mg
L-Carnitine 500 mgBasic Vitamins500 mg
L-Carnitine 500 mgNature's Way500 mg
L-Carnitine 500 mgNatural Grocers by Vitamin Cottage500 mg
L-Carnitine 500 mgWonder Laboratories500 mg
L-Carnitine 500 mgDC500 mg
L-Carnitine 500 mgBest Naturals500 mg
L-Carnitine 500 mgPipingRock500 mg
L-Carnitine 500 mgMetabolic Maintenance500 mg
L-Carnitine 500 mgVitamin Discount Center · off the market500 mg
L-Carnitine 500 mgJarrow Formulas500 mg
L-Carnitine 500 mgNutraBio500 mg
L-Carnitine 500 mgNOW500 mg
L-Carnitine 500 mgBluebonnet500 mg
L-Carnitine 500 mgPuritan's Pride500 mg
L-Carnitine 500 mgRite Aid500 mg
L-Carnitine 500 mgLife Extension500 mg
L-Carnitine 500 mgSwanson500 mg
L-Carnitine 500 mg With Vitamin B-6Martin Avenue Pharmacy500 mg
L-Carnitine 500 TabsON Optimum Nutrition500 mg
L-Carnitine Blue LemonadeInsane Labz2,000 mg
L-Carnitine Blueberry Flavored GummiesSNAP500 mg
L-Carnitine Caps 250 mgCountry Life250 mg
L-Carnitine Caps 500 mgCountry Life500 mg
L-Carnitine Capsules 1000 mgBulkSupplements.com1,000 mg
L-Carnitine CarnipureKaged Muscle500 mg
L-Carnitine CherryGNC Pro Performance1,000 mg
L-Carnitine ComplexGNC Total Lean1,000 mg
L-Carnitine Drink Zero Sugar Lemon-LimeBody Attack200 mg
L-Carnitine Elite Burn Strawberry BlastSirenLabs2,500 mg
L-Carnitine Extra StrengthBRI Nutrition1,000 mg
L-Carnitine FormulaSuperSmart2,240 mg
L-Carnitine FumarateOL Olympian Labs · off the market1,000 mg
L-Carnitine FumarateNutri-West340 mg
L-Carnitine FumaratePure Encapsulations680 mg
L-Carnitine FumarateBulkSupplements.com500 mg
L-Carnitine Fumarate 1000 mgVitamin World · off the market1,000 mg
L-Carnitine Fumarate 1000 mgOL Olympian Labs1,000 mg
L-Carnitine Fumarate 440 mgHealth Thru Nutrition Naturally250 mg
L-Carnitine Fumarate 450 mgSwanson450 mg
L-Carnitine Fumarate 855 mgDoctor's Best855 mg
L-Carnitine Fumarate 885 mgCalifornia Gold Nutrition885 mg
L-Carnitine Fumarate With Biosint Carnitines 855 mgDoctor's Best855 mg