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L-Carnitine 1000 mg

product on market Other (e.g. tea bag) MET-Rx 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. Evidence for its effectiveness in enhancing athletic performance or weight loss is generally limited and inconsistent across studies. The ingredient is typically well-tolerated when used as directed.

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

Label

Product Label

Label for L-Carnitine 1000 mg
Open Full PDF View on NIH DSLD →
Details

Label Data

2 Caplet(s)
Serving Size
15
Servings
Non-Nutrient/Non-Botanical
Product Type
100%
Evidence Coverage
Ingredients

Supplement Facts — Evidence Check

1000 mg
Market median: 500.0mg (861 products) 61 studies (A:4, B:13)

Other Ingredients

Cellulose Stearic Acid Polyvinyl Alcohol Silica Croscarmellose Polyethylene Glycol Magnesium Silicate Vegetable Magnesium Stearate Titanium Dioxide color
Claims

Label Claims — Verification

Unverified All Other
Unverified Structure/Function
Info

Product Information

Directions for Use

PRE & POST WORKOUT FOR BEST RESULTS, TAKE TWO (2) CAPLETS TWICE DAILY WITH MEALS.

Directions: For adults, take two (2) caplets twice daily, preferably with meals.

Warnings & Precautions

As a reminder, discuss the supplements and medications you take with your health care providers. WARNING: If you are pregnant, nursing, taking any medications or have any medical condition, consult your doctor before use.

Discontinue use and consult your doctor if any adverse reactions occur.

Not intended for use by persons under the age of 18. KEEP OUT OF REACH OF CHILDREN.

TAMPER RESISTANT: DO NOT USE IF SEAL UNDER CAP IS BROKEN OR MISSING.

Formulation Notes

MET-Rx L-CARNITINE IS ONE OF THE MOST VERSATILE SUPPLEMENTS AVAILABLE – PERFECT FOR RUNNERS, WEIGHTLIFTERS, ATHLETES AND ANYONE TRYING TO GET INTO BETTER SHAPE.* CARNITINE HELPS THE BODY CONVERT FOOD TO ENERGY – PROVIDING SUPPORT FOR ENDURANCE EXERCISE (AEROBIC) AND DURING RECOVERY FROM HIGH INTENSITY ACTIVITIES SUCH AS WEIGHTLIFTING AND SPRINTING (ANAEROBIC).*

CARNITINE HELPS THE BODY CONVERT FOOD TO ENERGY – PROVIDING SUPPORT FOR ENDURANCE EXERCISE (AEROBIC) AND DURING RECOVERY FROM HIGH INTENSITY ACTIVITIES SUCH AS WEIGHTLIFTING AND SPRINTING (ANAEROBIC).*

L-CARNITINE 1OOO mg PER SERVING

Additional Information

HARD TRAINING CAN TAKE A TOLL ON YOUR BODY – DECREASING RECOVERY AND HALTING YOUR PROGRESS IN THE GYM DEAD IN ITS TRACKS.

SUPPLEMENTING WITH OUR FORMULA HELPS TO MAXIMIZE MUSCLE CARNITINE CONCENTRATIONS AT THE GYM OR BEFORE ATHLETIC COMPETITION.

STORE AT ROOM TEMPERATURE AND AVOID EXCESSIVE HEAT.

EXERCISE RECOVERY

HELPS THE BODY CONVERT FOOD TO ENERGY PROMOTES RECOVERY FROM HIGH INTENSITY EXERCISE SUPPORTS ENDURANCE EXERCISE

FJ 52974 01A B1682

Metadata

Product Details

UPC / SKU7 86560 52974 7
DSLD Entry Date2016-07-25
Product TypeNon-Nutrient/Non-Botanical
FormOther (e.g. tea bag)
BrandMET-Rx
DSLD ID63082
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.