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L-Carnitine 400 mg

product on market Capsule Signature Supplements 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 L-tartrate is used to support fatty acid metabolism and energy production. Research providing evidence for its efficacy in enhancing athletic performance or recovery is generally considered limited. This ingredient profile maintains a high safety rating for typical use.

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

Label

Product Label

Label for L-Carnitine 400 mg
Open Full PDF View on NIH DSLD →
Details

Label Data

1 Capsule(s)
Serving Size
50
Servings
Non-Nutrient/Non-Botanical
Product Type
100%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

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

Other Ingredients

Cellulose Diatomaceous Earth
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

Directions: For adults, take one (1) to two (2) capsules daily, preferably with a meal.

Warnings & Precautions

Warning: Pregnant or lactating women should consult a doctor before using any product. Consult doctor before use if you have, or have had, kidney disease or if you are taking any medications or remedies such as those to treat high blood pressure, heart medications, muscle relaxants or diuretics.

Discontinue use and consult your doctor if any adverse reactions occur, such as gastrointestinal discomfort or low blood pressure.

Not intended for use by persons under the age of 18

Formulation Notes

No: chemical fillers or binders, artificial coloring, artificial flavor, preservatives, yeast, corn, milk or milk derivatives, lactose, salt, sodium, soy, sugar, gluten, starch or wheat.

From a GMP facility

Supports fat metabolism & heart function

Additional Information

Store in a dry place and avoid excessive heat.

Metadata

Product Details

DSLD Entry Date2025-08-22
Product TypeNon-Nutrient/Non-Botanical
FormCapsule
DSLD ID338804
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.