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L-Carnitine 1000

product on market Other (e.g. tea bag) GNC Total Lean 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 involved in fatty acid transport and energy production within cells. Research provides moderate evidence that it may support fat metabolism and exercise recovery in specific 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 1000
Open Full PDF View on NIH DSLD →
Details

Label Data

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

Supplement Facts — Evidence Check

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

Other Ingredients

Cellulose Stearic Acid Magnesium Stearate Silicon Dioxide Vegetarian Coating
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Directions: As a dietary supplement, take the contents of one pak daily.

Warnings & Precautions

Warning: Consult your physician prior to using this product if you are pregnant, nursing, taking medication, or have a medical condition.

Discontinue use two weeks prior to surgery.

Keep out of reach of children.

Formulation Notes

L-Carnitine 1000 The most clinically studied form of L-Carnitine available - shown to fuel fat metabolism and reduce oxidative stress post-exercise.

Fuels fat metabolism with L-Carnitine 1000 & CLA

No wheat, gluten free, no soy, no dairy, yeast free.

Additional Information

Advanced support as you strive to burn & define. Get a complete solution, including premium, clinically researched ingredients in just the right doses - all in a convenient pack.

Embrace doing all the right things to achieve a more defined looked - like following the enclosed meal and exercise plan. This product provides dietary supplements to support calorie burning, fat metabolism and your regimen.

Participants exercised on a treadmill on two occasions. On one occasion they took this blend before exercise and on the second, they took the placebo. The amount of calories burned during the first hour post-exercise was measured and participants burned up to 60% more calories while on this blend compared to when they took the placebo.

New!

Scientifically formulated nutrition & weight management support system

Clinically researched

CODE 210811 CSG

Each pak contains: L-Carnitine 1000

Conforms to USP <2091> for weight. Meets USP <2040> disintegration.

Actual size

Gf Gluten Free

Store in a cool, dry place.

Our quality commitment to you Since 1935, our mission as the industry leader has been to provide you with the highest-quality nutritional supplements. We continue to stand behind this mission. If you're not 100% satisfied with your purchase, return the unused portion of the product with your receipt within 30 days and we'll either refund your money or find you a replacement product that is right for you.

Metadata

Product Details

DSLD Entry Date2017-10-21
Product TypeNon-Nutrient/Non-Botanical
FormOther (e.g. tea bag)
DSLD ID79230
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
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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.