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L-Carnitine 500

product on market Tablet or Pill GNC Pro Performance Safety: 100/100
100/100

This product looks safe

  • No ingredients exceed tolerable upper intake levels
  • 100% of ingredients have research evidence
A Label Compliance Grade

What the Evidence Says

AI-generated · Qwen 3.6 · grounded in 1 source · methodology

L-carnitine is researched for its role in transporting fatty acids into mitochondria to support energy production. There is moderate evidence suggesting it may assist with exercise recovery and fat metabolism in certain populations. The ingredient profile maintains a high safety rating for general use.

AI-generated summary based on research evidence. Not medical advice.

Label

Product Label

Label for L-Carnitine 500
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Tablet(s)
Serving Size
Non-Nutrient/Non-Botanical
Product Type
100%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

500 mg
Market median: 500.0mg (861 products) 61 studies (A:4, B:13)

Other Ingredients

Corn Starch Dicalcium Phosphate Cellulose
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Daily

Directions: As a dietary supplement, take one tablet daily on an empty stomach.

Warnings & Precautions

Keep out of reach of children.

Formulation Notes

Pro Performance L-Carnitine 500 provides 500 mg of this important nutrient per pill.

No sugar, no artificial colors, no artificial flavors, no preservatives, sodium free, no wheat, no gluten, no soy, no dairy, yeast free.

Additional Information

Store in a cool, dry place.

500mg per serving of free form amino acid Fuels nitric oxide & muscle recovery Helps use fatty acids as energy

CODE 760411 HNG

L-Carnitine is a popular amino acid among bodybuilders, weight trainers and serious athletes because of its role in facilitating the metabolism of long chain fatty acids.

Potency verified by GNC procedure #5064. Conforms to USP <2091> for weight. Meets USP <2041> disintegration.

Metadata

Product Details

UPC / SKU0 48107 03222 7
DSLD Entry Date2016-11-21
Product TypeNon-Nutrient/Non-Botanical
FormTablet or Pill
DSLD ID66890
Data Updated2026-04-11
Research

Research Evidence

80
Research Sources
49
Avg Quality
43
Rct
14
Clinical Trial
11
Systematic Review
9
Meta Analysis
2
Regulatory Source
A Propionyl-L-carnitine for intermittent claudication
Meta Analysis The Cochrane database of systematic reviews 2021 PubMed DOI
A Carnitine supplements for people with chronic kidney disease requiring dialysis
Systematic Review The Cochrane database of systematic reviews 2022 PubMed DOI
A Acetyl-L-carnitine for patients with hepatic encephalopathy
Meta Analysis The Cochrane database of systematic reviews 2019 PubMed DOI
A Acetyl-L-carnitine for the treatment of diabetic peripheral neuropathy
Meta Analysis The Cochrane database of systematic reviews 2019 PubMed DOI
B Carnitine for fatigue in multiple sclerosis
Systematic Review The Cochrane database of systematic reviews 2012 PubMed DOI
B L-carnitine for cognitive enhancement in people without cognitive impairment
Meta Analysis The Cochrane database of systematic reviews 2017 PubMed DOI
B Carnitine for fatigue in multiple sclerosis
Systematic Review The Cochrane database of systematic reviews 2010 PubMed DOI
B Systematic Review and Meta-analysis on Effect of Carnitine, Coenzyme Q10 and Selenium on Pregnancy and Semen Parameters in Couples With Idiopathic Male Infertility
Meta Analysis Urology 2022 PubMed DOI
B Effects of Carnitine and Coenzyme Q10 on Sperm Quality and Pregnancy Rates in Men with Unexplained Infertility: A Systematic Review and Network Meta-Analysis
Systematic Review Reproductive sciences (Thousand Oaks, Calif.) 2025 PubMed DOI
B Efficacy and Effectiveness of Carnitine Supplementation for Cancer-Related Fatigue: A Systematic Literature Review and Meta-Analysis
Meta Analysis Nutrients 2017 PubMed DOI
View all evidence for Carnitine →
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This product page is for informational purposes only and does not constitute medical advice. Always consult your healthcare provider before taking any supplement.